Fish Passage Site 20301001

Coordinates (dec. deg.): 60.44187°, -150.31782°
Legal Description: S004N006W16
Region: South Central
Road Name: Upper Skilak Lake Campground

Datum: NAD83
Quad Name / ITM: Kenai B-1
AWC Stream #:
Stream Name: Lower Ohmer Creek

Elevation:

Site Comments: None

Survey Date: Sep 04, 2001

Survey KPCS1-NK060

Observers: Cecil Rich, William Glick, James Maple

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Shallow water in outlet and through culvert. Outlet perch (8 inches)) occasional very high flows in spring (B. Glick pers observ.). Check whether instrument 3 is needed.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 88.5
Inlet Type: Flared Inlet
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.2 6.0
Height(ft):4.55 4.6
Apron Length(ft):
Water Depth(ft):0.08 0.04
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.81
Outfall Type:
Constriction Ratio: 0.97
Culvert Gradient: 5.46%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 51.0 7.40
Downstream ordinary high water 75.0 7.00
Upstream ordinary high water 5.0 10.70
Upstream ordinary high water 35.0 6.90
Upstream ordinary high water 67.0 5.91

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S OHW Elev 0.00 75.0 82.90
D/S Thalweg 0.00 75.0 82.04
D/S Water Surface Elev 0.00 75.0 82.31
D/S Thalweg 24.00 51.0 82.67
D/S Water Surface Elev 24.00 51.0 83.29
D/S OHW Elev 24.00 51.0 84.29
D/S Water Surface Elev 65.00 10.0 86.40
OHW Left Bank 65.00 10.0 87.27
OHW Left Bank 70.00 5.0 86.46
OHW Left Bank 70.00 5.0 86.94
Max Pool Depth 70.00 5.0 85.54
D/S Thalweg 70.00 5.0 85.54
Outlet Invert 1 75.00 0.0 87.23
Outlet Thalweg 1 75.00 0.0 87.23
Outlet Rustline Height 1 75.00 0.0 87.67
Outlet Culvert Top 1 75.00 0.0 91.83
Road Elev 119.00 96.00
Road Elev 119.00 96.54
Inlet Culvert Top 1 163.00 0.0 96.61
Inlet Rustline Height 1 163.00 0.0 92.40
Inlet Thalweg 1 163.00 0.0 92.04
Inlet Culvert Invert 1 163.00 0.0 92.06
U/S Thalweg 1 164.00 1.0 91.67
U/S OHW elevation 1 168.00 5.0 93.61
U/S Thalweg 1 168.00 5.0 92.11
U/S Water Surface Elev 1 168.00 5.0 91.50
U/S Thalweg 1 175.20 12.2 94.23
U/S Thalweg 198.00 35.0 96.73
U/S Water Surface Elev 198.00 35.0 96.98
U/S Headwater 198.00 35.0 97.40
U/S Headwater 230.00 67.0 97.19
U/S Thalweg 230.00 67.0 96.29
U/S Water Surface Elev 230.00 67.0 96.34

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): 1.5

Fish Observations

Species: adult stickleback-unspecified Life History: Resident
Total Fish Observed: 51 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (38)  Upstream Minnow Trap (13)  

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