Station name
Date and time
Water Level/Flow Parameters
Reservoir storage, acre-ft (1 sites)
Streamflow, ft³/s (401 sites)
Elevation of reservoir water surface above datum, ft (17 sites)
Gage height, ft (393 sites)
Lake or reservoir water surface elevation above NGVD 1929, ft (2 sites)
Lake or reservoir water surface elevation above NAVD 1988, ft (12 sites)
Estuary or ocean water surface elevation above NAVD 1988, ft (1 sites)
Depth to water level, ft below land surface (77 sites)
Mean Stream velocity from field sensor, ft/s (1 sites)
Long-term mean daily streamflow, ft³/s
Long-term median daily streamflow, ft³/s
Water Quality Parameters
Temperature, water, °C (145 sites)
Temperature, water, °F (2 sites)
Total partial pressure of dissolved gases, water, unfiltered, mmHg (1 sites)
Total partial pressure of dissolved gases, water, unfiltered, percent of saturation (1 sites)
Specific conductance, water, unfiltered, µS/cm at 25 °C (92 sites)
Dissolved oxygen, water, unfiltered, mg/L (56 sites)
Dissolved oxygen, water, unfiltered, %saturation (18 sites)
pH, water, unfiltered, field, standard units (55 sites)
Colored dissolved organic matter (CDOM), water, in situ, single band excitation, fluorescence emission, ppb QSE (1 sites)
Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence, RFU (3 sites)
Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence, concentration estimated from reference material, µg/L (1 sites)
Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, ug/L (1 sites)
Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, µg/L (1 sites)
Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, relative fluorescence units, RFU (1 sites)
Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, relative fluorescence units, RFU (1 sites)
Colored dissolved organic matter (CDOM), water, in situ, fluorometric method, relative fluorescence units (RFU) (1 sites)
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +/-2.5 degrees, FNU (45 sites)
Nitrate plus nitrite, water, in situ, mg/L as N (9 sites)
Dissolved organic carbon, water, in situ, estimated, mg/L (1 sites)