Fish Passage Site 60401671
Coordinates (dec. deg.): 68.16938°, -149.43684°
Legal Description: U015S012E06
Region: Arctic
Road Name: Dalton Highway
Datum: NAD83
Quad Name / ITM: Philip Smith Mts A-5
AWC Stream #:
Stream Name: Atigun River tributary
Site Comments: None
Survey Date: Aug 20, 2010
Survey EDS10-DAL11
Observers: Gillian O'Doherty, Ben Histand
Overall Fish Passage Rating: Gray
Tidal: No
Backwatered: No
Step Pools: No
Construction Year:
Site Observations:
- Culvert gradient gray
- Culvert gradient red
- Culvert sagging in middle
Comments: Trib to Atigun River. Braided channel no stream widths. several fish observed u/s and d/s of pipe 1; 2 grayling caught u/s of pipe 1 with hook and line
Culvert Measurements
| ID: 1 |
Structure Type: Circular pipe (Corrugated steel) |
Fish Passage Rating: Red |
| |
| Length(ft): 80.5 |
| Inlet Type: Projecting |
| Outlet Type: Projecting |
| Corrugation Depth(in.): 0.5 |
| Corrugation Width(in.): 2.67 |
| Condition Rating(1-5): 3 |
| Approach Angle: 9.0 |
| Sedimentation At Inlet: Yes |
| Inlet Substrate: None |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 4.7 | 4.9 |
| Height(ft): | 5.1 | 5.0 |
| Apron Length(ft): | | |
| Water Depth(ft): | | 0.73 |
| Rustline Height(ft): | 1.7 | |
| Substrate Depth(ft): | 0.0 | 0.0 |
|
| Backwatered?: No |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.0 |
| Outfall Type: At Stream Grade |
Constriction Ratio: |
| Culvert Gradient: 2.80% |
| Max Slope: |
| Max Slope Length: |
|
| |
Comments: Some flow in this pipe. Several fish observed u/s and d/s of pipe 1; 2 grayling caught u/s of pipe 1 with hook and line |
| |
Culvert Observations:
- Culvert gradient red
- Culvert sagging in middle
|
| ID: 2 |
Structure Type: Circular pipe (Corrugated steel) |
Fish Passage Rating: Gray |
| |
| Length(ft): 81.0 |
| Inlet Type: Projecting |
| Outlet Type: Projecting |
| Corrugation Depth(in.): 1.0 |
| Corrugation Width(in.): 3.0 |
| Condition Rating(1-5): 3 |
| Approach Angle: 19.0 |
| Sedimentation At Inlet: No |
| Inlet Substrate: None |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 9.9 | 9.9 |
| Height(ft): | 9.6 | 9.7 |
| Apron Length(ft): | | |
| Water Depth(ft): | | 0.0 |
| Rustline Height(ft): | 0.0 | |
| Substrate Depth(ft): | 0.0 | 0.0 |
|
| Backwatered?: No |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.0 |
| Outfall Type: At Stream Grade |
Constriction Ratio: |
| Culvert Gradient: 0.83% |
| Max Slope: |
| Max Slope Length: |
|
| |
Comments: pipe is dry |
| |
Culvert Observations:
- Culvert gradient gray
|
| ID: 3 |
Structure Type: Circular pipe (Corrugated steel) |
Fish Passage Rating: Gray |
| |
| Length(ft): 81.0 |
| Inlet Type: Projecting |
| Outlet Type: Projecting |
| Corrugation Depth(in.): 1.0 |
| Corrugation Width(in.): 3.0 |
| Condition Rating(1-5): 3 |
| Approach Angle: 19.0 |
| Sedimentation At Inlet: No |
| Inlet Substrate: None |
| Outlet Substrate: None |
|
| Inlet | Outlet |
|---|
| Width(ft): | 9.9 | 10.0 |
| Height(ft): | 9.7 | 9.7 |
| Apron Length(ft): | | |
| Water Depth(ft): | | 0.0 |
| Rustline Height(ft): | 0.0 | |
| Substrate Depth(ft): | 0.0 | 0.0 |
|
| Backwatered?: No |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.0 |
| Outfall Type: At Stream Grade |
Constriction Ratio: |
| Culvert Gradient: 0.86% |
| Max Slope: |
| Max Slope Length: |
|
| |
Comments: pipe is dry |
| |
Culvert Observations:
- Culvert gradient gray
|
| ID: 4 |
Structure Type: Circular pipe (Corrugated steel) |
Fish Passage Rating: |
| |
| Length(ft): 61.0 |
| Inlet Type: Projecting |
| Outlet Type: Projecting |
| Corrugation Depth(in.): 1.0 |
| Corrugation Width(in.): 3.0 |
| Condition Rating(1-5): 3 |
| Approach Angle: 5.0 |
| Sedimentation At Inlet: Yes |
| Inlet Substrate: Gravel |
| Outlet Substrate: Gravel |
|
| Inlet | Outlet |
|---|
| Width(ft): | 10.0 | 10.0 |
| Height(ft): | 7.6 | 7.9 |
| Apron Length(ft): | | |
| Water Depth(ft): | | 0.0 |
| Rustline Height(ft): | 0.0 | |
| Substrate Depth(ft): | 2.4 | 2.1 |
|
| Backwatered?: No |
| Baffles Present: No |
| Embedded?: Yes |
| Embedded Depth(ft): 2.1 |
| Outfall Height: 0.0 |
| Outfall Type: At Stream Grade |
Constriction Ratio: |
| Culvert Gradient: 0.66% |
| Max Slope: |
| Max Slope Length: |
|
| |
Comments: pipe is dry |
| ID: 5 |
Structure Type: Circular pipe (Corrugated steel) |
Fish Passage Rating: |
| |
| Length(ft): 61.0 |
| Inlet Type: Projecting |
| Outlet Type: Projecting |
| Corrugation Depth(in.): 1.0 |
| Corrugation Width(in.): 3.0 |
| Condition Rating(1-5): 3 |
| Approach Angle: 5.0 |
| Sedimentation At Inlet: Yes |
| Inlet Substrate: Gravel |
| Outlet Substrate: Gravel |
|
| Inlet | Outlet |
|---|
| Width(ft): | 10.0 | 10.0 |
| Height(ft): | 7.3 | 7.8 |
| Apron Length(ft): | | |
| Water Depth(ft): | | 0.0 |
| Rustline Height(ft): | 0.0 | |
| Substrate Depth(ft): | 2.7 | 2.2 |
|
| Backwatered?: No |
| Baffles Present: No |
| Embedded?: Yes |
| Embedded Depth(ft): 2.2 |
| Outfall Height: 0.0 |
| Outfall Type: At Stream Grade |
Constriction Ratio: |
| Culvert Gradient: 0.43% |
| Max Slope: |
| Max Slope Length: |
|
| |
Comments: pipe is dry |
| ID: 6 |
Structure Type: Circular pipe (Corrugated steel) |
Fish Passage Rating: Gray |
| |
| Length(ft): 61.0 |
| Inlet Type: Projecting |
| Outlet Type: Projecting |
| Corrugation Depth(in.): 1.0 |
| Corrugation Width(in.): 3.0 |
| Condition Rating(1-5): 3 |
| Approach Angle: 4.0 |
| Sedimentation At Inlet: Yes |
| Inlet Substrate: Gravel |
| Outlet Substrate: Gravel |
|
| Inlet | Outlet |
|---|
| Width(ft): | 12.0 | 12.0 |
| Height(ft): | 9.8 | 9.0 |
| Apron Length(ft): | | |
| Water Depth(ft): | | 2.0 |
| Rustline Height(ft): | 3.2 | |
| Substrate Depth(ft): | 2.2 | 3.0 |
|
| Backwatered?: No |
| Baffles Present: No |
| Embedded?: No |
| Outfall Height: 0.0 |
| Outfall Type: At Stream Grade |
Constriction Ratio: |
| Culvert Gradient: 0.64% |
| Max Slope: |
| Max Slope Length: |
|
| |
Comments: Main flow is through this pipe. 1 fish obs at pipe 6 outlet |
| |
Culvert Observations:
- Culvert gradient gray
|
Stream Measurements
| Stream Substrates | Upstream | Downstream |
|---|
| Dominant: | Gravel | Gravel |
| Subdominant: | Cobble | Cobble |
|
| Stream Slope(deg.): | |
|---|
| Stream Flow Stage: | Medium |
|---|
|
No stream width data available.
Elevations
| Locator ID |
Culvert
Number |
River
Distance (ft)1 |
Distance From
Crossing (ft)2 |
Relative
Elevation (ft) |
| Road Elev |
|
|
|
99.73 |
| Outlet Culvert Top |
4 |
0.00 |
|
99.98 |
| Outlet Culvert Top |
5 |
0.00 |
|
99.98 |
| Outlet Invert (on subs) |
5 |
0.00 |
|
92.29 |
| D/S Tailcrest or 1st Thalweg |
6 |
0.00 |
|
90.00 |
| D/S Water Surface Elev (dropping fast) |
6 |
0.00 |
|
91.43 |
| Outlet Invert (on subs) |
4 |
0.00 |
|
91.97 |
| D/S Tailcrest or 1st Thalweg (no flow) |
2 |
0.00 |
|
84.37 |
| D/S Tailcrest or 1st Thalweg (no flow) |
3 |
0.00 |
|
84.37 |
| D/S Tailcrest or 1st Thalweg |
1 |
0.00 |
|
84.54 |
| D/S Water Surface Elev |
1 |
0.00 |
|
85.21 |
| Max Pool Depth (bottom of outlet pool) |
1 |
11.00 |
|
83.66 |
| Outlet Pool Water Elev ((TWS) - water flowing fast with waves) |
6 |
11.50 |
|
91.62 |
| Outlet Invert |
6 |
12.00 |
|
89.53 |
| D/S Water Surface Elev (ws @ outlet - water flowing fast with waves) |
6 |
12.00 |
|
91.53 |
| Outlet Culvert Top |
6 |
12.00 |
|
99.21 |
| Max Pool Depth (approximate - bottom of out pool - too deep to measure) |
2 |
12.00 |
|
80.23 |
| Max Pool Depth (approximate - bottom of outlet pool - too deep to measure) |
3 |
12.00 |
|
80.23 |
| Outlet Pool Water Elev ((TWS)) |
1 |
13.00 |
|
85.23 |
| D/S Water Surface Elev (ws @ outlet) |
1 |
13.00 |
|
85.28 |
| Outlet Invert |
1 |
13.00 |
|
84.55 |
| Outlet Invert |
2 |
22.00 |
|
88.48 |
| Outlet Invert |
3 |
22.00 |
|
88.48 |
| Inlet Culvert Invert (on subs) |
4 |
61.00 |
|
92.44 |
| Inlet Culvert Top |
4 |
61.00 |
|
100.38 |
| Inlet Culvert Top |
5 |
61.00 |
|
100.43 |
| Inlet Culvert Invert (on subs) |
5 |
61.00 |
|
93.04 |
| Inlet Culvert Top |
6 |
72.50 |
|
99.60 |
| U/S Water Surface Elev (ws @ outlet) |
6 |
72.50 |
|
92.14 |
| Inlet Culvert Invert |
6 |
72.50 |
|
89.29 |
| U/S Headwater |
6 |
74.50 |
|
92.18 |
| U/S Thalweg (braids converge to one channel above this point) |
6 |
90.50 |
|
90.78 |
| U/S Water Surface Elev |
6 |
90.50 |
|
92.44 |
| Inlet Culvert Invert |
1 |
93.50 |
|
86.84 |
| U/S Water Surface Elev (ws @ inlet) |
1 |
93.50 |
|
87.60 |
| U/S Headwater |
1 |
93.50 |
|
87.61 |
| Inlet Culvert Invert |
2 |
103.00 |
|
89.15 |
| Inlet Culvert Invert |
3 |
103.00 |
|
89.18 |
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: Visual Observation, Ground (A) |
|
| Comments: Fish observed upstream and downstream. |
| |
| Gear Type: Angling (B) |
|
Fish Observations
| Species: general fish observation, no species information |
Life History: Not Recorded |
| Total Fish Observed: 1 |
Fish Measured: |
Fork Lengths (mm) Min: Max: Mean: |
| Collected/Observed by Gear Type: At Site Visual Observation, Ground (1) |
| |
| Species: adult Arctic grayling |
Life History: Resident |
| Total Fish Observed: 2 |
Fish Measured: |
Fork Lengths (mm) Min: Max: Mean: |
| Collected/Observed by Gear Type: Upstream Angling (2) |
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