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.