Funding for this site is provided by:
42°24'11", long 76°26'06" referenced to North
American Datum of 1983, Tompkins County, NY, Hydrologic Unit 04140201,
on left bank at bridge on German Cross Road, 3.4 mi southeast of
Ithaca, at Bethel Grove.
PERIOD OF RECORD.--
March 1995 to current year.
Water-stage recorder. Datum of gage is 759.74 ft above
NGVD of 1929 (VERTCON) and 759.26 ft above NAVD of 1988.
Water Years 2014-16: Records fair except those for estimated daily
discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 6,200 ft³/s,
Jan. 19, 1996, gage height, 9.78 ft, from rating curve extended above
2,700 ft³/s on basis of slope-area measurement at gage height 8.26 ft;
minimum discharge, 1.5 ft³/s, Aug. 2, 1995.
PERIOD OF DAILY RECORD1.--
CONCENTRATION: October 1996 to September 1998. SUSPENDED-SOLIDS
DISCHARGE: October 1996 to September 1998. SUSPENDED-SEDIMENT
CONCENTRATION: December 1998 to current year. SUSPENDED-SEDIMENT
DISCHARGE: December 1998 to current year.
Automatic water sampler since
Periodic water-quality samples were
collected by personnel from the City of Ithaca Department of Public
Works (Water and Sewer Division) and Tompkins County Soil and Water
Conservation District. Samples were analyzed by personnel from the City
of Ithaca Department of Public Works (Water and Sewer Division).
EXTREMES FOR PERIOD OF RECORD1.--
CONCENTRATION: Maximum daily mean, 1,480 mg/L, Nov. 8, 1996; minimum
daily mean, 1 mg/L, many days during the 1998 water year.
SUSPENDED-SOLIDS DISCHARGE: Maximum daily, 7,050 tons, Nov. 8, 1996;
minimum daily, 0.02 tons, several days in October 1997 and September
1998. SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 7,190 mg/L,
June 27, 2006; minimum daily mean, less than or equal to 1 mg/L on many
days in 2004-05, 2007-15. SUSPENDED-SEDIMENT DISCHARGE: Maximum daily,
17,200 tons, June 27, 2006; minimum daily, 0.01 tons on August 1,
1 Water-Quality Records
Peak Flow and Stage Information