Fish Passage Site 20401331

Coordinates (dec. deg.): 61.61438°, -149.20885°
Legal Description: S018N001E26
Region: South Central
Road Name: North 49th State Street

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019-3066-4022
Stream Name: Wasilla 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 MSB11-49S01

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray
  2. Structural Problem
  3. Sediment accumulation
  4. Mechanical damage or joints parting
  5. Culvert sagging in middle
  6. Culvert is poorly aligned

Comments: Upstream area ponded marsh with lillies and lowland area. Observed a dead 4" Dolly Varden approx 75' dwst. Pipe is abrubtly angled in middle of road which did not permit viewing through. Pipe distance measured with tape and is approximate.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 107.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.25
Condition Rating(1-5): 3
Approach Angle: 5.0
Sedimentation At Inlet: Yes
Inlet Substrate: Organic
Outlet Substrate: Organic
InletOutlet
Width(ft):2.35 2.45
Height(ft):2.2 1.82
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.53
Rustline Height(ft):1.0
Substrate Depth(ft):0.2 0.63
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.72
Culvert Gradient: 0.70%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
  2. Structural Problem
  3. Sediment accumulation
  4. Mechanical damage or joints parting
  5. Culvert sagging in middle
  6. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:OrganicCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 51.0 3.70
Downstream ordinary high water 110.0 3.00
Downstream ordinary high water 147.0 3.10

Elevations

No elevation data available.

Fish Sampling Efforts

Gear Type: Visual Observation, Ground (A)
Comments: Dead Dolly varden observed about 75 feet downstream from culvert.

Fish Observations

Species: carcass Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Visual Observation, Ground (1)  

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