Fish Passage Site 20501461
Coordinates (dec. deg.): 62.00057°, -149.95615°
Legal Description: S022N004W14
Region: South Central
Road Name: Caswell Lakes Road
Quad Name / ITM: Talkeetna Mts A-6
AWC Stream #: 247-41-10200-2190-3020
Stream Name: Unnamed
Site Comments: None
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Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game
— Anchorage, AK
Observers: Gillian O'Doherty, Kim Clark
Overall Fish Passage Rating:
Step Pools: No
Construction Year: 2019
Comments: Low flow along the left edge of the pipe. Erosion on all slopes upstream and downstream. Poor willow survival. Damage to root wads just downstream of outlet. Erosion control materials not removed yet.
|ID: 1||Structure Type: Box culvert (Structural aluminum plate)||Fish Passage Rating:|
|ID: 2||Structure Type: Box culvert (Structural aluminum plate)||Fish Passage Rating:|
Comments: Overflow pipe, not included in rating.
No stream width data available.
|Outlet Invert (outlet of Pipe # 2)||94.62|
|Outlet Culvert Top (measurement taken on Rib)||98.54|
|Inlet Culvert Invert (Inlet of Pipe #2)||94.82|
|Inlet Culvert Top||98.71|
|D/S Thalweg (channel tie in)||0.00||89.31|
|D/S Water Surface Elev||0.00||89.76|
|D/S Thalweg (bottom of outlet riffle)||27.00||90.30|
|D/S Water Surface Elev||27.00||90.41|
|D/S Thalweg (below overflow outlet)||132.00||91.33|
|D/S Water Surface Elev||132.00||91.66|
|Outlet Invert (Outlet of Pipe #1)||188.00||92.67|
|D/S Water Surface Elev||188.00||92.82|
|Outlet Culvert Top||188.00||98.35|
|Inlet Culvert Invert (Inlet of Pipe #1)||229.20||92.91|
|U/S Water Surface Elev||229.20||93.32|
|Inlet Culvert Top||229.20||99.15|
|U/S Water Surface Elev||269.20||94.28|
|U/S Grade Ctrl (Thalweg)||344.20||96.64|
|U/S Water Surface Elev||344.20||96.81|
|U/S Water Surface Elev||357.20||96.77|
- River distance is measured continuously throughout the survey reach along the thalweg of the stream.
- Measured from each end of the crossing along the thalweg of the stream.
Fish Sampling Efforts
No fish sampling occurred during this survey.
No fish observations occurred during this survey.
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