Fish Passage Site 40501706

Coordinates (dec. deg.): 65.50604°, -148.58565°
Legal Description: F008N005W21
Region: Interior
Road Name: Elliott Highway

Datum: NAD83
Quad Name / ITM: Livengood C-4
AWC Stream #:
Stream Name: Livengood Creek

Elevation:

Site Comments: Note Livengood Creek Bridge is actually about 500 feet down the highway. Mile Post 70. DOT#'s 3677+22, 3677+42

Survey Date: Jun 30, 2010

Survey EDS10-ELH21

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Road bank erosion
  3. Constriction ratio gray

Comments: 2 large culverts. Looks like culverts were embedded at least at one time. Pipe Gradient is Red, Water gradient is gray.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 158.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Boulder
InletOutlet
Width(ft):10.0 9.7
Height(ft):8.6 8.1
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.1
Rustline Height(ft):2.6
Substrate Depth(ft):1.1 1.6
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.67
Culvert Gradient: 2.44%
Max Slope:
Max Slope Length:
 

Comments: This site might be embedded. It appears to have been constructed as an embedded culvert complex.
  Culvert Observations:
  1. Culvert gradient red
  2. Road bank erosion
  3. Constriction ratio gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 158.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Boulder
InletOutlet
Width(ft):10.0 9.8
Height(ft):9.2 8.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.2
Rustline Height(ft):2.8
Substrate Depth(ft):0.5 1.8
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.67
Culvert Gradient: 2.41%
Max Slope:
Max Slope Length:
 

Comments: Note this culvert looks like it was once embedded.
  Culvert Observations:
  1. Culvert gradient red
  2. Road bank erosion
  3. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleSilt/Clay
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 204.0 25.00
Upstream ordinary high water 355.0 21.20
Upstream ordinary high water 503.0 16.60

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 108.72
D/S Grade Ctrl (Thalweg) (Thalweg) 0.00 89.47
D/S Water Surface Elev 0.00 91.33
D/S Grade Ctrl (Thalweg) (thalweg) 48.00 91.69
D/S Water Surface Elev 48.00 92.81
D/S Water Surface Elev 2 72.00 92.95
D/S Water Surface Elev 1 72.00 93.01
D/S Tailcrest or 1st Thalweg 1 72.00 92.79
D/S Tailcrest or 1st Thalweg 2 72.00 92.79
D/S Water Surface Elev (Water Surface at outlet) 1 78.00 93.02
D/S Water Surface Elev (Water Surface at outlet) 2 78.00 93.02
Outlet Invert (On Substrate) 2 78.00 91.82
Outlet Invert (On Substrate) 1 78.00 91.92
Outlet Culvert Top (top of pipe) 1 78.00 99.87
Outlet Culvert Top (top of pipe) 2 78.00 99.97
Inlet Culvert Top (Top of pipe) 1 237.00 103.75
Inlet Culvert Top (top of pipe) 2 237.00 103.79
Inlet Culvert Invert (On Substrate) 1 237.00 95.33
Inlet Culvert Invert (on substrate) 2 237.00 94.46
U/S Water Surface Elev (Water surface at inlet) 2 237.00 96.11
U/S Water Surface Elev (Water surface at linlet) 1 237.00 96.12
U/S Thalweg (Substrate) 2 238.00 94.40
U/S Headwater (Water Surface.) 2 238.00 96.10
U/S Thalweg (Substrate) 1 240.00 95.40
U/S Headwater (Water Surface) 1 240.00 96.17
U/S Water Surface Elev 249.00 96.70
U/S Grade Ctrl (Thalweg) 249.00 95.33
U/S Grade Ctrl (Thalweg) 339.00 96.82
U/S Water Surface Elev 339.00 97.10
U/S Water Surface Elev 418.00 97.30
U/S Grade Ctrl (Thalweg) 418.00 96.95

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 (B) Trap Duration(h): 2.8
Channel Type: Main Channel (>50% of water flow)
Comments: No fish caught or observed.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.8
Channel Type: Main Channel (>50% of water flow)
Comments: No fish caught or observed.

Fish Observations

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