Esopus Creek at Coldbrook, N.Y


Study Reach.--Section 1 is 400 ft upstream from gage.

Gage Location.--Lat 42°00'45", long 76°16'10", on left bank at downstream side of highway bridge at Cold brook, Ulster County, 1.5 miles upstream from Ashokan Reservoir and 2.5 miles south of Mount Tremper.

Drainage Area.--192 sq mi.

Gage Datum and Elevations of Reference Points.--Not available.

Stage, Discharge Measurements and Computed n-Values.--Gage heights were 12.39 ft at gage; 14.0 ft at section 1. Peak discharges was 13,900 cfs on Mar. 22, 1948.

Date of Observation Discharge (ft3/s) Average Cross Section Area (ft2) Hydraulic Radius (ft) Mean Velocity (ft/s) Slope Coefficient of Roughness n
5/22/1948 13866.2 1465.0 8.13 9.47 0.004457 0.043
3/22/1948 13935.9 1594.5 5.51 8.74 0.003397 0.030

Description of Channel.--Bed material ranges from coarse gravel to a few large boulders. Banks are lined with boulders and scattered trees and brush.

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