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USGS Surface-Water Daily Data for the Nation

! This page is undergoing modernization and will be decommissioned in the future.
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 Available parameters -- select sites that have data for the following parameters:
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Water Level/Flow Parameters
  Reservoir storage, acre-ft
  Stream velocity, ft/s
  Flow rate of well, gal/d
  Flow rate of well, gal/min
  Flow rate, instantaneous, gal/min
  Streamflow, ft³/s
  Discharge, instantaneous, ft³/s
  Elevation of reservoir water surface above datum, ft
  Mean depth of stream, ft
  Gage height, ft
  Tide Stage, code
  Stream stage, m
  Flow, gallons per batch
  Gage height, above datum, m
  Discharge, m³/s
  Discharge, instantaneous, m³/s
  Depth to water level, below land surface datum (LSD), m
  Elevation above NGVD 1929, m
  Streamflow, gal/min
  Flow rate, instantaneous, Mgal/d
  Flow total during composite period, thousands of gallons
  Water level, depth below measuring point, ft
  Water level elevation above NGVD 1929, corrected for barometric pressure, ft
  Water level elevation above NGVD 1929, inclined (non-vertical) well, ft
  Groundwater level above NGVD 1929, ft
  Groundwater level above NAVD 1988, ft
  Groundwater level above NGVD 1929, m
  Groundwater level above NAVD 1988, m
  Lake or reservoir water surface elevation above NGVD 1929, ft
  Lake or reservoir water surface elevation above NAVD 1988, ft
  Lake or reservoir water surface elevation above NGVD 1929, m
  Lake or reservoir water surface elevation above NAVD 1988, m
  Lake or reservoir stage, above datum, m
  Estuary or ocean water surface elevation above NGVD 1929, ft
  Estuary or ocean water surface elevation above NAVD 1988, ft
  Estuary or ocean water surface elevation above NGVD 1929, m
  Estuary or ocean water surface elevation above NAVD 1988, m
  Tide stage, above datum, ft
  Tide stage, above datum, m
  Stream water level elevation above NGVD 1929, in ft
  Stream water level elevation above NGVD 1929, in m
  Stream water level elevation above NAVD 1988, in ft
  Stream water level elevation above NAVD 1988, in m
  Wave height, nearshore, ft
  Direction of stream flow, magnetic azimuth, degrees
  Water velocity reading from field sensor, knots
  Stage, tidally filtered, above datum, ft
  Depth to water level, ft below land surface
  Elevation above NGVD 1929, ft
  Reservoir storage, cubic feet per second-days
  Reservoir storage, Mgal
  Reservoir storage, million cubic feet
  Pond storage, gal
  Reservoir storage, thousand acre feet
  Withdrawal of groundwater, million gallons per month
  Reservoir storage, total pool, percent of capacity
  Reservoir storage, live pool, percent of capacity
  Hydrostatic head difference, groundwater minus surface water, mm
  Streamflow, tidally filtered, ft³/s
  Discharge, tidally filtered, m³/s
  Discharge, tidally filtered, gal/min
  Stream velocity, m/s
  Groundwater level relative to Mean Sea Level (LMSL), ft
  Stream velocity, tidally filtered, ft/s
  Stream velocity, tidally filtered, m/s
  Stage, tidally filtered, above datum, ft
  Stage, tidally filtered, above datum, m
  Groundwater discharge, cm/day
  Water depth, water surface to bottom, m
  Velocity at point in stream, m/s
  Lake or reservoir elevation above International Great Lakes Datum (IGLD), ft
  Lake or reservoir elevation above International Great Lakes Datum (IGLD), m
  Groundwater level above American Samoa Datum of 1962 (retired in 2001), ft
  Groundwater level above American Samoa Vertical Datum of 2002, ft
  Groundwater level above Guam Vertical Datum of 1963 (retired in 2003), ft
  Groundwater level above Guam Vertical Datum of 2004, ft
  Groundwater level above Local Hawaiian Datum, ft
  Groundwater level above Northern Marianas Vertical Datum of 2003, ft
  Groundwater level above Puerto Rico Datum of 2002, ft
  Discharge, ft³/day
  Physical Marsh mat (floating vegetation) elevation above NAVD 1988, ft
  Physical Water level above marsh, ft
  Mean Stream velocity from field sensor, ft/s
  Mean Stream velocity, ft/s
  Fall, as determined from fall rating and base gage-height, slope-Q computation, ft
  Ratio of fall measured to fall rated, Slope-Q computation
  Lake or reservoir elevation above New York State Barge Canal Datum (NYBCD), ft
  Lake or reservoir elevation above New York State Barge Canal Datum (NYBCD), m
  Discharge, cumulative, acre-feet
  Scour hole bottom elevation above NGVD 1929, ft
  Lake or reservoir elevation above United States Bureau of Reclamation Klamath Basin (USBRKB) Datum, ft
  Tidal water level, NOS-averaged, distance from measuring point to water surface, ft
  Datum offset, elevation of water leveling point in reference to established datum, ft
  Tidal elevation, NOS-averaged, NAVD88, ft
  Water level elevation above NAVD 1988, corrected for barometric pressure, ft
  Water level elevation above gage datum, corrected for barometric pressure, ft
  Mean water velocity for discharge computation, mph
  Stream velocity, mph
  Surface velocity at point in stream, ft/s
  Surface velocity at point in stream, m/s
  Flow total during composite period, ft³
  Runoff total during flow event, ft³
  Pavement surface temperature, °C
  Streambed elevation at measurement point, NAVD88, ft
  Reach-averaged stream width derived from satellite imagery, m
  Reach water-surface slope derived from satellite altimetry data
  Reach averaged water-surface elevation derived from satellite altimetry data, m
  Reach-averaged stream width derived from satellite imagery, ft
  Reach averaged water-surface elevation derived from satellite altimetry data, ft
  Atmospheric water vapor pressure, calculated, millibars
  Flow total during composite period, gal
  Groundwater level above Virgin Islands Vertical Datum of 2009, ft
  Groundwater level above Virgin Islands Vertical Datum of 2009, m
  Estuary or ocean water surface elevation above Virgin Islands Vertical Datum of 2009, VIVD09, ft
  Estuary or ocean water surface elevation above Virgin Islands Vertical Datum of 2009, VIVD09, m
  Light non-aqueous phase liquid (LNAPL) level, below measuring point, uncorrected, ft
  Light non-aqueous phase liquid (LNAPL) level, NAVD88, uncorrected, ft
  Light non-aqueous phase liquid (LNAPL) thickness, ft
  Dense non-aqueous phase liquid (DNAPL) level, below measuring point, uncorrected, ft
  Dense non-aqueous phase liquid (DNAPL) level, NAVD88, uncorrected, ft
  Dense non-aqueous phase liquid (DNAPL) thickness, ft
  Density, water, in situ, g/mL
  Evapotranspiration rate, mm/hr
  Evapotranspiration total, mm
  Runoff total during flow event, mL
  Stream water level elevation above local mean sea level (LMSL), ft
  Stream water level elevation above local mean sea level (LMSL), m
  Stream water level elevation above Guam Vertical Datum of 2004, ft
  Stream water level elevation above Guam Vertical Datum of 2004, m
  Stream water level elevation, above Puerto Rico Datum of 2002, ft
  Stream water level elevation, above Puerto Rico Datum of 2002, m
  Stream water level elevation above Virgin Islands Vertical Datum of 2009, ft
  Stream water level elevation above Virgin Islands Vertical Datum of 2009, m
  Tidal stage elevation, NAVD88, ft
  Tidal stage elevation, NAVD88, m
  Tidal stage elevation, above Puerto Rico Datum of 2002, ft
  Tidal stage elevation, above Puerto Rico Datum of 2002, m
  Tidal stage elevation above Virgin Islands Vertical Datum of 2009, ft
  Tidal stage elevation above Virgin Islands Vertical Datum of 2009, m
  Lake or reservoir elevation above local mean sea level (LMSL), ft
  Lake or reservoir elevation above local mean sea level (LMSL), m
  Lake or reservoir elevation above Guam Vertical Datum of 2004, ft
  Lake or reservoir elevation above Guam Vertical Datum of 2004, m
  Lake or reservoir elevation, above Puerto Rico Datum of 2002, ft
  Lake or reservoir elevation, above Puerto Rico Datum of 2002, m
  Lake or reservoir elevation above Virgin Islands Vertical Datum of 2009, ft
  Lake or reservoir elevation above Virgin Islands Vertical Datum of 2009, m
  Estuary or ocean water surface elevation above local mean sea level (LMSL), ft
  Estuary or ocean water surface elevation above local mean sea level (LMSL), m
  Estuary or ocean water surface elevation above Guam Vertical Datum of 2004, ft
  Estuary or ocean water surface elevation above Guam Vertical Datum of 2004, m
  Estuary or ocean water surface elevation, above Puerto Rico Datum of 2002, ft
  Estuary or ocean water surface elevation, above Puerto Rico Datum of 2002, m
  Groundwater level above local mean sea level (LMSL), m
  Groundwater level above Guam Vertical Datum of 2004, m
  Groundwater level above Puerto Rico Datum of 2002, m
  Effective depth of measurement, below sensor, centimeters, cm
  Discharge, cumulative, cubic decameters, dam³
  Discharge, cumulative, cubic feet, ft³
  Flow rate, L/s
  Streamflow, daily, ac-ft
  Withdrawal of groundwater, mgd
  Discharge, mean, composite sample, cubic feet per second, ft³/s
  Velocity at point in stream, ft/s
  Pump rate, gpm
  Water surface elevation difference between two locations,ft
  Gage height, above datum, m
  Difference between observed and predicted water surface elevation, ft
  Depth of sensor below water surface, not corrected for barometric pressure variations, ft
  Depth of sensor below water surface, not corrected for barometric pressure variations, m
  Groundwater flow direction, true north azimuth, degrees
  Groundwater flow velocity, ft/day
  Elevation above NGVD 1929, m
  Streamflow, m³/s
Water Quality Parameters
  Temperature, water, °C
  Temperature, water, °F
  Total partial pressure of dissolved gases, water, unfiltered, mmHg
  Total partial pressure of dissolved gases, water, unfiltered, percent of saturation
  Turbidity, water, unfiltered, Jackson Turbidity Units
  Turbidity, water, unfiltered, Hellige turbidimeter, mg/L as silicon dioxide
  Turbidity, water, unfiltered, NTU
  Color, water, filtered, platinum cobalt units
  Oxidation reduction potential, mV
  Specific conductance, water, unfiltered, field, µS/cm at 25 °C
  Specific conductance, water, unfiltered, µS/cm at 25 °C
  Salinity, water, unfiltered, mg/mL at 25 °C
  Dissolved oxygen, water, unfiltered, mg/L
  Dissolved oxygen, water, unfiltered, %saturation
  Biochemical oxygen demand, water, unfiltered, 5 days at 20 °C, mg/L
  pH, water, unfiltered, field, standard units
  Specific conductance, non-temperature corrected, water, unfiltered, µS/cm
  Carbon dioxide, water, unfiltered, mg/L
  pH, water, filtered, laboratory, standard units
  Acid neutralizing capacity, water, unfiltered, fixed endpoint (pH 4.5) titration, field, mg/L as calcium carbonate
  Bicarbonate, water, unfiltered, fixed endpoint (pH 4.5) titration, field, mg/L
  Salinity, water, unfiltered, parts per thousand
  Dissolved solids dried at 105 degrees Celsius, water, filtered, mg/L
  Residue, total nonfilterable, mg/L
  Total nitrogen, water, unfiltered, mg/L
  Ammonia, water, filtered, mg/L as N
  Ammonia (NH3 + NH4+), water, unfiltered, mg/L as N
  Nitrite, water, filtered, mg/L as N
  Nitrate, water, filtered, mg/L as N
  Ammonia (un-ionized), water, unfiltered, calculated, mg/L as N
  Nitrate, water, unfiltered, mg/L as N
  Ammonia plus organic nitrogen, water, unfiltered, mg/L as N
  Nitrite plus nitrate, water, unfiltered, mg/L as N
  Nitrite plus nitrate, water, filtered, mg/L as N
  Phosphate, water, unfiltered, mg/L
  Phosphorus, water, unfiltered, mg/L as phosphorus
  Phosphorus, water, filtered, mg/L as phosphorus
  Orthophosphate, water, filtered, mg/L as phosphorus
  Organic carbon, water, unfiltered, mg/L
  Organic carbon, water, filtered, mg/L
  Organic carbon, suspended sediment, total, mg/L
  Hardness, water, mg/L as calcium carbonate
  Calcium, water, filtered, mg/L
  Magnesium, water, filtered, mg/L
  Sodium, water, filtered, mg/L
  Sodium adsorption ratio, water, number
  Chloride, water, filtered, mg/L
  Sulfate, water, filtered, mg/L
  Fluoride, water, filtered, mg/L
  Fluoride, water, unfiltered, mg/L
  Silica, water, filtered, mg/L
  Arsenic, water, filtered, µg/L
  Cadmium, water, filtered, µg/L
  Cadmium, water, unfiltered, µg/L
  Copper, water, filtered, µg/L
  Copper, water, unfiltered, recoverable, µg/L
  Iron, water, unfiltered, recoverable, µg/L
  Iron, water, filtered, µg/L
  Zinc, water, filtered, µg/L
  Zinc, water, unfiltered, recoverable, µg/L
  Aluminum, water, unfiltered, recoverable, µg/L
  Aluminum, water, filtered, µg/L
  Selenium, water, filtered, µg/L
  PCBs, water, unfiltered, recoverable, g/day
  Rhodamine WT, water, unfiltered, recoverable, µg/L
  Radon-222, water, unfiltered, disintegrations per minute per liter
  Radon-222 counting error, water, unfiltered, disintegrations per minute per liter
  fChl grn/brn, water, in situ µg/L
  fChl, PC algae, water, in situ µg/L
  fChl, PE algae, water, in situ µg/L
  Percent fChl, grn/brn, in situ %
  Percent fChl, PC algae,in situ %
  Percent fChl, PE algae,in situ %
  Chlorophyll a, fluorometric method, corrected, water, µg/L
  Chlorophyll a, water, unfiltered, trichromatic method, uncorrected, µg/L
  Chlorophyll a, fluorometric method, uncorrected, µg/L
  Chlorophyll, total, phytoplankton, spectrophotometric method, uncorrected, µg/L
  Chlorophyll, total, water, in situ, fluorometric, 650-700 nanometers, relative fluorescence units (RFU)
  Chlorophyll a, total, in situ, fluorescence excitation at 370, 470, 525, 570, 590, 610 nm, fluorescence emission at 700 nm with correction for CDOM, µg/L
  Chlorophyll a, green algae, in situ, fluorescence excitation at 370, 470, 525, 570, 590, 610 nm, fluorescence emission at 700 nm with correction for CDOM, µg/L
  Chlorophyll a, cyanobacteria, in situ, fluorescence excitation at 370, 470, 525, 570, 590, 610 nm, fluorescence emission at 700 nm with correction for CDOM, µg/L
  Chlorophyll a, cryptophytes, in situ, fluorescence excitation at 370, 470, 525, 570, 590, 610 nm, fluorescence emission at 700 nm with correction for CDOM, µg/L
  Chlorophyll a, diatoms and dinoflagellates, in situ, excitation at 370, 470, 525, 570, 590, 610 nm, fluorescence emission at 700 nm with correction for CDOM, µg/L
  Colored dissolved organic matter (CDOM), in situ, fluorescence excitation at 370, 470, 525, 570, 590, 610 nm, fluorescence emission at 700 nm, mg/liter
  Fluorescence transmission (transparency to fluorescence) at 700 nm, percent
  UV fluorescence, water, in situ, single band, 370 nm excitation, 460 nm emission, relative fluorescence units (RFU)
  UV fluorescence, water, in situ, single band, 270 nm excitation, 340 nm emission, relative fluorescence units (RFU)
  UV fluorescence, water, in situ, single band, 370 nm excitation, 470 nm emission, relative fluorescence units (RFU)
  UV fluorescence, water, in situ, single band, 370 nm excitation, 520 nm emission, relative fluorescence units (RFU)
  Colored dissolved organic matter (CDOM), water, in situ, single band excitation, fluorescence emission, ppb QSE
  Colored dissolved organic matter, water, filtered, field, single band excitation, fluorescence emission, ppb QSE
  Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence, RFU
  Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence, concentration estimated from reference material, µg/L
  Chlorophyll a, modeled, water, in-situ, in-vivo fluorescence, concentration modeled from field samples analyzed by extraction, µg/L
  Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, ug/L
  Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, µg/L
  Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, relative fluorescence units, RFU
  Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, relative fluorescence units, RFU
  Colored dissolved organic matter (CDOM), water, in situ, fluorometric method, relative fluorescence units (RFU)
  Phycoerythrin fluorescence (fPE), water, in situ, relative fluorescence units (RFU), RFU
  Crude oil relative fluorescence (fCO), water, in situ, relative fluorescence units (RFU)
  Dark measurement spectral average, water, in situ, ultraviolet nitrate analyzer, raw counts
  Light measurement spectral average, water, in situ, ultraviolet nitrate analyzer, raw counts
  Absorbance at 254 nm, water, in situ, absorbance units
  Absorbance at 350 nm, water, in situ, absorbance units
  Phycocyanin (PC), water, in situ, concentration computed by regression of sensor data with field sample lab results, µg/L
  Colored dissolved organic matter fluorescence (fDOM), water, in situ, mg/l of carbon
  Chlorophyll, water, in situ, uncorrected for degradation products, computed by regression of sensor data with sample lab results, µg/L as chlorophyll
  Cyanobacterial abundance from a phycocyanin sensor (PC), water, in situ, concentration computed by regression of sensor data with field samples, cells/mL
  Phycoerythrin fluorescence (fPE), water, in situ, concentration estimated from reference material, µg/L as phycoerythrin
  Phycoerythrin (PE), water, in situ, concentration computed by regression of sensor data with field sample lab results, µg/L
  Cyanobacteria fluorescence of phycoerythrin (fPE), water, in situ, concentration estimated from reference material, cells/mL
  Cyanobacterial abundance from a phycoerythrin sensor (PE), water, in situ, concentration computed by regression of sensor data with field samples, cells/mL
  Optical brightener relative fluorescence (fOB), water, in situ, relative fluorescence units (RFU)
  Optical brightener fluorescence (fOB), water, in situ, concentration estimated from reference material, µg/L as 1,3,6,8-pyrene tetrasulfonic acid (PTSA)
  Wastewater relative fluorescence (fWW), water, in situ, relative fluorescence units (RFU)
  Rhodamine WT relative fluorescence (fRWT), water, in situ, relative fluorescence units (RFU)
  Fluorescein relative fluorescence (fFL), water, in situ, relative fluorescence units (RFU)
  Fluorescein fluorescence (fFL), water, in situ, concentration calibrated to reference material, µg/L
  Tryptophan, peak T, water, in situ, µg/l
  Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from ref. material, µg/l as PTSA
  Absorbance at 280 nanometers, water, in situ, absorbance units
  Absorbance at 370 nanometers, water, in situ, absorbance units
  Yttrium, suspended sediment larger than 62.5 microns, total digestion, dry weight, milligrams per kilogram
  Metolachlor, water, filtered, recoverable, µg/L
  PCBs, water, unfiltered, recoverable, µg/L
  Atrazine, water, filtered, recoverable, µg/L
  Metolachlor, water, dissolved, recoverable, g/day
  Atrazine, water, dissolved, recoverable, grams per day
  Chlorine (total residual), water, unfiltered, mg/L
  Chlorine (free available), water, unfiltered, mg/L
  Escherichia coli, defined substrate test method (DSTM), water, most probable number per 100 milliliters
  Nitrate, water, unfiltered, field, mg/L
  Inorganic nitrogen, water, dissolved, calculated as NH3+NO2+NO3, mg/L as N
  Inorganic nitrogen, water, dissolved, calculated as NH3+NO2+NO3, tons/day as N
  Orthophosphate, water, filtered, field, mg/L as phosphorus
  Orthophosphate, water, in situ, mg/L as phosphorus
  Nitrate, water, in situ, mg/L as nitrate
  Calcium, water, unfiltered, mg/L
  Phycocyanins, water, filtered, recoverable, µg/L
  Chlorophyll, total, water, fluorometric, 650-700 nanometers, in-situ sensor, µg/L
  Ammonia, water, dissolved, pounds per day as nitrogen
  Acifluorfen, water, filtered, recoverable, µg/L
  Turbidity, water, unfiltered, broad band light source (400-680 nm), detectors at multiple angles including 90 +-30 degrees, ratiometric correction, NTRU
  Backscatter turbidity, water, unfiltered, broad band light source (400-680 nm), detection angle 0-45 degrees to incident light, backscatter units (BU)
  Attenuation turbidity, water, unfiltered, broad band light source (400-680 nm), detection angle 180 degrees to incident light, attenuation units (AU)
  Turbidity, water, unfiltered, broad band light source (400-680 nm), multiple beam, detectors at multiple angles including 90 degrees, NTMU
  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +/-2.5 degrees, FNU
  Turbidity, water, unfiltered, monochrome near infra-red LED light source, 780-900 nm, detectors at multiple angles including 90 +-2.5 degrees, ratiometric correction, FNRU
  Turbidity, water, unfiltered, monochrome near infra-red LED light source, 780-900 nm, detection angle 0 degrees to incident light (backscatter), FBU
  Turbidity, water, unfiltered, monochrome near infra-red LED light source, 780-900 nm, detection angle 180 degrees to incident light (attenuation), FAU
  Turbidity, water, unfiltered, monochrome near infra-red LED light source, 780-900 nm, multiple beam, detectors at multiple angles including 90 degrees, FNMU
  Bromide, water, unfiltered, mg/L
  Fluorescence at 650-700 nm as a fraction of incident light at 470 nm, measured in situ, percent
  Chlorophyll a, water, in situ, in vivo fluorescence,µg/L
  Bed sediment, fall diameter (deionized water), percent smaller than 4 millimeters
  Suspended sediment, direct measurement, percent smaller than 0.5 millimeters
  Suspended sediment, direct measurement, percent smaller than 0.25 millimeters
  Suspended sediment, direct measurement, percent smaller than 0.125 millimeters
  Suspended sediment, direct measurement, percent smaller than 0.063 millimeters
  Mean particle diameter, calculated from fully processed size distribution, mm
  Chloride, water, dissolved, lb/day
  Chloride, water, dissolved, tons/day
  Sulfate, water, dissolved, short tons/day
  Suspended solids dried at 110 degrees Celsius, water, unfiltered, mg/L
  Residue, water, filtered, sum of constituents, mg/L
  Residue, water, dissolved, tons/day
  Dissolved solids, water, filtered, short tons per acre-foot
  Compaction, sediment, ft
  Suspended sediment, sieve diameter, percent smaller than 0.0625 millimeters
  Suspended sediment particles between 0.50 to 16.00 microns, water, unfiltered, computed by regression equation, count/L
  Suspended sediment particle load between 0.50 to 16.00 microns, water, unfiltered, computed by regression equation, counts/sec
  Suspended sediment particle concentration between 0.50 to 16.00 microns, water, unfiltered, mg/l
  Suspended sediment particle load between 0.50 to 16.00 microns, water, unfiltered, computed by regression equation, count/day
  Suspended sediment load, water, unfiltered, computed by regression equation, lb/day
  Suspended sediment particle load between 1.00 to 4.76 microns, water, unfiltered, computed by regression equation, counts per second
  Suspended sediment particle load between 1.00 to 4.76 microns, water, unfiltered, computed by regression equation, counts per day
  Nitrate plus nitrite yield, computed by regression equation, pounds per day per square mile, lb/day/mi²
  Nitrate plus nitrite yield, computed by regression equation, kilograms per day per square kilometer, kg/day/km²
  Total nitrogen [nitrate + nitrite + ammonia + organic-N] yield, computed by regression equation, pounds per day per square mile, lb/day/mi²
  Total nitrogen [nitrate + nitrite + ammonia + organic-N] yield, computed by regression equation, kilograms per day per square kilometer, kg/day/km²
  Phosphorus yield, computed by regression equation, pounds per day per square mile, lb/day/mi²
  Phosphorus yield, computed by regression equation, kilograms per day per square kilometer, kg/day/km²
  Suspended sediment yield, computed by regression equation, pounds per day per square mile, lb/day/mi²
  Suspended sediment yield, computed by regression equation, kilograms per day per square kilometer, kg/day/km²
  Salinity, water, computed by regression equation from specific conductance, milligrams per liter, mg/L
  Chloride, water, unfiltered, computed by regression equation, milligrams per liter, mg/L
  Chloride flux, water, unfiltered, computed by regression equation, kilograms per day, kg/day
  Chloride flux, water, filtered, computed by regression equation, kilograms per day, kg/day
  Chloride flux, water, unfiltered, computed by regression equation, pounds per day, lb/day
  Chloride flux, water, filtered, computed by regression equation, pounds per day, lb/day
  Chloride yield, water, unfiltered, computed by regression equation, kilograms per day per square kilometer, kg/day/km²
  Chloride yield, water, filtered, computed by regression equation, kilograms per day per square kilometer, kg/day/km²
  Chloride yield, water, unfiltered, computed by regression equation, pounds per day per square mile, lb/day/mi²
  Chloride yield, water, filtered, computed by regression equation, pounds per day per square mile, lb/day/mi²
  Orthophosphate, water, unfiltered, mg/L as phosphorus
  Chlorophyll a, phytoplankton, chromatographic-spectrophotometric method, µg/L
  Chlorophyll a, phytoplankton, chromatographic-fluorometric method, µg/L
  Ammonia, water, unfiltered, mg/L as NH4
  Nitrate, water, unfiltered, mg/L
  Bromide, water, filtered, mg/L
  Mercury, water, unfiltered, recoverable, µg/L
  Volume of water filtered, L
  Elevation of sample, ft
  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detector angles at 90 +/- 2.5 degrees and 30 +/- 15 degrees, ratiometric, FBRU
  Carbon dioxide, water, dissolved, at the water surface, ppm by volume of dissolved gases
  Total coliforms, water, filtered, in situ, fluorescence excitation at 385 nm, emission at 430 nm, colony forming units per 100 milliliters, cfu/100ml
  Total coliforms, water, unfiltered, in situ, fluorescence excitation at 385 nm, emission at 430 nm, colony forming units per 100 milliliters, cfu/100ml
  Suspended sediment volumetric concentration by Laser In-Situ Scattering and Tranmissometry (LISST), µL/L
  Full size suspended sediment volumetric diameter by Laser In-Situ Scattering and Tranmissometry (LISST), µm
  Suspended sediment volumetric diameter greater than 63 microns by Laser In-Situ Scattering and Tranmissometry (LISST), µL/L
  Suspended sediment volumetric diameter greater than 63 microns by Laser In-Situ Scattering and Tranmissometry (LISST), µm
  Fitting parameter root-mean-square error (RMSE), water, in situ, Ultraviolet Nitrate Analyzer
  Standard deviation, nitrate + nitrite, water, in situ, burst sample, Ultraviolet Nitrate Analyzer, mg/L as N
  Coefficient of variation, nitrate + nitrite, water, in situ, burst sample, Ultraviolet Nitrate Analyzer, %
  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 135-180 degrees, SDVB (SBU)
  Phosphorus flux, water, in situ, computed by regression equation, kg/day as phosphorus
  Tryptophan, water, in situ, relative fluorescence units (RFU)
  Salinity, water, in situ, tidally filtered, practical salinity units at 25 °C
  UV fluorescence, water, in situ, single band, excitation at 365 +-5 nm, emission at 480 +-40 nm, uncorrected for light attenuation, relative fluorescence units (RFU)
  UV fluorescence, water, single band, excit at 365 +-5nm, emiss at 480 +-40nm, uncorrected for light attenuation, ug/L as quinine sulfate equivalents (QSE)
  Surface temperature, non-contact, °C
  Photosynthetically active radiation (PAR), upward intensity, micromoles of photons per m²/s
  Photosynthetically active radiation (PAR), downward intensity, micromoles of photons per m²/s
  Far-red radiation, upward intensity, micromoles of photons per m²/s
  Far-red radiation, downward intensity, micromoles of photons per m²/s
  UV fluorescence, water, in situ, 250-260nm excitation, 325-375nm emission, relative fluorescence units (RFU)
  Escherichia coli, water, filtered, in situ, fluorescence excitation at 385 nm, emission at 430 nm, colony forming units per 100 milliliters, cfu/100ml
  Escherichia coli, water, unfiltered, in situ, fluorescence excitation at 385 nm, emission at 430 nm, colony forming units per 100 milliliters, cfu/100ml
  Suspended sediment concentration, mg/L
  Suspended sediment discharge, tons/day
  Total sediment discharge, tons/day
  Total sediment concentration, mg/L
  Suspended sediment load larger than 62.5 microns, sieve diameter, short tons/day
  Bedload sediment discharge, tons/day
  Suspended sediment load, water, unfiltered, estimated by regression equation, lbs/sec
  Suspended sediment load, water, unfiltered, estimated by regression equation, short tons/sec
  Suspended sediment load, water, unfiltered, computed, the product of regression-computed suspended sediment concentration and streamflow, tons/day
  Suspended sediment load, water, unfiltered, regression computed, turbidity and streamflow as regressors, short tons/day
  Suspended sediment concentration, from uncalibrated sensor, mg/L
  Suspended sediment concentration, water, unfiltered, at a fixed point in stream, estimated by a regression equation with turbidity, mg/L
  Suspended sediment discharge, pounds per day, lb/day
  Silica, water, dissolved, short tons/day
  Calcium, water, dissolved, short tons/day
  Magnesium, water, dissolved, short tons/day
  Sodium, water, filtered, tons/d
  Potassium, water, dissolved, short tons/day
  Bicarbonate, water, dissolved, short tons/day
  Phosphorus, water, dissolved, pounds per day
  Hydrolyzable phosphorus, water, dissolved, lb/day
  Organic carbon, water, dissolved, short tons/day
  Organic carbon, suspended sediment, short tons per day
  Nitrate plus nitrite, water, total, tons per day as nitrogen
  Orthophosphate, water, dissolved, pounds of phosphorus per day
  Orthophosphate, water, dissolved, lb/PO4/day
  Organic carbon, water, unfiltered, short tons/day
  Bedload transport rate of coarse fraction greater than 8 mm, computed by regression equation, Mg/day
  Bedload transport rate of coarse fraction greater than 8 mm, computed by regression equation, short tons/day
  Carbon dioxide load, water, dissolved, mg/s
  Nitrate plus nitrite load, water, in situ, mg/s as N
  Chlorophyll fluorescence (fChl) load, water, in situ, micrograms per second as chlorophyll
  Suspended sediment load, water, unfiltered, estimated by regression equation, mg/s
  Salinity load, water, in situ, g/s
  Dissolved organic matter fluorescence (fDOM) load, water, in situ, micrograms per sec as quinine sulfate equivalents (QSE)
  Specific conductance, water, unfiltered, laboratory, µS/cm at 25 °C
  Acid neutralizing capacity, water, unfiltered, fixed endpoint (pH 4.5) titration, laboratory, mg/L as CaCO3
  Sodium adsorption ratio, water, unfiltered, estimated by regression equation, number
  Salinity, water, unfiltered, practical salinity units at 25 °C
  Nitrate, water, dissolved, short tons of nitrate per day
  Phosphorus, water, unfiltered, short tons of phosphorus per day
  Phosphorus, water, dissolved, short tons of phosphorus per day
  Nitrite, water, dissolved, short tons of nitrogen per day
  Ammonia plus organic nitrogen, water, unfiltered, short tons of nitrogen per day
  Ammonia (NH3 + NH4+), water, dissolved, short tons of nitrogen per day
  Biochemical oxygen demand, water, unfiltered, 5 days at 20 degrees Celsius, short tons per day
  Suspended solids dried at 110 degrees Celsius, water, unfiltered, short tons per day
  Organic nitrogen, water, unfiltered, pounds of nitrogen per day
  Ammonia, water, unfiltered, pounds of nitrogen per day
  Nitrate plus nitrite, water, unfiltered, pounds of nitrogen per day
  Phosphorus, water, unfiltered, pounds per day
  Suspended solids, dried at 105 degrees Celsius, water, unfiltered, tons/d
  Ammonia plus organic nitrogen, water, unfiltered, pounds of nitrogen per day
  Total nitrogen, water, unfiltered, pounds per day
  Orthophosphate, water, unfiltered, pounds per day
  Orthophosphate, water, dissolved, pounds per day
  Nitrite plus nitrate, water, dissolved, lb/d as N
  Chlorophyll a, fluorometric method, uncorrected, area weighted average, µg/l
  Cyanobacteria (blue-green algae), Hydrolab in vivo fluorescence of phycocyanin, excitation at 590 nm, emission at 650 nm, cells/mL
  Cyanobacteria (blue-green algae), YSI in-vivo fluorescence of phycocyanin, excitation - 595, emission - 650 nm, cells/mL
  Phycocyanins (cyanobacteria), Turner Designs SCUFA in vivo fluorescence of phycocyanin, excitation at 595 nm, emission at 670 nm, µg/l
  Cyanobacteria (blue-green algae), water, in situ, phycocyanin, IVF (IVFU)
  Manganese, water, unfiltered, computed by regression of sensor data with field sample lab results, µg/l
  Type of quality assurance data associated with sample, code
  Orthophosphate, water, filtered, field, mg/L
  Ammonia, water, unfiltered, field, mg/L as nitrogen
  Nitrate, water, unfiltered, field, mg/L as N
  Nitrate, water, unfiltered, field, µmol/L
  Silica, water, unfiltered, field, mg/l
  Rhodamine WT fluorescence (fRWT), water, in situ, concentration calibrated to reference material, mg/l
  Nitrate plus nitrite, water, in situ, mg/L as N
  Dissolved organic carbon, water, in situ, estimated, mg/L
  Total organic carbon, water, in situ, estimated, mg/L
  Nitrite, water, in situ, µmol/L
  Nitrite, water, in situ, mg/L as N
  Molar ratio of nitrate (plus nitrite) and orthophosphate
  Eosin WT fluorescence (fEWT), water, in situ, concentration calibrated to reference material, µg/l
  Sulforhodamine WT fluorescence (fSWT), water, in situ, concentration calibrated to reference material, µg/l
  Chloride, water, unfiltered, mg/L
  Sodium, water, filtered, estimated by regression equation, mg/L
  Calcium, water, filtered, estimated by regression equation, mg/L
  Acid neutralizing capacity, water, unfiltered, estimated by regression equation, mg/L as CaCO3
  Residue, dissolved, water, filtered, estimated by regression equation, mg/L
  Suspended solids, water, unfiltered, estimated by regression equation, mg/L
  Total solids, water, unfiltered, estimated by regression equation, mg/L
  Chloride, water, filtered, estimated by regression equation, mg/L
  Sulfate, water, filtered, estimated by regression equation, mg/L
  Fecal coliforms, estimated by regression equation, water, colonies per 100 ml
  Escherichia coli, estimated by regression equation, water, colonies per 100 ml
  Atrazine, water, filtered, estimated by regression equation, µg/l
  Suspended sediment concentration, water, unfiltered, estimated by regression equation, mg/L
  Total nitrogen [nitrate + nitrite + ammonia + organic-N], water, filtered, estimated by regression equation, mg/L
  Total nitrogen [nitrate + nitrite + ammonia + organic-N], water, unfiltered, estimated by regression equation, mg/L
  Nitrate, water, filtered, estimated by regression equation, mg/L as nitrogen
  Ammonia (NH3 + NH4+), water, filtered, estimated by regression equation, mg/L as nitrogen
  Ammonia plus organic nitrogen, water, filtered, estimated by regression equation, mg/L as nitrogen
  Orthophosphate, water, unfiltered, estimated by regression equation, mg/L as phosphorus
  Orthophosphate, water, filtered, estimated by regression equation, mg/L as phosphorus
  Phosphorus, water, unfiltered, estimated by regression equation,mg/L as phosphorus
  Hydrolyzable phosphorus, water, filtered, estimated by GCLAS, mg/L as phosphorus
  Enterococci, water, defined substrate test method (DSTM), most probable number per 100 ml
  Set number, NWQL schedule 2001
  Sample volume, NWQL schedule 1394, ml
  Sample volume, NWQL schedule 1324, ml
  Sample volume, NWQL schedule 1608, ml
  Sample volume, NWQL schedule 1316, ml
  pH, water, unfiltered, laboratory, standard units
  Turbidity, water, unfiltered, field, NTU
  Turbidity, water, unfiltered, broad band light source (400-680 nm), detection angle 90 +/- 30 degrees to incident light, nephelometric turbidity units (NTU)
Meteorological Parameters
  Temperature, air, °C
  Temperature, air, °F
  Barometric pressure, mmHg
  Incident solar radiation intensity, (cal/cm²)/d
  Wind speed, mph
  Wind direction, degrees clockwise from north
  Precipitation, total, in
  Precipitation, total, inches/week
  Relative humidity, percent
  Precipitation, duration of storm event, minutes
  Precipitation, cumulative at given time, location 6, inches
  Precipitation, cumulative at given time, location 5, inches
  Precipitation, cumulative at given time, location 4, inches
  Precipitation, cumulative at given time, location 3, inches
  Precipitation, cumulative at given time, location 2, inches
  Precipitation, cumulative at given time, location 1, inches
  Precipitation, intensity at given time, location 6, inches per hour
  Precipitation, intensity at given time, location 5, inches per hour
  Precipitation, intensity at given time, location 4, inches per hour
  Precipitation, intensity at given time, location 3, inches per hour
  Precipitation, intensity at given time, location 2, inches per hour
  Precipitation, intensity at given time, location 1, inches per hour
  Dry days before precipitation event, days
  Precipitation total for defined period, in
  Wind run, miles
  Solar radiation, downward intensity, (cal/cm²)/min
  Solar radiation, net, (cal/cm²)/min
  Wind gust speed, air, kn
  Wind gust speed, air, mph
  Wind gust direction, air, degrees clockwise from true north
  Barometric pressure, uncorrected, inHg
  Barometric pressure, corrected to sea level, inches of water
  Barometric pressure, uncorrected, inches of water
  Barometric pressure, corrected to sea level, kPa
  Barometric pressure, uncorrected, kPa
  Total solar radiation (direct + diffuse radiation on a horizontal surface), watts/m²
  Net solar radiation, W/m²
  Wind speed, m/s
  Atmospheric water vapor pressure, calculated, kPa
  Standard deviation of wind direction, degrees
  Atmospheric saturated water vapor pressure, calculated, kPa
  Precipitation, mm/hr
  Barometric pressure (BP), uncorrected, ft of H2O
  Shortwave radiation, upward intensity, W/m²
  Shortwave radiation, downward intensity, W/m²
  Snow depth, m
  Precipitation, cumulative, inches
  Net radiation (net solar + net long wave radiation), upward intensity, W/m²
  Precipitation, cumulative, mm
  Snow depth, ft
  Physical Solar radiation (average flux density on a horizontal surface during measurement interval), kilowatts/m²
  Wind gust speed, air, m/s
  Precipitation, intensity at given time, inches per minute
  Barometric pressure, uncorrected, hectopascals
  Cosmic ray neutron flux, count per hour, count/hr
  Cosmic ray neutron, count, count/hr
  Dew point, degrees Celsius
  Dew point, degrees Fahrenheit
  Hail count, counts per square centimeters
  Barometric pressure, not corrected to sea level, mbar
  Temperature, snow, °C
  Wind speed, kn
  Ice thickness, ft
  Snow depth, in
  Precipitation, mm
  Total solar radiation (direct + diffuse radiation on a horizontal surface), upward intensity, watts per square meter, W/m²
  Evaporation rate, millimeters per day, mm/d
  Solar radiation, (average flux density on a horizontal surface during measurement interval), W/m²
  Solar radiation, (total flux density on a horizontal surface during measurement interval), megajoules/m²
  Photosynthetically active radiation (average flux density on a horizontal surface during measurement interval), µmol of photons/m²/s
  Photosynthetically active radiation (total flux density on a horizontal surface during measurement interval), µmol of photons/m²/s
  Photosynthetically active radiation (PAR), water, in situ, µmol /m²/s
  Precipitation, in
Physical Properties Parameters
  Stream width, ft
  Location in cross section, distance from left bank looking downstream, ft
  Evaporation temperature, 48 inch pan, °C
  Evaporation temperature, 24 inch pan, °C
  Wet bulb temperature, °C
  Cloud cover, %
  Altitude feet above mean sea level
  Surface area, square miles
  Evaporation total, in/d
  Surface area, square feet
  Surface area, acres
  Evaporation, accumulated, inches
  Incident light intensity, 400-700 nanometers, microeinsteins per square meter per second
  Incident light, daily total, 400-700 nanometers, microeinsteins per square meter
  Cations minus anions, water, milliequivalents
  Moisture content, fraction of dry weight, %
  Loss on ignition, from nonfilterable residue, mg/L
  Residue, fixed nonfilterable, mg/L
  Gas bubbles, severity, code
  Floating garbage, severity, code
  Streamflow, severity, code
  Radon-222, air, unfiltered, disintegrations per minute per liter
  Radon-222 counting error, air, unfiltered, disintegrations per minute per liter
  Illumination, lumens/ft²
  Gate opening width, ft
  Gate opening, height, m
  Gate opening, height, ft
  Moisture content, soil, dry weight, percent
  Compaction, aquifer system, ft
  Flow, in conduit or through a treatment plant, Mgal/d
  Distance, observation point to stream bottom, ft
  Distance, observation point to sampling location, ft
  Absorbance, UV, 254 nm, 1 cm pathlength, water, filtered, units per centimeter
  Total hydrocarbons, soil gas, %
  Barometric pressure, corrected to sea level, inches of mercury
  Significant wave height, ft
  Maximum wave height, ft
  Mean zero upcross wave period, seconds
  Dissolved solids dried at 180 degrees Celsius, water, filtered, mg/L
  Altitude of land surface, ft
  Depth of hole, ft below land surface datum
  Pump or flow period prior to sampling, minutes
  Distance from outlet or southernmost point, ft
  Net radiation (net solar + net long wave radiation), W/m²
  Potential latent heat flux, calculated by Penman method, W/m²
  Potential evapotranspiration (PET), calculated by Priestley-Taylor method, mm/hr
  Potential evapotranspiration (PET), calculated by Penman method, mm/hr
  Soil heat flux at soil surface, calculated, W/m²
  Soil water matric potential, negative bars
  Change in heat flux density between 8 centimeter soil depth and the surface, calculated, W/m²
  Evapotranspiration total, in/day
  Water column pressure, pounds per square inch
  Evapotranspiration, mm/day
  Ratio of number of good to total number of daytime evapotranspiration (ET) measurements, number
  Evapotranspiration (ET) method, measured (1) or modeled (0), code
  Thermal survey period duration, days
  Absolute pressure from unvented pressure transducer, ft
  Matric potential or pressure head, cm
  Wave height, Fourier transformation, ft
  Wave period, Fourier transformation, seconds
  Longwave radiation, upwelling intensity, watts per square meter
  Longwave radiation, downwelling intensity, watts per square meter
  Shortwave solar radiation, W/m²
  Evapotranspiration, inches
  Moisture content, soil, volumetric, fraction of total volume
  Atmospheric water vapor density, g/m³
  Visible radiation (average flux density), µE/s/m²
  Area, cross section, m²
  Velocity to compute isokinetic transit rate, ft/s
  Water depth, water surface to bottom, ft
  Evaporation per recording interval, mm
  Net incident shortwave radiation, W/m²
  Net incident longwave radiation, W/m²
  Barometric pressure, uncorrected, psi
  Bulk electrical conductance, soil, dS/m
  Sublimation from snowpack per recording interval, mm
  Albedo (ratio of reflected to total incoming solar radiation), ratio
  Location of salt front in river miles upstream from mouth, miles
  Soil water matric potential, bars
  Extinction reference absorbance, absorbance units per centimeter
  Extinction measurement absorbance, absorbance units per centimeter
  Horizontal width of vertical, m
  Bedload sampler intake width, mm
  Absolute pressure from unvented pressure transducer, mm/Hg
  Dielectric permittivity, soil, in situ
  Volume, total during measurement interval, liters
  Standard deviation, from NOS-averaged dataset, ft
  Temperature #1, Aquatrak, air temperature of the upper sounding well, °F
  Temperature #2, Aquatrak, air temperature of the bottom sounding well, °F
  Mean wave height, m
  Mean wave period, s
  Significant wave height, m
  Significant wave period, s
  Maximum wave height, m
  Mean wave direction, degrees
  Peak wave direction, degrees
  Snowpack density, kilograms per cubic meter
  Liquid water content, snowpack, percent of total volume
  Mass flux density of drifting snow particles, g/m²/second
  Soil infiltration,cumul,unsat cm
  Elevation, NAVD88 ft
  Elevation, NAVD88 m
  Water content of snow, mm
  Irrigation depth, sprinkler, inches
  Irrigation depth, sprinkler, mm
  Peak wave period, seconds
  Volumetric water content, sapwood, volumetric, fraction of total volume
  Temperature, sapwood, degrees Celsius
  Precipitation, throughfall of single or multiple trees, millimeters
  Cosmic ray neutron, count per hour
  Lightning strike, count
  Depth to bottom at sample location, ft
  Open pressure, pounds per square inch
  Shut in pressure, psi
  Pressure at bottom of hole, psi
  Area, cross section, square feet
  Temperature, intragravel water, °C
  Temperature, area-weighted-average, °C
  Loss on ignition, from suspended solids, water, unfiltered, tons per day
  Latitude of sample location, degrees-minutes-seconds (ddmmss)
  Longitude of sample location, degrees-minutes-seconds (ddmmss)
  Weighing bucket weight g
  CO2, water, diss, in situ mg/l
  Electrical resistance, ohms
  Volumetric soil moisture content period, for internal control of sensor, milliseconds
  Distance to snow surface from sensor, centimeters
  Pavement surface condition, code
  Pavement friction, code
  Sensor lens condition, code
  Pavement water film depth, mm
  Temperature, road subbase, °C
  Pavement liquid sodium chloride area density, computed from pavement salinity, g/m²
  Ice on pavement, water film, computed from pavement temperature and salinity, %
  Temperature, freezing point of liquid on pavement surface, computed from pavement salinity, °C
  Pavement friction coefficient, determined by road condition
Miscellaneous Parameters
  Location in cross section, distance from right bank looking upstream, ft
  Location in cross section, distance from right bank looking upstream, %
  Sampling depth, ft
  Location in cross section, fraction of total depth, %
  Sampling accounting number
  Duration of exposure, sample or test, days
  Sample length, inches
  Project number
  Number of sampling points, count
  Sampling depth, m
  Time of travel, hours
  Storm event serial number
  Elapsed time of storm, hours
  Signal, sediment, Markland meter, count
  Bighead carp (Hypophthalmichthys nobilis), count of tagged fish per hour
  Silver carp (Hypophthalmichthys molitrix), count of tagged fish per hour
  Hybrid asian carp (Hypophthalmichthys nobliis and Hypophthalmichthys molitrix hybrids), count of tagged fish per hour
  Sum of bighead, silver and hybrid carp, count of tagged fish per hour
  Shovelnose sturgeon (Scaphirhynchus platorynchus), count of tagged fish per hour
  Bighead carp (Hypophthalmichthys nobilis), count of unique tagged fish per hour
  Silver carp (Hypophthalmichthys molitrix), count of unique tagged fish per hour
  Hybrid asian carp (Hypophthalmichthys nobliis and Hypophthalmichthys molitrix hybrids), count of unique tagged fish per hour
  Sum of bighead, silver and hybrid carp, count of unique tagged fish per hour
  Shovelnose sturgeon (Scaphirhynchus platorynchus), count of unique tagged fish per hour
  Sample volume, gallons
  Lockage, count of lock openings, units
  Temperature, internal, within equipment shelter, °C
  Temperature, internal, within equipment shelter, °F
  Gate openings, reservoir, all gates, ft
  Distance, observation point to sample location, ft
  Temperature, vent gas, volcanic, °C
  Gain control, automatic receiver, acoustic velocity meter, decibels
  Velocity samplings, good, average stored, acoustic velocity meter, %
  Diagnostic code, tattler, acoustic velocity meter, number
  Fecal coliforms, M-FC MF method, bed sediment, dry weight, colony forming units per gram
  Methane, soil gas, uncorrected for temperature and pressure, percent of soil gas, % by volume
  Oxygen, soil gas, uncorrected for temperature and pressure, percent of soil gas, % by volume
  Carbon dioxide, soil gas, uncorrected for temperature and pressure, percent of soil gas, % by volume
  Oxygen plus argon, soil gas, uncorrected for temperature and pressure, percent of soil gas, % by volume
  Dinitrogen, soil gas, uncorrected for temperature and pressure, percent of soil gas, % by volume
  Argon, soil gas, uncorrected for temperature and pressure, percent of soil gas, % by volume
  Oxygen, soil gas, corrected for temperature and pressure, percent of soil gas, % by volume
  Carbon dioxide, soil gas, corrected for temperature and pressure, percent of soil gas, % by volume
  Carbon dioxide efflux, soil gas, micromoles of carbon dioxide per square meter per second
  Pheophytin a, phytoplankton, µg/L
  PCB congener 51, bed sediment smaller than 2 mm, recoverable, dry weight, µg/kg
  Soil temperature, °F
  Soil-heat flux, W/m²
  Latent heat flux, W/m²
  Sensible heat flux, W/m²
  Respiration, mg O2/m²/day
  Sample purpose, code
  Sampling condition, code
  Specific gravity
  Depth of sensor below water surface, ft
  Depth of sensor below water surface, m
  Collector wet exposure (time within recording interval that collector is open when it should be open), seconds
  Collector dry exposure (time within recording interval that collector is open but should be closed), seconds
  Collector missed exposure (time within recording interval that collector is closed but should be open), seconds
  Blocked optical sensor (time within recording interval that optical sensor is blocked), seconds
  Datalogger scan time per recording interval, seconds
  Optical sensor particle counts within recording interval, number
  Collector lid cycles in recording interval, number
  Thermal survey period starting time, 24 hour clock, hour-minute
  Raw sensor value, millivolts
  Temperature of sensor, °C
  Sediment corrected acoustic backscatter (SCB), decibels
  Sediment attenuation coefficient (SAC), dB/m
  Tree sap flow, grams of sap per hour
  Count of daytime half-hour periods with evapotranspiration data
  Daily percentage of modeled (gap-filled) evapotranspiration data
  Soil temperature, °C
  Coefficient used to adjust discharge, Slope-Q computation
  Sensor offset, water level sensor, ft;
  Number of outliers, data points discarded from NOS-averaged dateset, count
  Acoustic backscatter, collected using an acoustic Doppler meter, corrected for beam spreading and absorption of the acoustic signal due to water properties, dB
  Instrument noise level, measured by an acoustic Doppler meter, in counts
  Attenuation corrected backscatter, uncalibrated from LISST-ABS instrument, in counts
  Bedload transport rate, derived by regression equation, megagrams per day
  Bedload transport rate, derived by regression equation, short tons/day
  Underwater sound level related to sediment-generated noise, averaged from 0 to 0.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 0.5 to 1.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 1.0 to 1.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 1.5 to 2.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 2.0 to 2.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 2.5 to 3.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 3.0 to 3.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 3.5 to 4.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 4.0 to 4.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 4.5 to 5.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 5.0 to 5.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 5.5 to 6.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 6.0 to 6.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 6.5 to 7.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 7.0 to 7.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 7.5 to 8.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 8.0 to 8.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 8.5 to 9.0 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 9.0 to 9.5 kHz, decibels
  Underwater sound level related to sediment-generated noise, averaged from 9.5 to 10 kHz, decibels
  Air gap, ft
  Radar amplitude, dimensionless
  Radar signal to noise quality assurance parameter, dB
  Opposite direction content quality assurance parameter, %
  Underwater sound level related to sediment-generated noise, acoustic power wide-band integration from 2.0-22 kHz, dB
  Underwater sound related to sediment-generated noise, acoustic power wide-band integration from 2.0-10 kHz, dB
  Acoustic doppler velocity meter cell interface number
  Temperature of sensor, °F
  Collector total exposure (time within recording interval that collector is open), seconds
  Underwater sound level related to sediment-generated noise, acoustic power wide-band integration from 2.0-10 kHz, µPa²
  Power plant load generation, meter reading, mw
  Moisture content, soil, volumetric, percent of total volume
  Transducer excitation, depth sensing, millivolts
  Transducer signal, depth sensing, millivolts
  Water content of snow, in
  Temperature, soil, °C
  Individuals in sample, biota, number
  Recovery fraction ratio
  Depth to top of sampling interval, m
  Dial reading, number
  Starting time, 24 hour clock, hhmm
  Sample frequency, code
  Chloride, soluble, dry atmospheric deposition, mg/kg
  Well purging condition, code
  Project component, code
  Sampler type, code
  Blue green algae, YSI flourescence probe, cells/mL
  Number of outliers, Aquatrak, data points discarded from the 181 point dataset, number
  Temperature #1, Aquatrak, air temperature of the upper sounding well, °C
  Temperature #2, Aquatrak, air temperature of the bottom sounding well, °C
  Dissolved oxygen charge, membrane DO sensor performance, number
  Count of samples collected by autosampler, number
  Status of equipment alarm, units in data descriptor
  Index of water-quality deviation from established baseline, number
  Standard error of estimate for SSC by regression (associated with PCODE 99409), logarithmic mg/l
  Standard error of estimate for SSC by regression (associated with PCODE 99409), mg/l
  Upper 90 percent prediction limit for SSC by regression (PCODE 99409), mg/l
  Lower 90 percent prediction limit for SSC by regression (PCODE 99409), mg/l
  Upper 95 percent prediction limit for SSC by regression (PCODE 99409), mg/l
  Lower 95 percent prediction limit for SSC by regression (PCODE 99409), mg/l
  Standard error of estimate for suspended sediment load by regression (associated with PCODE 80297) in logarithmic short tons/day
  Standard error of estimate for suspended sediment load by regression (associated with PCODE 80297), short tons/day
  Upper 90 percent prediction limit for suspended sediment load by regression (PCODE 80297), short tons/day
  Lower 90 percent prediction limit for suspended sediment load by regression (PCODE 80297), short tons/day
  Upper 95 percent prediction limit for suspended sediment load by regression (PCODE 80297), short tons/day
  Lower 95 percent prediction limit for suspended sediment load by regression (PCODE 80297), short tons/day
  Reference or tracking number
  Available memory in data logger, kB
  Electric current, amps
  Circuit quality, pass (0) or fail (1), code
  Sample event, sampler is actively collecting a sample (1), code
  Sample variance, calculated from multiple measurements, number
  Activations of water-quality instrumentation wiper, count
  Rate of change, ft per hour
  Instrument filter pressure, mbar
  Colloid matches, count
  Observations recorded, GNSS data file, percent, %
  Fixed ambiguity, percent, %
  Overall root mean squared error, feet, ft
  Vertical peak-to-peak error, feet, ft
  Water Science Center special 99900
  Water Science Center special 99901
  Water Science Center special 99902
  Water Science Center special 99903
  Water Science Center special 99904
  Water Science Center special 99905
  Water Science Center special 99906
  Water Science Center special 99907
  Water Science Center special 99908
  Water Science Center special 99909
  Water Science Center special 99910
  Water Science Center special 99911
  Water Science Center special 99912
  Water Science Center special 99913
  Water Science Center special 99914
  Water Science Center special 99915
  Water Science Center special 99916
  Water Science Center special 99917
DCP/Gage Performance Parameters
  Pressure, relative, manometer tank, count
  Voltage, hazard trip switch, volts
  Temperature, internal, data collection platform, °C
  Temperature, internal, within data collection platform, °F
  Voltage, V
  DCP battery voltage, V
  Pressure, absolute from unvented pressure transducer, psi
  Location of Acoustic Doppler Velocity Meter cell begin, ft
  Location of Acoustic Doppler Velocity Meter cell begin, m
  Acoustic Doppler Velocity Meter signal to noise ratio
  Location of Acoustic Doppler Velocity Meter cell end, ft
  Acoustic Doppler Velocity Meter standard deviation, data element specified in data descriptor
  Acoustic Doppler Velocity Meter standard error of velocity, ft per second
  Location of Acoustic Doppler Velocity Meter cell end, m
  Acoustic Doppler Velocity Meter standard error of velocity, centimeters per second
  Voltage ratio, voltage of transmitted electromagnetic pulse divided by the voltage of the returned pulse
  Acoustic signal strength, units specified in data descriptor
  Instrument orientation, degrees clockwise from true north
  Instrument pitch (front to back movement), units specified in data descriptor
  Instrument roll (side to side movement), units specified in data descriptor
  DRGS transmission error codes
  DCP signal to noise ratio
  DCP signal modulation index, dB
  Estimate of DCP transmitted power, dB
  DCP frequency offset from channel center, Hz
  Number of bad characters transmitted by DCP
  Data collection platform transmission delivery delay, seconds
  Data relay ground station source node, code
 
Choose Output Format
Display Summary of Selected Sites
Choose one of the following options for displaying descriptions of the sites meeting the criteria above:
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Show sites on a mapNew
?
Table of sites
?
Scroll list of sites -- allows selection of data for multiple sites
?
Brief descriptions -- allows selection of data for multiple sites
?
        (Select fields to include in site-description output)
       
?
Save file of selected sites to local disk for future upload

Retrieve USGS Surface-Water Daily Data for Selected Sites
Choose one of the following options for displaying data for the sites meeting the criteria above
?
Retrieve data for:
the previous days (1 - 365) **OR**
for the date range:   (1838-01-01 through 2025-09-28)

Output Options:
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Graphs of data   --  
?
Graphs of data with long-term statistics   --  
?
Graphs of data without long-term statistics   --  
?
Graphs of data with field measurements   --  
?
Table of data
?
Tab-separated data *

 * Save compressed files with a .gz file extension.