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USGS 01649500 NORTHEAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MD

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 38°57'36.9", long 76°55'33.5", Prince Georges County, Hydrologic Unit 02070010,
   on left bank 100 feet downstream of bridge on Riverdale Road, 1.8 mi downstream from Indian Creek, and 
   1.8 mi upstream from confluence with Northwest Branch.
DRAINAGE AREA.--72.8 mi2.
PERIOD OF RECORD.--August 1938 to current year.
REVISED RECORDS.--WDR MD-DE-75-1: 1972(M).
GAGE.--Water-stage recorder, and crest-stage gage. Datum of gage is 11.92 ft above North American 
   Vertical Datum of 1988. Prior to June 12, 1942, nonrecording gage; June 12, 1942 to Mar. 22, 1966, 
   and Apr. 12, 1967 to Sept. 3, 1969, water-stage recorder, all at bridge at datum 14.00 ft above National
   Geodetic Vertical Datum of 1929. Mar. 23, 1966 to Apr. 11, 1967, nonrecording gage 600 ft downstream from
   bridge at datum 9.25 ft above National Geodetic Vertical Datum of 1929. Sept. 3, 1969 to Jan. 12, 2012,
   recording gage on right bank at downstream side of bridge.
REMARKS.--U.S. Geological Survey satellite data-collection platform at station. Some regulation at low flow
   by sand and gravel plants upstream from station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 12,000 ft3/s, June 22, 1972, and June 26, 2006. 
   Maximum gage height, 12.93 ft, Oct. 16, 1942; minimum discharge, unknown.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Aug. 23 or 24, 1933, reached a stage of about 15.5 ft
   at datum 14.00 ft above National Geodetic Vertical Datum of 1929, from floodmarks, discharge, 10,500 ft3/s, 
   from rating curve extended above 3,000 ft3/s on basis of velocity-area study.
COOPERATION.--Funding for the operation of this station is provided by Prince George's County
   Department of Environmental Resources and the U.S. Geological Survey.  
 
Boating safety tips
This station managed by the MD-DE-DC Water Science Center Baltimore office.

Available Parameters Available Period
All 7 Available Parameters for this site
  
00010 Temperature, water 2007-10-01  2017-03-22
00060 Discharge 2007-10-01  2017-03-22
00065 Gage height 2007-10-01  2017-03-22
00095 Specific cond at 25C 2007-10-01  2017-03-22
00300 Dissolved oxygen 2007-10-01  2017-03-22
00400 pH 2007-10-01  2017-03-22
63680 Turbidity, Form Neph 2007-10-01  2017-03-22

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Summary of all available data for this site
Instantaneous-data availability statement


Temperature, water, degrees Celsius

Most recent instantaneous value: 10.2 03-22-2017   20:25 EST
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Discharge, cubic feet per second

Most recent instantaneous value: 41 03-22-2017   20:25 EST
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Daily discharge, cubic feet per second -- statistics for Mar 22 based on 78 years of record more
Min
(2009)
Most Recent
Instantaneous
Value Mar 22
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(1958)
17 41 52 83 135 169 674


Gage height, feet

Most recent instantaneous value: 0.94 03-22-2017   20:25 EST
Graph of  Gage height, feet

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

Most recent instantaneous value: 755 03-22-2017   20:25 EST
Graph of  Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

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Dissolved oxygen, water, unfiltered, milligrams per liter

Most recent instantaneous value: 10.9 03-22-2017   20:25 EST
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pH, water, unfiltered, field, standard units

Most recent instantaneous value: 8.0 03-22-2017   20:25 EST
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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

Most recent instantaneous value: 8.9 03-22-2017   20:25 EST
Graph of  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

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