Fish Passage Site 20601543
Coordinates (dec. deg.): 61.05783°, -151.40369°
Legal Description: S011N012W09
Region: South Central
Road Name: Tyonek Timber Road
Quad Name / ITM: Tyonek A-4
AWC Stream #:
Stream Name: Bird Lake outlet
Site Comments: Bird Lake upstream of crossing.
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Project Supervisor: Gillian O'Doherty, ADFG
Observers: Mark Eisenman, Gillian O'Doherty, Robert Pype
Overall Fish Passage Rating:
- Constriction ratio red
- Outfall height red
Comments: Culvert has blown out multiple times. Road fill observed over 600 feet downstream. This culvert has been here at least 5 years. Large fish observed downstream likely rainbow trout spawning. Downstream flattens out and becomes a marsh. Ponded upstream.
|ID: 1||Structure Type: Circular pipe (Non-corrugated metal)||Fish Passage Rating:|
Comments: Culvert set at adverse angle impounding water above culvert.
|Stream Width Type||Distance From
|Downstream ordinary high water||150.0||7.50|
|Downstream ordinary high water||200.0||6.00|
|D/S Water Surface Elev (Pool)||0.00||96.12|
|D/S Tailcrest or 1st Thalweg||10.50||95.92|
|Max Pool Depth||23.20||94.08|
|Outlet Pool Water Elev||23.20||96.26|
|D/S Thalweg (Downstream gas pipe in stream)||23.20||95.38|
|Outlet Culvert Top||25.20||100.01|
|Outlet Invert (On pipe)||25.20||97.05|
|D/S Water Surface Elev||25.20||97.28|
|Inlet Culvert Invert (On pipe)||58.50||96.68|
|U/S Water Surface Elev||58.50||97.49|
|Inlet Culvert Top||58.50||99.66|
- 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
|Gear Type: Minnow Trap (A)||Trap Duration(h): 1.0|
|Gear Type: Minnow Trap (B)||Trap Duration(h): 1.0|
|Gear Type: Visual Observation, Ground (C)|
|Species: juvenile coho salmon||Life History: Anadromous|
|Total Fish Observed: 1||Fish Measured: 1||Fork Lengths (mm) Min: 94 Max: 94 Mean: 94|
|Collected/Observed by Gear Type: Upstream Minnow Trap (1)|
|Species: adult rainbow trout||Life History: Unknown|
|Total Fish Observed: 3||Fish Measured:||Fork Lengths (mm) Min: Max: Mean:|
|Collected/Observed by Gear Type: Downstream Visual Observation, Ground (3)|
|Comments: Adults appeared to be spawning|
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