Study Reach.--Section 1 is 75 ft downstream from gage.
Gage Location.--Lat 40°39'33", long 96°39'39", in SW1/4 sec.17, T.8N., R.7E., on left bank 15 ft downstream from highway bridge at west edge of Roca.
Drainage Area.--174 sq mi.
Gage Datum and Elevations of Reference Points.--Not available.
Stage, Discharge Measurements and Computed n-Values.--Gage heights were 16.02 ft at gage; 15.94 ft at section 1. Peak discharges was 1,860 cfs. on May 2, 1954.
Date of Observation | Discharge (ft3/s) | Average Cross Section Area (ft2) | Hydraulic Radius (ft) | Mean Velocity (ft/s) | Slope | Coefficient of Roughness n |
---|---|---|---|---|---|---|
5/2/1954 | 1853.2 | 506.0 | 6.28 | 3.66 | 0.000560 | 0.030 |
Description of Channel.--Bed consists of sand and clay. Banks are generally smooth and are free of vegetal growth during floods.