USGS Water-Year Summary for Site 01651770

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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(Min.,Max.,Mean) [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

01651770 HICKEY RUN AT NATIONAL ARBORETUM AT WASHINGTON, DC

LOCATION - Lat 38°54'58.0", long 76°58'07.9" referenced to North American Datum of 1983, Washington, DC, Hydrologic Unit 02070010, on left bank 340 ft downstream from New York Ave, 760 ft upstream from Hickey Ln NE bridge. Water quality data collected at site 265 ft upstream from present gage location.

DRAINAGE AREA - 1.01 mi². from automated delineation using 30-meter National Elevation Dataset, digital elevation model data, dated 2006. October 2012 to November 2019, 0.99 mi², from automated delineation using 30-meter National Elevation Dataset, digital elevation model data, dated 2006.

REVISIONS HISTORY -

https://waterdata.usgs.gov/nwis/dv/?site_no=01651770: 2013
https://waterdata.usgs.gov/nwis/uv/?site_no=01651770: 2019

https://waterdata.usgs.gov/nwis/uv/?site_no=01651770: 2020-2021.

The gage height for measurement 7 was revised on March, 23, 2022 due to a revision to the associated gage-height record.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 2012 to current year.

GAGE - Water stage recorder and crest-stage gage. Datum of gage is 16.28 ft above North American Vertical Datum of 1988. October 2012 to November 2019, at site 265 ft upstream at gage datum 17.28 ft above NAVD88.

REMARKS -

Water Year 2024: Records fair. No estimated daily discharges.

Water Years 2022-2023: Records fair, except those for estimated discharges, which are rated poor.

Water Years 2020-2021: Records fair, except those above 700 ft³/s, and those for estimated discharges, which are poor.

Water Years 2017-2019: Records poor, including those for estimated discharges.

Water Year 2016: Records poor, including those for estimated daily discharges.

Water Year 2015: Records poor. No estimated daily discharges.

Water Year 2014: Records poor, including those for estimated daily discharges.

Water Year 2013: Record accuracy statement can be found in the Annual Water Data Report.

U.S. Geological Survey satellite data-collection platform at station (SW). U.S. Geological Survey water-data telemeter at station (QW).

WATER-QUALITY RECORDS

PERIOD OF RECORD - January 2013 to current year.

INSTRUMENTATION - Water-quality monitor, January 2013 to current year.

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 -

SPECIFIC CONDUCTANCE: Maximum, 57,900 microsiemens per centimeter, February 17, 2015*; minimum, 29 microsiemens per centimeter on 9/10/20.

WATER TEMPERATURE: Maximum, 31.2°C, on September 3, 2018 ; minimum, 0.8°C, on February 21, 2015.

TURBIDITY EXO: Maximum, 2474.08 FNU, recorded on 2024-07-21 ; minimum, 0.7 FNU was recorded on 10/16/21*.

TURBIDITY 6136: (Discontinued April 06, 2020): Maximum, 1300 formazin nephelometric units (FNU), December 30, 2018; minimum, 0.0 formazin nephelometric units (FNU), April 26, 2013*

*Multiple occurrences of the same extreme; first occurrence noted.