Fish Passage Site 40501759

Coordinates (dec. deg.): 65.21872°, -147.01031°
Legal Description: F005N004E31
Region: Interior
Road Name: Steese Highway

Datum: WGS84
Quad Name / ITM: Livengood A-1
AWC Stream #:
Stream Name:

Elevation:

Site Comments: This culvert is about 110' downstream from STS09.

Survey Date: Jul 13, 2010

Survey EDS10-STS10

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. Compound gradient in pipe
  3. Road bank erosion

Comments: This culvert appears to have a large amount of animal trapping occuring downstream, lot of old buckets and garbage D/S.This culvert is about 110' downstream from STS09. There is an obvious compound gradient in this pipe, but it was also not possible to get inside the pipe to measure it. No minnow traps were set out because the water was too shallow.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 186.1
Inlet Type: Headwall
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 22.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.6 5.0
Height(ft):4.5 4.8
Apron Length(ft):
Water Depth(ft): 0.41
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.2
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.98
Culvert Gradient: 9.14%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Compound gradient in pipe
  3. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:BoulderBoulder
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Upstream ordinary high water 50.0 5.20
Upstream ordinary high water 75.0 3.80
Upstream ordinary high water 96.0 5.70

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
U/S Grade Ctrl (Thalweg) (Thalweg) 0.00 81.61
U/S Water Surface Elev (Water Surface) 0.00 81.89
Inlet Culvert Invert (Bottom of Pipe - Headwater @ invert in) 22.00 79.32
U/S Water Surface Elev (Water Surface) 22.00 79.65
Outlet Invert (Bottom of Pipe) 208.10 62.31
D/S Water Surface Elev (Water Surface) 208.10 62.72
Max Pool Depth (Substrate) 211.10 61.80
Outlet Pool Water Elev (Water Surface) 211.10 62.52
D/S Tailcrest or 1st Thalweg (Substrate) 214.10 62.34
D/S Water Surface Elev (Water Surface) 214.10 62.44
D/S Grade Ctrl (Thalweg) (Thalweg) 240.10 58.90
D/S Water Surface Elev (Water Surface) 240.10 59.10

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. No fish observed.

Fish Observations

No fish observations occurred during this survey.

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