Fish Passage Site 20303743

Coordinates (dec. deg.): 60.56728°, -151.18916°
Legal Description: S006N011W34
Region: South Central
Road Name: Akiak Road

Datum: NAD83
Quad Name / ITM: Kenai C-4
AWC Stream #: 244-30-10010-2007
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jul 12, 2017

Survey KEN17-AR01

Observers: Elise Idle, Maggie Schaffer

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: Maybe

Step Pools: No
Construction Year:


Comments: Culvert information and assessment data collected and submitted by USFWS. Predominantly standing water with lots of woody debris. Stream gradient begins 70 feet upstream. Groundwater upwelling was present at this site. Older culvert was present 8 feet from the culvert, was completely submerged. Lot's of small fish upstream. Long Water surface looks flat through culvert and this site is most likely backwatered from photos. Rated black from lack of information.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft):
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):
Height(ft):
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: Maybe
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Inlet submerged. Culvert measurements not recorded.
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 53.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Silt/Clay
Outlet Substrate: Silt/Clay
InletOutlet
Width(ft):3.5 3.5
Height(ft):3.5 3.1
Apron Length(ft):
Water Depth(ft): 0.7
Rustline Height(ft):1.7
Substrate Depth(ft):0.1 0.4
Backwatered?: Maybe
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.06%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:OrganicOrganic
Stream Slope(deg.):0.07
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water
Upstream ordinary high water
Upstream ordinary high water
Upstream ordinary high water

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 95.39
D/S Tailcrest or 1st Thalweg 0.00 95.94
D/S Water Surface Elev 0.00 96.01
D/S Water Surface Elev 25.00 96.03
D/S Tailcrest or 1st Thalweg 25.00 95.18
D/S Water Surface Elev 52.00 96.04
D/S Thalweg 52.00 94.45
D/S Grade Ctrl (Thalweg) (End of pool) 77.00 95.03
D/S Water Surface Elev (End of pool) 77.00 95.08
D/S Water Surface Elev 90.00 96.07
Outlet Invert 90.00 95.43
Outlet Culvert Top 90.00 98.49
Inlet Culvert Top 143.00 98.52
U/S Water Surface Elev 143.00 96.15
Inlet Culvert Invert 143.00 95.15
U/S Grade Ctrl (Thalweg) (Beginning of pool) 158.00 94.68
U/S Water Surface Elev (Beginning of pool) 158.00 95.89

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): 1.5
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0

Fish Observations

Species: stickleback-unspecified Life History:
Total Fish Observed: 4 Fish Measured: 4 Fork Lengths (mm) Min: 26 Max: 37 Mean: 32
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  Upstream Minnow Trap (3)  

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