--01574700 INDIAN ROCK DAM NEAR YORK, PA
--Lat 39`55'22", long
76`45'14", York County, Hydrologic Unit 02050306, at dam on
Codorus Creek, 0.1 mi upstream from mouth of South Branch Codorus
Creek, 0.3 mi west of York Water Co. pumping station, and 3.0 mi
southwest of York.
--93.7 square miles.
PERIOD OF RECORD.
--September 1962 to current year in
reports of Geological Survey, September 1942 August 1962 in files of
Baltimore District, U.S. Army Corps of Engineers.
--Water-stage recorder and heated tipping bucket
precipitation gage. Datum of gage is U.S. Army Corps of Engineers local
project datum. Prior to water year 2007, the datum was incorrectly
reported as NGVD 1929. Satellite telemetry at station.
--Reservoir formed by an earth and rockfill
dam with ungated concrete spillway at elevation 435.00 ft (capacity,
28,000 acre-ft). Reservoir completed in June 1942; storage began in
June 1946. No dead storage. Reservoir is used for flood control. Flood
storage is regulated by three vertical- lift tractor gates. Water is
stored only during high flows and released when downstream conditions
|The 15-minute 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.
--Funding for the operation of this
station is provided by the U.S. Army Corps of Engineers, Baltimore
District and the U.S. Geological Survey.