);

CROSSING CL030 / CV6684

Clear and Foster Creek 2002 Fish Passage Assessment

CL030out

Watershed: Clear Creek

Stream: T Clear Ck.

Road: Hillockburn

Latitude: 45.2111015789

Longitude: -122.2761328576

Elevation: 1414 ft

Ownership: County

Fish Presence: fish present

Survey date: 06/12/2002

Crossing Description

Type: round culvert

Condition: 10.0 years left

Diameter: 24.0 in

Length: 74.0 ft

Crossing slope: 0.4 %

Backwater drop: + 1.3 ft

Inlet elev: +0.4 ft

Avg. fill height: 7.6 ft

Habitat Description

Channel habitat type: Moderate gradient, moderately confined

Catchment acreage: 145.0

Avg. channel slope: 4.9%

Avg. bankfull width: 4.0 ft

Distance from Clackamas R.: 26.9 miles

Upstream fish-bearing length: 1022 ft

Dominant channel substrate: none recorded

Comments: Heavy debris at inlet. Moss on downstream scour plate. Wide valley. Culvert transverse to road. There were nine road measurements. Solution – Extreme length. Pipe arch or round with 71 ft long. County estimate based on box culvert.

Prioritization and Cost Information

Fish passage: no

Habitat priority: 66

Habitat and cost priority: 71

Fix solution: culvert w/ simulated streambed

Span: 5.0 ft

Material: metal

Design NA

Materials NA

Install NA

Contingencies NA

Total $95,000.00