USGS Water-Year Summary for Site 01651800

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	63680 Turbidity, Form Neph(Mean,Min.,Max.) [Discontinued]
	63680 Turbidity, Form Neph(Max.,Mean,Min.)

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Water year 2024: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2024

01651800 WATTS BRANCH AT WASHINGTON, D.C.

LOCATION - Lat 38°54'04.6", long 76°56'35.8" referenced to North American Datum of 1983, Washington, DC, Hydrologic Unit 02070010, at upstream side of Minnesota Ave. bridge, and 1.0 mi upstream from mouth.

DRAINAGE AREA - 3.36 mi².

REVISIONS HISTORY -

(Water Quality) https://waterdata.usgs.gov/nwis/dv/?site_no=01651800: 2015

https://waterdata.usgs.gov/nwis/dv/?site_no=01651800: 2008-2018.

The date of measurement 151 was revised on November 21, 2019.

SURFACE-WATER RECORDS

PERIOD OF RECORD - June 1992 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 10.73 ft above North American Vertical Datum of 1988 (NAVD88). June 1992 to Sept. 30, 2007, at site 210 ft upstream at gage datum 5.00 ft higher (15.73 ft above NAVD88). October 1, 2007 to September 30, 2008 at site 10 ft upstream at gage datum 5.00 ft higher (15.73 ft above NAVD88). October 1, 2008 to June 13, 2016, at site 10 ft upstream at current gage datum. June 13, 2016 to current year, at current location and gage datum.

REMARKS -

Water Years 2023-2024: Records poor, including those for estimated discharges.

Water Years 2019-2022: Records fair, except those for estimated discharges, which are poor.

Water Years 2017-2018: Records poor, including those for estimated discharges.

Water Years 2014-2016: Records fair, except those for estimated daily discharges, which are poor.

Water Year 2013 and prior years' accuracy statements can be found in Annual Water Data Reports.

U.S. Geological Survey water-data telemeter at station.

WATER-QUALITY RECORDS

PERIOD OF RECORD - August 2012 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: January 2013 to present. WATER TEMPERATURE: January 2013 to present. TURBIDITY: January 2013 to present.

COOPERATION - Funding for this station is provided by the United States Environmental Protection Agency Chesapeake Bay Program Office (USEPA/CBPO) in collaboration with the Washington, DC District Department of the Environment, and the U.S. Geological Survey.

INSTRUMENTATION - Water-quality monitor January 2013 through present.

REMARKS -

Turbidity values greater than 1,000 formazin nephelometric units (FNU) exceed the instrument calibration range. Values above 1,000 FNU are included in the record but are presumed to have lower accuracy.

The accuracy limit of the turbidity sensor in low turbidity water is +/- 0.3 FNU.

October 1, 2024:

Values are censored and qualified as Less Than (<) 0.3 FNU if they are recorded below 0.3 FNU.

EXTREMES FOR PERIOD OF RECORD -

YSI EXO V3

WATER TEMPERATURE: Maximum, 31.6°C, July 19, 2013 *; minimum, -0.4°C, on February 22, 2015 *.

SPECIFIC CONDUCTANCE: Maximum, 17200 microsiemens per centimeter, January 7, 2022*; minimum, 22 microsiemens per centimeter, June, 14, 2021.

TURBIDITY: Maximum, 989 formazin nephelometric units (FNU), March 31, 2021; minimum, 0.74 formazin nephelometric units (FNU), August 30, 2023.

YSI 6-Series sonde

TURBIDITY: Maximum, 1,450 formazin nephelometric units (FNU), November 28, 2014 *; minimum, 0.0 formazin nephelometric units (FNU), October 21, 2016 *.

* Multiple occurrences of the same extreme in selected dataset.
Extremes date/time determined from un-rounded values