Fish Passage Site 20501422

Coordinates (dec. deg.): 62.15563°, -150.09995°
Legal Description: S024N005W24
Region: South Central
Road Name: PARKS Highway

Datum: NAD83
Quad Name / ITM: Talkeetna A-1
AWC Stream #:
Stream Name: Susitna River tributary

Elevation:

Site Comments: SUSITNA RIVER WATERSHED

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 MSB11-PRK12

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Abraham Gioffre, Jim Latham

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray
  2. Compound gradient in pipe
  3. Beaver Activity
  4. Inlet perch
  5. Mechanical damage or joints parting

Comments: Upst water surface is very still with a marsh and a grate at the inlet with a beaver dam built around it. The beaver dam at the inlet creates an inlet perch and difficulty getting accurate inlet pipe measurements. Dwst of the outlet is a beaver dam approximately 150' dwst. No stream measurements taken due to having a marsh upst and a beaver impoundment dwst.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 111.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: Silt/Clay
Outlet Substrate: None
InletOutlet
Width(ft):5.1 5.0
Height(ft):5.2 5.1
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.02
Rustline Height(ft):4.1
Substrate Depth(ft):1.0 1.02
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.00%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
  2. Compound gradient in pipe
  3. Beaver Activity
  4. Inlet perch
  5. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:GravelGravel
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)
D/S Water Surface Elev 0.00 87.80
D/S Thalweg (profile pt in glide) 0.00 85.72
Outlet Invert (invert on pipe) 8.00 86.80
Outlet Culvert Top 8.00 91.87
D/S Water Surface Elev (outlet water surface) 8.00 87.82
Road Elev 98.00 97.93
U/S Water Surface Elev (water surface iin pipe at inlet dwst of beaver dam) 119.90 88.82
U/S Headwater 119.90 88.86
Inlet Culvert Top (No inlet invert taken due to beaver dam and grate at inlet) 119.90 93.01
U/S Thalweg (profile pt in marsh) 128.90 87.63
U/S Water Surface Elev 128.90 88.86

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