USGS Water-Year Summary 2021
01582500 GUNPOWDER FALLS AT GLENCOE, MD
LOCATION - Lat 39°32'58.9", long 76°38'10.0" referenced to North American Datum of 1983, Baltimore County, MD, Hydrologic Unit 02060003, on right, downstream wingwall of bridge on Glencoe Road at intersection of Upper Glencoe Road and Lower Glencoe Road in Glencoe, and 0.7 mi upstream from Piney Creek.
DRAINAGE AREA - 160 mi².
- WDR MD-DE-89-1: 1985(M).
PERIOD OF RECORD - October 1977 to June 1980, December 1982 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 244.13 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - October 2015 to October 2020.
PERIOD OF DAILY RECORD - October 2015 to October 2020.
INSTRUMENTATION - Water quality monitor, October 2015 to October 2020.
EXTREMES FOR PERIOD OF DAILY RECORD
Turbidity FTS: Maximum 2,097 NTU, April 6, 2017; Minimum 0.00 NTU, multiple occurrences recorded, first occurrence on December 3, 2017.
Turbidity EXO: Maximum 1,020 NTU, July 22, 2020; Minimum 0.10 NTU, multiple occurrences recorded, first occurrence on July 20, 2020.