Fish Passage Site 40501776

Coordinates (dec. deg.): 65.36994°, -146.04916°
Legal Description: F006N008E02
Region: Interior
Road Name: Steese Highway

Datum: WGS84
Quad Name / ITM: Circle B-5
AWC Stream #:
Stream Name: McManus Creek tributary

Elevation:

Site Comments: None

Survey Date: Jul 25, 2010

Survey EDS10-STS27

Observers: Ben Histand, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Outfall height red
  3. Constriction ratio gray

Comments: No minnow traps were set out because the water was too shallow. There are 2 pipes at this culvert. Most of the flow is through C1. Both pipes are slightly elevated above the stream bed.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 80.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 4.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.1 3.2
Apron Length(ft):
Water Depth(ft): 0.23
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.14
Outfall Type: Free Fall on To Rip Rap
Constriction Ratio: 0.71
Culvert Gradient: 7.14%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Constriction ratio gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 80.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 4.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.0 3.1
Apron Length(ft):
Water Depth(ft): 0.14
Rustline Height(ft):0.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.75
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.71
Culvert Gradient: 7.66%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Upstream ordinary high water 75.0 5.50
Upstream ordinary high water 106.0 6.30
Upstream ordinary high water 142.0 6.20

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev (Road Surface) 111.36
D/S Grade Ctrl (Thalweg) (Tailcrest of Small Pool Downstream) 0.00 94.69
D/S Water Surface Elev (Water Surface) 0.00 95.10
D/S Tailcrest or 1st Thalweg (Thalweg) 25.00 96.03
D/S Water Surface Elev (Water Surface) 25.00 96.26
D/S Thalweg (Thalweg) 29.00 95.01
D/S Water Surface Elev (Water Surface) 31.00 96.26
D/S Thalweg (Substrate below pipe outfall) 1 32.50 96.58
Outlet Invert (Thalweg) 2 32.50 96.87
D/S Water Surface Elev (Water Surface) 2 32.50 97.01
Outlet Invert (Bottom of Pipe) 1 32.50 97.17
D/S Water Surface Elev (Water Surface) 1 32.50 97.40
D/S Thalweg (Substrate below pipe outfall) 2 32.50 96.17
U/S Water Surface Elev (Water Surface) 2 113.00 103.12
Inlet Culvert Invert (Bottom of Pipe) 1 113.00 102.90
Inlet Culvert Invert (Bottom of Pipe) 2 113.00 103.06
U/S Water Surface Elev (Water Surface) 1 113.00 103.09
U/S Headwater (Headwater Surface) 114.00 103.12

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

Gear Type: None (A)
Comments: No traps set water too shallow.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov