Fish Passage Site 20501504

Coordinates (dec. deg.): 62.38992°, -150.72342°
Legal Description: S027N008W34
Region: South Central
Road Name: Petersville Road

Datum: WGS84
Quad Name / ITM: Talkeetna B-2
AWC Stream #:
Stream Name: Peters Creek tributary

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-MS074

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: Yes
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Compound gradient in pipe

Comments: Two different pipes were put together to create this culvert, outlet type is CSP and inlet type is SSP. Inlet is in worse condition then the outlet due to the different in material.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 52.22
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 80.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Boulder
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 4.0
Apron Length(ft):
Water Depth(ft):0.0 0.65
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.16
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.83
Culvert Gradient: 3.54%
Max Slope:
Max Slope Length:
 

Comments: Structure type: outlet CSP, inlet SSP. Condition rateing for outlet pipe (4), condition rateing for inlet (3).
  Culvert Observations:
  1. Culvert gradient red
  2. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:OrganicSand
Stream Slope(deg.):2.27
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 23.0 2.20
Upstream ordinary high water 48.0 4.40
Upstream ordinary high water 80.0 9.80
Upstream ordinary high water 110.0 2.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.13
D/S Thalweg 0.00 88.41
D/S Water Surface Elev 0.00 88.84
D/S Thalweg 31.00 89.08
D/S Water Surface Elev 31.00 89.27
D/S Thalweg 64.00 89.76
D/S Water Surface Elev 64.00 90.32
Max Pool Depth 96.00 89.93
D/S Water Surface Elev 96.00 90.87
D/S Water Surface Elev 100.00 91.03
Outlet Invert 100.00 90.38
Outlet Culvert Top 100.00 94.86
Inlet Culvert Top 152.22 96.71
U/S Water Surface Elev 152.22 93.08
Inlet Culvert Invert 152.22 92.32
U/S Thalweg 195.22 93.06
U/S Water Surface Elev 195.22 93.60
U/S Water Surface Elev 231.22 93.72
U/S Thalweg 231.22 93.18
U/S Thalweg 262.22 93.76
U/S Water Surface Elev 262.22 94.80

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