Fish Passage Site 20301002

Coordinates (dec. deg.): 60.43968°, -150.32016°
Legal Description: S004N006W16
Region: South Central
Road Name: Upper Skilak Campground Road

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-NK061

Observers: Cecil Rich, William Glick, James Maple

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Open-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 52.0
Inlet Type: Mitered
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Boulder
Outlet Substrate: Boulder
InletOutlet
Width(ft):9.7 9.8
Height(ft):3.84 4.12
Apron Length(ft):
Water Depth(ft):0.33 0.13
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 3.09
Outfall Type:
Constriction Ratio: 1.32
Culvert Gradient: 0.90%
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 10.0 7.80
Downstream ordinary high water 50.0 7.30
Downstream ordinary high water 83.0 6.00
Upstream ordinary high water 5.0 9.50
Upstream ordinary high water 46.0 6.60
Upstream ordinary high water 58.0 8.10

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 83.0 89.31
D/S OHW Elev 0.00 83.0 90.33
D/S Water Surface Elev 0.00 83.0 90.33
D/S Thalweg 33.00 50.0 90.92
D/S Water Surface Elev 33.00 50.0 91.35
D/S OHW Elev 33.00 50.0 92.48
D/S Tailcrest or 1st Thalweg 73.00 10.0 85.42
D/S Water Surface Elev 73.00 10.0 85.97
OHW Left Bank 73.00 10.0 87.08
OHW Left Bank 78.00 5.0 87.03
Max Pool Depth 78.00 5.0 85.84
D/S Thalweg 78.00 5.0 85.84
OHW Left Bank 78.00 5.0 85.05
Outlet Culvert Top 1 83.00 0.0 92.13
Outlet Invert 1 83.00 0.0 88.01
Outlet Thalweg 1 83.00 0.0 88.01
Road Elev 109.00 94.51
Road Elev 109.00 94.57
Inlet Culvert Top 1 135.00 0.0 92.32
Inlet Culvert Invert 1 135.00 0.0 88.48
Inlet Thalweg 1 135.00 0.0 88.48
U/S Thalweg 1 136.00 1.0 88.30
U/S Thalweg 1 140.00 5.0 88.92
U/S Water Surface Elev 1 140.00 5.0 89.07
U/S OHW elevation 1 140.00 5.0 89.73
U/S Thalweg 1 154.50 19.5 89.86
U/S Thalweg 181.00 46.0 90.42
U/S Headwater 181.00 46.0 92.25
U/S Water Surface Elev 181.00 46.0 91.38
U/S Thalweg 193.00 58.0 91.50
U/S Water Surface Elev 193.00 58.0 92.00
U/S Headwater 193.00 58.0 92.69

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): 1.0
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.3

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 39 Fish Measured: 19 Fork Lengths (mm) Min: 71 Max: 160 Mean: 105
Collected/Observed by Gear Type: Downstream Minnow Trap (18)  Upstream Minnow Trap (21)  
 
Species: adult stickleback-unspecified Life History: Resident
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 6 Fish Measured: 3 Fork Lengths (mm) Min: 60 Max: 70 Mean: 64
Collected/Observed by Gear Type: Downstream Minnow Trap (6)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 20 Fish Measured: 10 Fork Lengths (mm) Min: 71 Max: 157 Mean: 91
Collected/Observed by Gear Type: Downstream Minnow Trap (8)  Upstream Minnow Trap (12)  

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