Fish Passage Site 20504055

Coordinates (dec. deg.): 61.65215°, -149.89410°
Legal Description: S018N003W18
Region: South Central
Road Name: Parks Highway

Datum: WGS84
Quad Name / ITM: Anchorage C-8
AWC Stream #: 247-41-10100-2231-3018-4011
Stream Name: Unnamed Lake Creek Tributarry

Elevation:

Site Comments: None

Survey Date: Sep 28, 2023

Survey MSB23-MS071

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Mechanical damage or joints parting

Comments: Thaw pipe in culvert. Small contributing stream on inlet side.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 128.94
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 4
Approach Angle: 10.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Sand
InletOutlet
Width(ft):3.95 3.84
Height(ft):3.95 4.25
Apron Length(ft):6.3 6.3
Water Depth(ft):0.0 0.81
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.99
Culvert Gradient: 3.10%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleSand
Subdominant:OrganicOrganic
Stream Slope(deg.):2.39
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)
Road Elev 101.66
D/S Water Surface Elev 0.00 89.27
D/S Thalweg 0.00 88.71
D/S Water Surface Elev 54.00 89.48
D/S Thalweg 54.00 89.11
D/S Water Surface Elev 91.00 89.53
Outlet Invert 91.00 88.72
Outlet Culvert Top 91.00 92.94
U/S Water Surface Elev 219.94 93.10
Inlet Culvert Invert 219.94 92.88
Inlet Culvert Top 219.94 96.88
U/S Thalweg 233.94 93.43
U/S Water Surface Elev 233.94 93.77
U/S Thalweg 243.94 94.06
U/S Water Surface Elev 243.94 94.35
U/S Thalweg 251.94 94.45
U/S Water Surface Elev 251.94 94.81
U/S Thalweg 263.94 94.88
U/S Water Surface Elev 263.94 95.16
U/S Thalweg 295.94 95.32
U/S Water Surface Elev 295.94 96.12
U/S Water Surface Elev 313.94 96.34
U/S Thalweg 313.94 95.78

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