Fish Passage Site 20501398

Coordinates (dec. deg.): 62.33782°, -150.57411°
Legal Description: S026N007W16
Region: South Central
Road Name: Petersville Road

Datum: NAD83
Quad Name / ITM: Talkeetna B-2
AWC Stream #: 247-41-10200-2081-3194
Stream Name: Seventeen Mile Creek

Elevation:

Site Comments: None

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey MSB23-MS079

Project Supervisor: Michael Mazzacavallo, Alaska Department of Fish and Game — Anchorage, AK
Observers: Michael Mazzacavallo, Kat Leavitt, Beth Evers

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Culvert gradient red
  3. Compound gradient in pipe
  4. Outfall height gray
  5. Woody Debris

Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 61.72
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 3
Approach Angle: 5.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):4.95 5.3
Height(ft):5.07 4.8
Apron Length(ft):
Water Depth(ft):0.0 0.2
Rustline Height(ft):3.67
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.19
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.61
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: 3 pipes put together compound gradient within pipe.Top outlet side damaged, hangs 1ft into culvert outlet opening.
  Culvert Observations:
  1. Constriction ratio gray
  2. Culvert gradient red
  3. Compound gradient in pipe
  4. Outfall height gray
  5. Woody Debris

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:OrganicOrganic
Stream Slope(deg.):1.59
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bed width 40.0 10.90
Upstream ordinary high water 56.0 7.70
Upstream ordinary high water 82.0 7.10
Upstream ordinary high water 94.0 7.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 44.00 91.56
D/S Water Surface Elev 44.00 92.40
Max Pool Depth (Pool thalweg) 100.00 92.03
Outlet Pool Water Elev (Pool water surface) 100.00 92.38
Outlet Culvert Top 103.00 97.61
Outlet Invert 103.00 92.37
D/S Water Surface Elev 103.00 90.66
D/S Thalweg 103.00 91.18
D/S Water Surface Elev (Culvert water surface) 103.00 92.57
Inlet Culvert Invert 164.72 92.66
Inlet Culvert Top 164.72 96.67
U/S Water Surface Elev 164.72 94.30
U/S Water Surface Elev 243.72 94.60
U/S Thalweg 243.72 94.15
U/S Thalweg 284.72 94.76
U/S Water Surface Elev 284.72 95.18

Notes:

  1. River distance is measured continuously throughout the survey reach along the thalweg of the stream.
  2. 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