--WSP 726: Drainage area. WDR MD-DE-75-1:
Discharge for Measurement 385 made on 06/25/2021 was revised
on 09/22/2021 due to an error in computation.
PERIOD OF RECORD.
--March 1930 to current year.
--Water-stage recorder, crest-stage gage, and concrete
control. Datum of gage is 37.20 ft above North American Vertical Datum
of 1988. Prior to June 7, 1930, nonrecording gage, and June 7, 1930 to
Jan. 22, 1965, water-stage recorder at site 1 mi upstream on right bank
at same gage datum.
--Diversions since June 1959. U.S. Geological Survey
satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD.
--Maximum discharge, 484,000
/s, Mar. 19, 1936, gage height, 28.1 ft, at site then in
use; minimum discharge, 66 ft3
/s, Sept. 9, 1966. Minimum
daily discharge observed at gaging station, 121 ft3
9, 1966, does not include diversion of 489 ft3
municipal use; minimum daily discharge (adjusted), 601
/s, Sept. 10, 1966, includes diversion of 449
/s for municipal use.
EXTREMES OUTSIDE PERIOD OF RECORD.
--Flood of June 2, 1889, was
of approximately the same magnitude as that of March 19, 1936.
--Funding for the operation of this station is
provided by the U.S. Geological Survey. Access to gage site provided by
the Baltimore District, U.S. Army Corps of Engineers.