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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
01584050 LONG GREEN CREEK AT GLEN ARM, MD
LOCATION - Lat 39°27'16.9", long 76°28'44.0" referenced to North American Datum of 1983, Baltimore County, MD, Hydrologic Unit 02060003, on right bank 0.5 mi downstream from bridge on Glen Arm Road, 0.6 mi upstream from State Highway 147 (Harford Road), 0.8 mi east of Glen Arm, and 1.6 mi upstream from mouth.
DRAINAGE AREA - 9.40 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1975 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 243.34 ft above North American Vertical Datum of 1988.
REMARKS - Water Year 2021-2022: Records good, except those above 161 ft³/s, which are fair. No estimated discharges.
Water Year 2020: Records good, except those above 100 ft³/s, which are fair. No estimated discharges.
Water Years 2017-2019: Records good, except those above 100 ft³/s, which are fair, and those for estimated discharges, which are poor.
Water Years 2014-2016: Records good, except those above 100 ft³/s, which are fair, 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.
U.S. Geological Survey satellite data-collection platform at station.
U.S. Geological Survey satellite data-collection platform at station.
