Clear and Foster Creek 2002 Fish Passage Assessment


Watershed: Clear Creek

Stream: T Clear Ck.

Road: Clear Ck. Rd.

Latitude: 45.2980136596

Longitude: -122.4080723297

Elevation: 360 ft

Ownership: County

Fish Presence: fish present

Survey date: 06/26/2002


Crossing Description

Type: pipe arch

Condition: 10.0 years left

Diameter: 36.0 x 60.0 in

Length: 40.0 ft

Crossing slope: 2.0 %

Backwater drop: + 1.8 ft

Avg. fill height: 4.6 ft

Habitat Description

Channel habitat type: moderately steep, narrow valley

Catchment acreage: 431

Avg. channel slope: 3.9%

Avg. bankfull width: 6.0 ft

Dist from Clackamas R.: 12.8 miles

Upstream fish-bearing length: 1.1 miles

Dominant channel substrate: none recorded

Comments: Natural fish barrier below. Could probably make this a passable culvert by backwatering with some weirs. Scouring on outlet end. Solution – Because of moderate length and moderate jump and slope this would probably not provide adult fish passage. Round culvert, embedded 45 ft long, placed at 3.5% grade. County estimate based on open box culvert.

Prioritization and Cost Information

Fish passage: no

Habitat priority: 51

Habitat and cost priority: 59

Fix solution: culvert w/ simulated streambed

Span: 7.0 ft

Material: metal

Design NA

Materials NA

Install NA

Contingencies NA

Total $72,500.00