This station is operated in cooperation
New York City Department of Environmental
Lat 41°52'45.6", long 74°08'43.3"
referenced to North American Datum of 1983, Ulster County, NY,
Hydrologic Unit 02020006, on right bank at downstream side of abandoned
bridge abutment upstream from Hurley Mountain Road, 5.6 mi downstream
from Ashokan Reservoir, 1.2 mi southwest of Lomontville.
PERIOD OF RECORD.--
November 2013 to current year.
Water-stage recorder and crest-stage gage. Datum of gage
is 191.93 ft above NGVD of 1929 and 191.20 ft above NAVD of 1988
Flow from 256 mi² of drainage area regulated by
Ashokan Reservoir since Sept. 9, 1913. Water diverted from Schoharie
Creek through Shandaken Tunnel (station 01362230) since Feb. 3, 1924,
enters Esopus Creek about 12.2 mi upstream from Ashokan Reservoir.
Diversions for water supply of City of New York made from Ashokan
Reservoir (station 01363400).
Water Years 2014-18: Records fair except those for estimated daily
discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 4,300 ft³/s,
Sept. 30, 2015, gage height, 7.91 ft; minimum discharge, 2.4 ft³/s,
Oct. 3, 4, 2014, gage height, 2.01 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Flood of Apr. 3, 2005,
reached a stage of 16.68 ft, from floodmark on left bank 30 ft
downstream from gage.
PERIOD OF DAILY RECORD1.--
DISCHARGE: November 2013 to current year.
Turbidity data are collected every 15
minutes using an in-situ turbidity probe located in a 2 inch pipe about
100 ft across stream on left bank in a separate gage shelter. Daily
suspended-sediment load and concentration are derived from a regression
equation relating turbidity to suspended-sediment concentration.
EXTREMES FOR PERIOD OF DAILY
SUSPENDED-SEDIMENT CONCENTRATION: Maximum
daily mean, about 210 mg/L, Mar. 30, 2014; minimum daily mean, <1
mg/L, on many days during 2014-15 water years.
SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 770 tons, Sept. 30, 2015;
minimum daily, about 0.01 ton, Oct. 3, 2014, May 30, 2015.
1 Water-Quality Records
Peak Flow and Stage Information