The 15-minute precipitation data for this
station are temporary and will only be displayed for 120 days.
Although the instrumentation is calibrated at least once/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 this site is provided by:
42°23'45", long 77°43'08" referenced to North
American Datum of 1927, Steuben County, NY, Hydrologic Unit 02050104,
1,000 ft upstream from Arkport Dam, 1.3 mi west of Arkport, and 2.3 mi
upstream from small tributary.
PERIOD OF RECORD.--
January 1951 to September 1968 (daily
elevations at 2400 and month-end contents), October 1968 to September
1985 (daily mean elevations and month-end contents), October 1985 to
May 1991 (month-end elevations and contents), October 2011 to current
year (daily mean elevations). Month-end elevations and contents not
published June 1991 to September 2011. Records for this period are
available in the files of the U.S. Geological Survey.
WSP 1552: 1951-57. WRD NY 1974: 1973.
Water-stage recorder. Datum of gage is NGVD of
1929. To convert elevations to NAVD of 1988, subtract 0.43
Reservoir is formed by earthfill dam with concrete
spillway, completed by Corps of Engineers in 1940 for flood control;
first used for flood regulation on Mar. 31, 1940. Initial usable
capacity, 7,936 acre-ft between elevations 1,218.0 ft (sill of conduit)
and 1,304.0 ft (crest of spillway). No dead storage. Figures given
herein represent usable contents. The flood control works consist of a
pressure conduit and a side-channel spillway and are not provided with
gates. Water is stored during high flows and released gradually.
Reservoir contents unknown since 1992 as a result of periodic dredging.
Minimum recordable elevation, 1227.35 ft.
EXTREMES FOR PERIOD OF RECORD.--
Maximum contents, 7,944 ac-ft,
June 23, 1972, elevation 1,304.04; minimum contents not
Peak Flow and Stage Information
NAVD 1988 Datum Conversion Information