Fish Passage Site 40501770

Coordinates (dec. deg.): 65.29395°, -146.54861°
Legal Description: F005N006E05
Region: Interior
Road Name: Old Steese Highway

Datum: WGS84
Quad Name / ITM: Circle B-6
AWC Stream #:
Stream Name: Caribou Creek

Elevation:

Site Comments: This is an old culvert on the Old Steese Highway.

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 EDS10-STS21

Observers: Ben Histand, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Culvert gradient red
  3. Structural Problem
  4. Road bank erosion

Comments: This is an old culvert on the Old Steese Highway. The outlet is torn at the top and it is bent in on the left side. The road appears to be washing out. After the survey was complete there were 2 char seen swimming in the outlet pool.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Red
 
Length(ft): 40.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 3.8
Apron Length(ft):
Water Depth(ft): 0.44
Rustline Height(ft):2.1
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.17
Outfall Type: Hydraulic Jump
Constriction Ratio: 0.29
Culvert Gradient: 1.44%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert gradient red
  3. Structural Problem
  4. Road bank erosion

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 92.0 16.10
Upstream ordinary high water 185.0 11.30
Upstream ordinary high water 230.0 13.60

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 101.69
D/S Grade Ctrl (Thalweg) (Head of Riffle on Main Flow Downstream) 0.00 95.41
D/S Water Surface Elev (Water Surface) 0.00 95.58
D/S Water Surface Elev (Water Surface) 44.00 96.60
D/S Tailcrest or 1st Thalweg (Thalweg) 44.00 96.24
D/S Thalweg (Bottom of Outlet Pool) 59.00 94.96
D/S Water Surface Elev (Tailwater Surface) 64.50 96.60
D/S Water Surface Elev (Water Surface) 65.00 96.77
D/S Thalweg (Calm Water) 65.00 96.05
Outlet Invert (Bottom of Pipe) 65.00 96.33
Inlet Culvert Invert (Bottom of Pipe) 105.40 95.75
U/S Water Surface Elev (Water Surface) 105.40 96.91
U/S Headwater (Headwater Water Surface) 105.40 96.91

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): 1.67
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.67
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Visual Observation, Ground (C)

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)  
 
Species: Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Visual Observation, Ground (2)  

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