Fish Passage Site 20504042

Coordinates (dec. deg.): 61.58346°, -149.27069°
Legal Description: S017N001E09
Region: South Central
Road Name: N. Tiffany Drive

Datum:
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10260-2019-3051
Stream Name: Wasilla Creek Tributary

Elevation:

Site Comments: None

Survey Date: Oct 19, 2023

Survey MSB23-MS119

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 60.46
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 35.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):11.5 11.6
Height(ft):6.8 6.0
Apron Length(ft):
Water Depth(ft):0.0 0.49
Rustline Height(ft):0.0
Substrate Depth(ft):1.4 1.6
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.4
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.0
Culvert Gradient: 1.29%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandGravel
Subdominant:OrganicOrganic
Stream Slope(deg.):0.74
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 40.0 16.10
Upstream ordinary high water 61.0 8.40
Upstream ordinary high water 98.0 11.50
Upstream ordinary high water 123.0 10.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 104.96
D/S Water Surface Elev 0.00 95.62
D/S Thalweg 0.00 94.88
D/S Thalweg 52.00 95.08
D/S Water Surface Elev 52.00 95.82
Outlet Invert 109.00 95.95
D/S Water Surface Elev 109.00 96.44
Outlet Culvert Top 109.00 102.07
Inlet Culvert Top 169.46 102.85
Inlet Culvert Invert 169.46 96.60
U/S Water Surface Elev 169.46 96.67
U/S Thalweg 236.46 96.45
U/S Water Surface Elev 236.46 97.18
U/S Water Surface Elev 267.46 97.37
U/S Thalweg 267.46 97.06
U/S Thalweg 292.46 97.54
U/S Water Surface Elev 292.46 97.77

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