Fish Passage Site 20501055

Coordinates (dec. deg.): 61.59752°, -149.67761°
Legal Description: S017N002W05
Region: South Central
Road Name: Meadow Lakes Drive

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Seymore Lake Drainage

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-MS117

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. Constriction ratio gray
  2. Other, including vibrations, cavitation, etc.

Comments: Landowner stated that he has observed stickleback fish in inlet pond and or juvenile. Outlet has waterfall and deep scouring. Inlet fed by pond.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 41.96
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Sand
Outlet Substrate: Cobble
InletOutlet
Width(ft):2.15 2.1
Height(ft):2.05 2.0
Apron Length(ft):
Water Depth(ft):0.0 0.64
Rustline Height(ft):0.75
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 3.52
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.56
Culvert Gradient: 5.30%
Max Slope:
Max Slope Length:
 

Comments: Outlet bent, warped
  Culvert Observations:
  1. Constriction ratio gray
  2. Other, including vibrations, cavitation, etc.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicCobble
Subdominant:Silt/ClayOrganic
Stream Slope(deg.):6.82
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 20.0 5.30
Downstream ordinary high water 71.0 5.10
Downstream ordinary high water 106.0 5.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.50
U/S Water Surface Elev 0.00 98.53
U/S Water Surface Elev 3.00 98.51
U/S Thalweg 3.00 97.39
Inlet Culvert Invert 4.00 97.89
U/S Water Surface Elev 4.00 98.46
Inlet Culvert Top 4.00 99.28
Outlet Culvert Top 45.96 97.79
Outlet Invert 45.96 95.36
D/S Water Surface Elev 45.96 96.00
Max Pool Depth 49.96 92.01
D/S Water Surface Elev 49.96 92.48
D/S Thalweg 116.96 89.29
D/S Water Surface Elev 116.96 89.89
D/S Thalweg 151.96 87.58
D/S Water Surface Elev 151.96 88.16

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