Fish Passage Site 40401782

Coordinates (dec. deg.): 65.69106°, -144.39314°
Legal Description: F010N016E15
Region: Interior
Road Name: Steese Highway

Datum: WGS84
Quad Name / ITM: Circle C-1
AWC Stream #:
Stream Name:

Elevation:

Site Comments: None

Survey Date: Jul 27, 2010

Survey EDS10-STS33

Observers: Ben Histand, Justin Leon

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: An Arctic Grayling was seen in an outlet pool downstream of this culvert. Upstream of this culvert is stagnant deep water. Downstream widths were used for this reason. This culvert is has 2 pipes. C1 appears to have a compound gradient, but it was not able to be deternined.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 51.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 4
Approach Angle: 2.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.9 6.0
Height(ft):6.0 6.1
Apron Length(ft):
Water Depth(ft): 0.19
Rustline Height(ft):1.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.81
Culvert Gradient: -0.98%
Max Slope:
Max Slope Length:
 

Comments: May possilby have a compound gradient, but it could not be discerned at the time of the survey.
ID: 2 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 51.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 4
Approach Angle: 2.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.9 5.9
Height(ft):6.2 6.3
Apron Length(ft):
Water Depth(ft): 0.41
Rustline Height(ft):1.3
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.81
Culvert Gradient: 0.06%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 116.0 9.80
Downstream ordinary high water 158.0 12.20
Downstream ordinary high water 181.0 10.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 100.36
D/S Grade Ctrl (Thalweg) (Thalweg) 0.00 91.60
D/S Water Surface Elev (Water Surface) 0.00 91.93
D/S Water Surface Elev (Water Surface) 14.00 92.01
D/S Tailcrest or 1st Thalweg (Thalweg) 14.00 91.70
Max Pool Depth (Max Pool Depth) 52.00 89.62
D/S Water Surface Elev (Water Surface) 66.00 92.01
D/S Water Surface Elev (Water Surface) 1 67.00 92.01
D/S Water Surface Elev (Water Surface) 2 67.00 92.01
Outlet Invert (Bottom of Pipe) 2 67.00 91.60
Outlet Invert (Bottom of Pipe) 1 67.00 91.82
Inlet Culvert Invert (Bottom of Pipe) 2 118.10 91.63
Inlet Culvert Invert (Bottom of Pipe) 1 118.10 91.32
U/S Headwater (Water Surface = Headwater Surface) 1 118.10 92.11
U/S Water Surface Elev (Water Surface) 2 118.10 92.11

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: Minnow Trap (A) Trap Duration(h): 1.0
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Visual Observation, Ground (C)
Comments: Graying observed in ponds D/S.

Fish Observations

Species: Arctic grayling Life History: Resident
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Visual Observation, Ground (1)  
 
Species: no fish collected or observed Life History: Not Applicable
Total Fish Observed: 0 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (0)  Upstream Minnow Trap (0)  

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