USGS Streamgaging Training Class, Manning's n-values--value 0.033

SURFACE-WATER FIELD TECHNIQUES

Clearwater River at Kamiah, Idaho - n = 0.033

(Source: U.S.G.S Water Supply Paper 1849)

Site Description

Reach properties

Plan sketch and cross sections

Site photos

Site Description

Station name	Clearwater River at Kamiah, Idaho
Station number	13-3390
Gage location	Lat 46°14', long 116°01', in sec. 1, T. 33 N., R. 3 E., on left bank 0.25 mile downstream from highway bridge at Kamiah, 0.75 mile downstream from Lawyer Creek, and 6 miles downstream from South Fork. Section 1 is about 5.8 miles downstream from gage.
Drainage area	4,850 sq mi, approximately.
Date of flood	May 29, 1948
Gage height	19.22 ft at gage: 46.17 ft at section 1
Peak discharge	99,000 cfs
Computed roughness coefficient	Manning n = 0.033
Description of channel	Bed is composed of gravel and boulders with some exposed bedrock. Channel is bordered by railroad on the right and highway on the left. Banks are gravel and rock and have light vegetation.

Introduction Page || Site Description || Reach Properties

Plan Sketch and Cross Sections || Site Photos

Reach Properties

Section	Area (sq ft)	Top Width (ft.)	Mean depth (ft)	Hydraulic radius (ft)	Mean velocity (ft per sec)	Lenght (ft) between sections	Fall (ft) between sections
1	11,100	562	19.25	19.45	8.92	.......	.....
2	11,603	593	19.58	19.34	8.53	732	0.35
3	10,937	538	20.32	20.04	9.05	560	.67

Introduction Page || Site Description || Reach Properties

Plan Sketch and Cross Sections || Site Photos

Plan Sketch and Cross Sections

Plan sketch and cross sections, Clearwater River at Kamiah, Idaho

Introduction Page|| Site Description || Reach Properties
Plan Sketch and Cross Sections || Site Photos

Site Photos

Photo 29: Downstream along left bank from above section 1, Clearwater River at Kamiah, Idaho.

Photo 32: Upstream from left bank at section 3, Clearwater River at Kamiah, Idaho.

Introduction Page || Site Description || Reach Properties

Plan Sketch and Cross Sections || Site Photos