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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01585200 WEST BRANCH HERRING RUN AT IDLEWYLDE, MD
LOCATION - Lat 39°22'25.1", long 76°35'03.6" referenced to North American Datum of 1983, Baltimore County, MD, Hydrologic Unit 02060003, on left bank 40 ft downstream from bridge on Regester Avenue, at Idlewylde, 0.1 mi north of Baltimore City limits, 1.0 mi upstream from mouth, and 1.3 mi east of State Highway 45.
DRAINAGE AREA - 2.13 mi².
REVISIONS HISTORY - https://waterdata.usgs.gov/nwis/dv/?site_no=01585200: 1997-2015.
The discharge for measurement 422S (August 14, 2012) was revised on February 6, 2024 based on results of Meas 537S (September 12, 2023) and analysis of theoretical flood profile.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1957 to May 1965, January 1966 to September 1987, October 1996 to current year.
GAGE - Water-stage recorder, crest-stage gages, and concrete control. Datum of gage is 278.16 ft above North American Vertical Datum of 1988. Prior to May 31, 1965, at site 40 ft upstream at gage datum 3.24 ft higher.
REMARKS - Water Year 2023: Records fair, no estimated discharges.
Water Year 2022: Records fair, except those for estimated discharges, which are poor.
Water Year 2021: Records poor, no estimated discharges.
Water Year 2020: Records fair, except those for estimated discharges, which are poor.
Water Years 2018-2019: Records poor, including those for estimated discharges.
Water Year 2017: Records fair, except those above 60 ft³/s and those for estimated discharges, which are poor.
Water Years 2014-2016: Records fair, except those above 60 ft³/s and those for estimated daily discharges, which are poor.
Water Year 2013 and prior years' accuracy statements can be found in Annual Water Data Reports.
Diurnal fluctuation (occasionally extensive) caused by unknown source upstream from station. U.S. Geological Survey satellite data-collection platform at station.
Diurnal fluctuation (occasionally extensive) caused by unknown source upstream from station. U.S. Geological Survey satellite data-collection platform at station.
