USGS Water-Year Summary for Site 01585100

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	Available Parameters
	00060 Discharge(Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

01585100 WHITEMARSH RUN AT WHITE MARSH, MD

LOCATION - Lat 39°22'14.8", long 76°26'45.8" referenced to North American Datum of 1983, Baltimore County, MD, Hydrologic Unit 02060003, at upstream side of bridge on State Highway 7, 1.0 mi southwest of White Marsh, and 3.0 mi upstream from mouth.

DRAINAGE AREA - 7.61 mi².

REVISIONS HISTORY - WDR MD-DE-73-1: 1960(M), 1967-68, 1969(M). WDR MD-DE-79-1: 1965-66(M). WRD-US-2010: 2006-07(P).

SURFACE-WATER RECORDS

PERIOD OF RECORD - February 1959 to September 1989, March 1992 to current year.

GAGE -

Water-stage recorder, crest-stage gage and rock control.

Datum of gage is 33.68 ft above North American Vertical Datum of 1988. From October 1, 2012 to April 14, 2022, datum of gage published as 33.71 ft above North American Vertical Datum of 1988. From October 1, 2004 to September 30, 2012, datum of gage was published as 34.52 ft above National Geodetic Vertical Datum of 1929. Prior to October 1, 2004, datum of gage published as 38.96 ft above National Geodetic Vertical Datum of 1929.

September 30, 2004 to September 8, 2017, water-stage recorder at site 80 ft downstream on right wing wall at present datum.

June 12, 2002 to September 30, 2004, water-stage recorder at site 2,500 ft upstream, on left downstream side of Interstate 95 box culvert at gage datum 4.44 ft higher.

Prior to June 12, 2002, water-stage recorder at site on left bank, upstream side of Route 7 bridge at gage datum 4.44 ft higher.

REMARKS -

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

Water Years 2017-2021: Records poor, including those for estimated discharges.

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

Water Year 2015: Records poor, including those for estimated daily discharges. Flows affected by construction upstream throughout the water year.

Water Year 2014: Records fair, except those below 2 ft³/s and those for estimated daily discharges, which are poor. Flows affected by construction upstream throughout the water year.

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

Low flow affected by operations of sand and gravel plant in vicinity of gage. U.S. Geological Survey satellite data-collection platform at station.