Study Reach.--Section 1 is about 600 ft downstream from gage.
Gage Location.--Lat 45°44', long 114°17', in NE1/4 NW1/4 sec.26, T.1S., R.22W., on right bank 0.5 mile downstream from Painted Rocks Lake, 6 miles upstream from Nez Perce Creek, and 16 miles southwest of Conner.
Drainage Area.--317 sq mi.
Gage Datum and Elevations of Reference Points.--Not available.
Stage, Discharge Measurements and Computed n-Values.--Gage heights were 6.08 ft at gage; 3.27 ft at section 1. Peak discharges was 3,880 cfs. on May 29, 1948.
Date of Observation | Discharge (ft3/s) | Average Cross Section Area (ft2) | Hydraulic Radius (ft) | Mean Velocity (ft/s) | Slope | Coefficient of Roughness n |
---|---|---|---|---|---|---|
5/29/1948 | 3880.9 | 504.7 | 4.67 | 7.69 | 0.004618 | 0.036 |
Description of Channel.--Bed is gravel and boulders; d50 = 172 m, d84 = 265 mm. The left bank is lined with overhanging bushes. The right bank is lined with trees.