Crossing CL128
Clear and Foster Creek 2002 Fish Passage Assessment
Watershed: Clear Creek
Stream: T Clear Ck.
Road: off Springwater
Latitude: 45.376101635
Longitude: -122.4764693835
Elevation: 218 ft
Ownership: County
Fish Presence: fish present
Survey date: 07/30/2002
Crossing Description
Type: round culvert
Condition: +10.0 years left
Diameter: 66.0 in
Length: 31.0 ft
Crossing slope: -7.1 %
Avg. embedded: no material
Inlet design: non-mitered
Backwater drop: + 1.2 ft
Inlet elev: -0.2 ft
Avg. fill height: 7.4 ft
Road armor: gravel
Habitat Description
Channel habitat type: moderate gradient, moderately confined
Catchment acreage: 880
Avg. channel slope: 1.6%
Avg. bankfull width: 5.0 ft
Dist from Clackamas R.: 2.2 miles
Upstream fish-bearing length: 2.8 miles
Dominant channel substrate: none recorded
Comments: Altered streambed for 6-7 feet downstream. Saw red-legged frog. Solution – Inverted slope and slack water creates passable conditions at least for adults. Round culvert, embedded, 31 ft long. Could also be retrofited with downstream backwatering.
Prioritization and Cost Information
Fish passage: partial
Habitat priority: 30
Habitat and cost priority: 10
Fix solution: culvert w/ simulated streambed
Span: 6.0 ft
Material: metal
Design $3,500
Materials $4,099
Install $4,325
Contingencies $3,577
Total $15,501.00