Monitoring location Wills Creek Near Cumberland, MD - USGS-01601500

LOCATION.-- On right bank at downstream side of railway bridge, 0.15 mi downstream from Braddock Run, 2.0 mi upstream from Cumberland, and mouth. PERIOD OF RECORD.-- May 1905 to July 1906 (published as "at Cumberland"). October 1929 to current year. GAGE.-- Water-stage recorder and crest-stage gage. Datum of gage is 640.46 ft above North American Vertical Datum of 1988. May 6, 1905, to July 14, 1906, nonrecording gage at highway bridge 700 ft upstream at different datum. Oct. 18, 1929, to Mar. 17, 1936, water-stage recorder, and Apr. 1, 1936, to Mar. 19, 1937, nonrecording gage at site 200 ft upstream at present gage datum. REMARKS.-- Records include drainage from numerous active and abandoned coal mines. Groundwater flow is diverted into the basin from the Georges Creek basin by Hoffman Drainage Tunnel (see station 01601420, continuous record, July 2015 to July 2021). Miscellaneous measurements of discharge from the Hoffman Drainage Tunnel have been made in water years 1944, 1964-65, 1967-82, and 1984 by the U.S. Geological Survey, and in water years 1958 and 1959 by the Maryland Geological Survey. Slight diurnal fluctuation at low flow caused by quarry upstream.