Fish Passage Site 20300988
Coordinates (dec. deg.): 59.77374°, -151.83112°
Legal Description: S005S015W04
Region: South Central
Road Name: Sterling Highway
Datum: NAD83
Quad Name / ITM: Seldovia D-5
AWC Stream #: 244-10-10010-2011
Stream Name: Anchor River North Fork
Site Comments: Culvert washed out in 2002
Survey Date: Jul 04, 2001
Survey KPCS1-NK023
Observers: Cecil Rich, Michael Lund
Overall Fish Passage Rating: Gray
Tidal: No
Backwatered: No
Step Pools:
Construction Year:
Comments: Large (2.5 ft above water level) 30' wide by 50' long mid-channel bar 6ft above culverts. 4 culverts in headwall. Some erosion on ends at outlet. Raw embankment on outlet with a few willows. Should be a bridge on this river. Culvert washed out in 2002
Culvert Measurements
| ID: 1 |
Structure Type: Closed-bottom arch (Strutural Metal Plate) |
Fish Passage Rating: |
| |
| Length(ft): 183.7 |
| Inlet Type: Headwall |
| Outlet Type: |
| Corrugation Depth(in.): 2.0 |
| Corrugation Width(in.): 6.0 |
| Condition Rating(1-5): |
| Approach Angle: |
| Sedimentation At Inlet: |
| Inlet Substrate: None |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 7.9 | 7.8 |
| Height(ft): | 8.54 | 8.58 |
| Apron Length(ft): | | |
| Water Depth(ft): | 0.63 | 2.27 |
| Rustline Height(ft): | | |
| Substrate Depth(ft): | 0.0 | 0.0 |
|
| Backwatered?: |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.04 |
| Outfall Type: |
Constriction Ratio: 0.52 |
| Culvert Gradient: 1.48% |
| Max Slope: |
| Max Slope Length: |
|
| |
Culvert Observations:
- None of this type
|
| ID: 2 |
Structure Type: Closed-bottom arch (Strutural Metal Plate) |
Fish Passage Rating: |
| |
| Length(ft): 183.7 |
| Inlet Type: Headwall |
| Outlet Type: |
| Corrugation Depth(in.): 2.0 |
| Corrugation Width(in.): 6.0 |
| Condition Rating(1-5): |
| Approach Angle: |
| Sedimentation At Inlet: |
| Inlet Substrate: Cobble |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 7.9 | 7.8 |
| Height(ft): | | 8.66 |
| Apron Length(ft): | | |
| Water Depth(ft): | 2.5 | 2.5 |
| Rustline Height(ft): | | |
| Substrate Depth(ft): | | 0.0 |
|
| Backwatered?: |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.04 |
| Outfall Type: |
Constriction Ratio: 0.52 |
| Culvert Gradient: |
| Max Slope: |
| Max Slope Length: |
|
| |
Culvert Observations:
- None of this type
|
| ID: 3 |
Structure Type: Closed-bottom arch (Strutural Metal Plate) |
Fish Passage Rating: |
| |
| Length(ft): 183.7 |
| Inlet Type: Headwall |
| Outlet Type: |
| Corrugation Depth(in.): 2.0 |
| Corrugation Width(in.): 6.0 |
| Condition Rating(1-5): |
| Approach Angle: |
| Sedimentation At Inlet: |
| Inlet Substrate: Cobble |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 7.9 | 7.8 |
| Height(ft): | | 8.35 |
| Apron Length(ft): | | |
| Water Depth(ft): | 1.77 | 1.69 |
| Rustline Height(ft): | | |
| Substrate Depth(ft): | | 0.0 |
|
| Backwatered?: |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.04 |
| Outfall Type: |
Constriction Ratio: 0.52 |
| Culvert Gradient: |
| Max Slope: |
| Max Slope Length: |
|
| |
Culvert Observations:
- None of this type
|
| ID: 4 |
Structure Type: Closed-bottom arch (Strutural Metal Plate) |
Fish Passage Rating: |
| |
| Length(ft): 183.7 |
| Inlet Type: Headwall |
| Outlet Type: |
| Corrugation Depth(in.): 2.0 |
| Corrugation Width(in.): 6.0 |
| Condition Rating(1-5): |
| Approach Angle: |
| Sedimentation At Inlet: |
| Inlet Substrate: None |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 7.9 | 7.8 |
| Height(ft): | 8.52 | 8.64 |
| Apron Length(ft): | | |
| Water Depth(ft): | 0.67 | 2.21 |
| Rustline Height(ft): | | |
| Substrate Depth(ft): | 0.0 | 0.0 |
|
| Backwatered?: |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.04 |
| Outfall Type: |
Constriction Ratio: 0.52 |
| Culvert Gradient: 1.63% |
| Max Slope: |
| Max Slope Length: |
|
| |
Culvert Observations:
- None of this type
|
Stream Measurements
| Stream Substrates | Upstream | Downstream |
|---|
| Dominant: | Gravel | Boulder |
| Subdominant: | Cobble | Cobble |
|
| Stream Slope(deg.): | |
|---|
| Stream Flow Stage: | |
|---|
|
| Stream Width Type |
Distance From
Crossing (ft) |
Stream
Width (ft) |
| Downstream ordinary high water |
72.0 |
32.70 |
| Downstream ordinary high water |
158.0 |
32.30 |
| Downstream ordinary high water |
215.0 |
34.00 |
| Upstream ordinary high water |
5.0 |
65.00 |
| Upstream ordinary high water |
89.0 |
63.50 |
| Upstream ordinary high water |
258.0 |
58.30 |
Elevations
| Locator ID |
Culvert
Number |
River
Distance (ft)1 |
Distance From
Crossing (ft)2 |
Relative
Elevation (ft) |
| D/S Thalweg |
|
|
|
78.56 |
| D/S Thalweg |
|
0.00 |
215.0 |
80.90 |
| D/S Water Surface Elev |
|
0.00 |
215.0 |
82.48 |
| D/S OHW Elev |
|
0.00 |
215.0 |
82.73 |
| D/S OHW Elev |
|
57.00 |
158.0 |
82.90 |
| D/S Water Surface Elev |
|
57.00 |
158.0 |
82.69 |
| D/S Thalweg |
|
57.00 |
158.0 |
80.98 |
| D/S Tailcrest or 1st Thalweg |
|
143.00 |
72.0 |
82.29 |
| D/S Water Surface Elev |
|
143.00 |
72.0 |
83.48 |
| OHW Left Bank |
|
143.00 |
72.0 |
87.33 |
| OHW Left Bank |
|
210.00 |
5.0 |
83.40 |
| OHW Left Bank |
|
210.00 |
5.0 |
84.65 |
| Max Pool Depth |
|
210.00 |
5.0 |
80.20 |
| Outlet Invert |
1 |
215.00 |
0.0 |
81.21 |
| Outlet Thalweg |
1 |
215.00 |
0.0 |
81.21 |
| Outlet Invert |
4 |
215.00 |
0.0 |
81.23 |
| Outlet Thalweg |
4 |
215.00 |
0.0 |
81.23 |
| Outlet Invert |
2 |
215.00 |
0.0 |
81.40 |
| Outlet Thalweg |
2 |
215.00 |
0.0 |
81.40 |
| Outlet Invert |
3 |
215.00 |
0.0 |
81.71 |
| Outlet Thalweg |
3 |
215.00 |
0.0 |
81.71 |
| Outlet Rustline Height |
4 |
215.00 |
0.0 |
83.87 |
| Outlet Rustline Height |
1 |
215.00 |
0.0 |
84.79 |
| Outlet Rustline Height |
3 |
215.00 |
0.0 |
84.83 |
| Outlet Rustline Height |
2 |
215.00 |
0.0 |
85.00 |
| Outlet Culvert Top |
1 |
215.00 |
0.0 |
89.79 |
| Outlet Culvert Top |
4 |
215.00 |
0.0 |
89.87 |
| Outlet Culvert Top |
2 |
215.00 |
0.0 |
90.06 |
| Outlet Culvert Top |
3 |
215.00 |
0.0 |
90.06 |
| Road Elev |
|
306.50 |
|
132.64 |
| Road Elev |
|
306.50 |
|
134.72 |
| Inlet Culvert Top |
1 |
398.00 |
0.0 |
92.47 |
| Inlet Culvert Top |
4 |
398.00 |
0.0 |
92.74 |
| Inlet Culvert Top |
2 |
398.00 |
0.0 |
90.04 |
| Inlet Culvert Top |
3 |
398.00 |
0.0 |
90.04 |
| Inlet Rustline Height |
1 |
398.00 |
0.0 |
85.97 |
| Inlet Rustline Height |
3 |
398.00 |
0.0 |
86.31 |
| Inlet Rustline Height |
4 |
398.00 |
0.0 |
86.37 |
| Inlet Rustline Height |
2 |
398.00 |
0.0 |
86.39 |
| Inlet Culvert Invert |
1 |
398.00 |
0.0 |
83.93 |
| Inlet Thalweg |
1 |
398.00 |
0.0 |
83.93 |
| Inlet Culvert Invert |
4 |
398.00 |
0.0 |
84.22 |
| Inlet Thalweg |
4 |
398.00 |
0.0 |
84.22 |
| Inlet Thalweg |
2 |
398.00 |
0.0 |
81.89 |
| Inlet Thalweg |
3 |
398.00 |
0.0 |
82.62 |
| U/S Thalweg |
2 |
399.00 |
1.0 |
81.08 |
| U/S Thalweg |
3 |
399.00 |
1.0 |
83.52 |
| U/S Thalweg |
4 |
399.00 |
1.0 |
84.02 |
| U/S Thalweg |
1 |
399.00 |
1.0 |
82.83 |
| U/S Thalweg |
1 |
403.00 |
5.0 |
82.91 |
| U/S Thalweg |
4 |
403.00 |
5.0 |
84.20 |
| U/S Thalweg |
3 |
403.00 |
5.0 |
83.87 |
| U/S Water Surface Elev |
3 |
403.00 |
5.0 |
84.43 |
| U/S Water Surface Elev |
2 |
403.00 |
5.0 |
84.49 |
| U/S Water Surface Elev |
1 |
403.00 |
5.0 |
84.52 |
| U/S Thalweg |
2 |
403.00 |
5.0 |
82.10 |
| U/S OHW elevation |
1 |
403.00 |
5.0 |
86.06 |
| U/S Water Surface Elev |
4 |
403.00 |
5.0 |
84.97 |
| U/S Thalweg |
2 |
414.00 |
16.0 |
86.02 |
| U/S Thalweg |
3 |
414.00 |
16.0 |
86.72 |
| U/S Thalweg |
4 |
414.00 |
16.0 |
84.24 |
| U/S Thalweg |
1 |
414.00 |
16.0 |
83.93 |
| U/S Headwater |
|
487.00 |
89.0 |
86.89 |
| U/S Water Surface Elev |
|
487.00 |
89.0 |
86.24 |
| U/S Thalweg |
|
487.00 |
89.0 |
84.77 |
| U/S Thalweg |
|
656.00 |
258.0 |
86.14 |
| U/S Water Surface Elev |
|
656.00 |
258.0 |
87.33 |
| U/S Headwater |
|
656.00 |
258.0 |
87.79 |
Notes:
- 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): 5.1 |
| |
| Gear Type: Minnow Trap (B) |
Trap Duration(h): 4.4 |
Fish Observations
| Species: juvenile Dolly Varden |
Life History: Resident |
| Total Fish Observed: 2 |
Fish Measured: 1 |
Fork Lengths (mm) Min: 157 Max: 157 Mean: 157 |
| Collected/Observed by Gear Type: Downstream Minnow Trap (2) |
| |
| Species: juvenile Chinook salmon |
Life History: Anadromous |
| Total Fish Observed: 24 |
Fish Measured: 12 |
Fork Lengths (mm) Min: 43 Max: 58 Mean: 49 |
| Collected/Observed by Gear Type: Downstream Minnow Trap (4) Upstream Minnow Trap (20) |
| |
| Species: juvenile coho salmon |
Life History: Anadromous |
| Total Fish Observed: 39 |
Fish Measured: 16 |
Fork Lengths (mm) Min: 45 Max: 81 Mean: 54 |
| Collected/Observed by Gear Type: Downstream Minnow Trap (12) Upstream Minnow Trap (27) |
Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov
