Fish Passage Site 20303804

Coordinates (dec. deg.): 60.54239°, -151.16998°
Legal Description: S005N011W11
Region: South Central
Road Name: Beaver Loop Road

Datum: NAD83
Quad Name / ITM: Kenai C-4
AWC Stream #: 244-30-10010-2015
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: May 18, 2018

Survey KEN18-BLR01

Observers: Maggie Harings, Tyler Barber, John Lowin

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: Culvert assessment and photos submitted by the Kenai Watershed Forum. Stream has been ditched upstream and downstream from culvert.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 61.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.625
Condition Rating(1-5): 3
Approach Angle: 27.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.98 3.0
Height(ft):3.13 2.9
Apron Length(ft):
Water Depth(ft): 0.18
Rustline Height(ft):0.9
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: 0.56
Culvert Gradient: 1.52%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:OrganicSilt/Clay
Stream Slope(deg.):1.1
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 44.0 4.00
Upstream ordinary high water 71.0 4.00
Upstream ordinary high water 120.0 8.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 105.25
D/S Water Surface Elev 0.00 94.13
D/S Thalweg 0.00 94.64
D/S Thalweg 23.00 94.96
D/S Water Surface Elev 23.00 95.40
D/S Thalweg 70.00 95.79
D/S Water Surface Elev 70.00 96.07
D/S Water Surface Elev 90.00 96.38
D/S Tailcrest or 1st Thalweg 90.00 96.01
D/S Water Surface Elev 96.00 96.39
Max Pool Depth 96.00 94.75
Outlet Invert (on pipe) 98.00 96.96
D/S Water Surface Elev 98.00 97.14
Outlet Culvert Top 98.00 99.98
Inlet Culvert Top 159.00 100.95
Inlet Culvert Invert (on pipe) 159.00 97.89
U/S Water Surface Elev 159.00 98.30
U/S Water Surface Elev 175.00 98.34
U/S Thalweg 175.00 97.76
U/S Water Surface Elev (Stream gradient lower) 186.50 98.45
U/S Grade Ctrl (Thalweg) 186.50 98.09
U/S Grade Ctrl (Thalweg) 319.00 99.54
U/S Water Surface Elev (Stream gradient upper) 319.00 99.91

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): 3.5
Comments: Trap set about 86 feet upstream.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 3.6666667
Comments: Trap set about 10 feet downstream

Fish Observations

Species: threespine stickleback Life History: Resident
Total Fish Observed: 74 Fish Measured: 16 Fork Lengths (mm) Min: 58 Max: 85 Mean: 78
Collected/Observed by Gear Type: Downstream Minnow Trap (74)  
 
Species: ninespine stickleback Life History: Resident
Total Fish Observed: 3 Fish Measured: 3 Fork Lengths (mm) Min: 47 Max: 60 Mean: 54
Collected/Observed by Gear Type: Downstream Minnow Trap (3)  

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