USGS Water-Year Summary 2021
01483200 BLACKBIRD CREEK AT BLACKBIRD, DE
LOCATION - Lat 39°21'58.6", long 75°40'09.8" referenced to North American Datum of 1983, New Castle County, DE, Hydrologic Unit 02040205, on left bank 15 ft downstream from highway culverts, 0.5 mi upstream from Barlow Branch, 0.6 mi southwest of Blackbird, 5.6 mi northwest of Smyrna, and 13.8 mi upstream from mouth.
DRAINAGE AREA - 4.06 mi².
REVISIONS HISTORY - WDR MD-DE-89-1: 1987-88(P).
SURFACE-WATER RECORDS
PERIOD OF RECORD - Annual maximum, water years 1952-56, and occasional low-flow measurements, water years 1952-53, 1955-56. October 1956 to current year.
GAGE - Water-stage recorder. Concrete control since May 23, 1968. Datum of gage is 17.11 ft above North American Vertical Datum of 1988. Mar. 5, 1951, to Oct. 16, 1956, nonrecording gage and crest-stage gage at site 15 ft upstream at gage datum 1.0 ft higher. Oct. 17, 1956, to June 16, 1986, recording gage at same site on right bank at gage datum 1.0 ft higher.
