Fish Passage Site 20504063

Coordinates (dec. deg.): 62.04491°, -150.06035°
Legal Description: S023N004W32
Region: South Central
Road Name: Parks Hwy

Datum:
Quad Name / ITM: Talkeetna A-1
AWC Stream #:
Stream Name: Susitna River Tributary

Elevation:

Site Comments: None

Survey Date: Oct 06, 2023

Survey MSB23-MS091

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray

Comments: Stream rip rap built upstream and downstream culvert connecting, two wetland areas.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 137.7
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 6.0
Corrugation Width(in.): 2.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):4.9 4.7
Height(ft):3.75 3.88
Apron Length(ft):4.2 7.2
Water Depth(ft):0.0 1.01
Rustline Height(ft):0.4
Substrate Depth(ft):0.35 1.3
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 1.3
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.84%
Max Slope:
Max Slope Length:
 

Comments: Mittered length: inlet 4.20ft, outlet 7.20ft.
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):0.71
Stream Flow Stage:High

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Thalweg 10.00 88.42
D/S Water Surface Elev 10.00 88.74
D/S Water Surface Elev (Pond water surface) 20.00 89.38
Inlet Culvert Invert 20.00 87.91
U/S Water Surface Elev (Culvert water surface) 20.00 88.16
Inlet Culvert Top 20.00 91.78
D/S Water Surface Elev 157.70 87.55
Outlet Culvert Top 157.70 90.63
Outlet Invert 157.70 86.54
D/S Thalweg 177.70 86.94
D/S Water Surface Elev 177.70 87.54
D/S Thalweg 187.70 86.13
D/S Water Surface Elev 187.70 87.48

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