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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
03078000 CASSELMAN RIVER AT GRANTSVILLE, MD
LOCATION - Lat 39°42'07.9", long 79°08'11.0" referenced to North American Datum of 1983, Garrett County, MD, Hydrologic Unit 05020006, on left bank at downstream side of highway bridge, 0.3 mi upstream from Slaubaugh Run, 0.7 mi downstream from U.S. Highway 40, and 1.0 mi northeast of Grantsville.
DRAINAGE AREA - 64.2 mi².
REVISIONS HISTORY -
WSP 1143: 1948.
https://waterdata.usgs.gov/nwis/inventory/?site_no=03078000&agency_cd=USGS (2021): Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1947 to current year.
GAGE - Water-stage recorder, crest-stage gage, and concrete control. Datum of gage is 2,088.56 ft above North American Vertical Datum of 1988.
REMARKS - Water Years 2017-2023: Records good, except those for estimated discharges, which are poor.
Water Years 2014-2016: Records good, 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.
Slight diurnal fluctuation at low flow from unknown source upstream of station. U.S. Army Corps of Engineers satellite data-collection platform at station.
Slight diurnal fluctuation at low flow from unknown source upstream of station. U.S. Army Corps of Engineers satellite data-collection platform at station.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - October 1993 to September 1994, October 2010 to current year.
INSTRUMENTATION - Weighing cell precipitation gage.
EXTREMES FOR PERIOD OF RECORD - Maximum daily precipitation, 4.58 in., September 01, 2021.
REMARKS - Gaps in record indicate missing or erroneous data. Records estimated as zero are based on confirmation with nearby U.S. Geological Survey and National Weather Service sites that zero precipitation occurred on those days. Gage is operated in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District. USACE satellite data-collection platform at station.
