STATION.--03079000 CASSELMAN RIVER AT MARKLETON, PA
LOCATION.--Lat 39`51'35", long 79`13'40", Somerset County, Hydrologic Unit 05020006, on right bank at downstream side of highway bridge at Markleton, 2 mi southwest of Casselman, and 7 mi downstream from Coxes Creek.
DRAINAGE AREA.--382 square miles.
PERIOD OF RECORD.--August to September 1913 (gage heights and discharge measurements only), October 1920 to current year. Monthly discharge only for some periods, published in WSP 1305. October 1913 to September 1920 (gage heights and discharge measurements only) in reports of Water Supply Commission of Pennsylvania.
GAGE.--Water-stage recorder and heated tipping bucket precipitation gage. Datum of gage is 1,654.8 ft above North American Vertical Datum of 1988. Prior to Nov. 19, 1940, non-recording gage at same site and datum. Prior to January 3, 2024, the datum of gage was reported as 1,655.29 ft above National Geodetic Vertical Datum of 1929. Satellite telemetry at station.
COOPERATION.--Funding for the operation of this station is provided by the U.S. Army Corps of Engineers, Pittsburgh District, the Pennsylania Department of Environmental Protection and the U.S. Geological Survey.
REMARKS.--Slight diversion above station to City of Frostburg, MD, in the Potomac River Basin.

The 1-hour precipitation data for this station are temporary and will only be displayed for 120 days. Time series of 1-hour or cumulative daily values will NOT be available for retrieval following the 120-day display period. Although the instrumentation is calibrated at least once a year, the temporary classification means that documented routine inspections and other quality assurance measures are not performed that would make the data acceptable for archival, retrieval, or future use in general scientific or interpretive studies.

GAGE HEIGHTS OF IMPORTANCE.-
Supplied by NWS: Flood stage-9 ft.