Fish Passage Site 20103957
Coordinates (dec. deg.): 62.79039°, -145.44411°
Legal Description: C012N001W29
Region: South Central
Road Name: Pipeline Access Road
Datum:
Quad Name / ITM: Gulkana D-3
AWC Stream #:
Stream Name: Gillespie Creek
Elevation:
Site Comments: PLMP 635.17
Survey UPD21-TAP6
Project Supervisor: Kim Clark, ADFG
— Anchorage, AK
Observers: Andrew Kastning, Nicole Farnham
Overall Fish Passage Rating:
Tidal: No
Backwatered: No
Step Pools: No
Construction Year:
Site Observations:
- Culvert gradient red
- Damage associated with ice problems
- Hydraulic flows exceeded capacity
Comments: Evidence of streamflow's overtopping the road.. Overflow pipe above main pipe included in long profile. Submitted by Kirsti Jurica with CRWP.
Culvert Measurements
ID: 1 | Structure Type: Circular pipe (Corrugated aluminum) | Fish Passage Rating: | |||||||||||||||||||||||||||||||||||||||||
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Comments: Inlet substrate is marked armor rock. |
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Culvert Observations:
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Stream Measurements
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Stream Width Type | Distance From Crossing (ft) |
Stream Width (ft) |
---|---|---|
Upstream ordinary high water | 8.80 | |
Upstream ordinary high water | 5.70 | |
Upstream ordinary high water | 7.50 |
Elevations
Locator ID | Culvert Number |
River Distance (ft)1 |
Distance From Crossing (ft)2 |
Relative Elevation (ft) |
---|---|---|---|---|
Inlet Culvert Top (Pipe #1) | 95.00 | |||
Outlet Invert (Overflow Pipe) | 95.27 | |||
Inlet Culvert Invert (Overflow Pipe) | 95.77 | |||
Outlet Culvert Top (Overflow Pipe) | 98.31 | |||
Inlet Culvert Top (Overflow Pipe) | 98.80 | |||
Road Elev | 101.16 | |||
U/S Water Surface Elev | 0.00 | 92.54 | ||
U/S Thalweg | 0.00 | 89.22 | ||
Inlet Culvert Invert (Pipe #1) | 21.00 | 89.58 | ||
U/S Water Surface Elev | 21.00 | 92.47 | ||
D/S Water Surface Elev | 74.00 | 92.47 | ||
Top of Pipe Outlet (Pipe #1) | 74.00 | 95.22 | ||
Outlet Invert (Pipe #1) | 74.00 | 88.41 | ||
Max Pool Depth | 82.00 | 89.61 | ||
D/S Water Surface Elev | 82.00 | 92.46 | ||
D/S Tailcrest or 1st Thalweg | 94.00 | 91.51 | ||
D/S Water Surface Elev | 94.00 | 92.32 | ||
D/S Thalweg | 160.00 | 90.37 | ||
D/S Water Surface Elev | 160.00 | 91.09 | ||
D/S Thalweg | 206.00 | 88.91 | ||
D/S Water Surface Elev | 206.00 | 89.61 |
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
No fish sampling occurred during this survey.
Fish Observations
No fish observations occurred during this survey.
Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov