Fish Passage Improvement site 20300976

Fish Passage Site 20300976

Coordinates (dec. deg.): 60.55966°, -151.27333°
Legal Description: S005N011W06
Region: South Central
Road Name: Kenai Spur Road

Datum: NAD83
Quad Name / ITM: Kenai C-4
AWC Stream #: 244-30-10010-2001
Stream Name: Unnamed

Elevation:

Site Comments: None

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 KPCS1-NK011

site photos

Observers: Cecil Rich, Tracy Smith, Michael Lund

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: Inlet headwall damaged - seperated from main pipe. To be repaired in 2 weeks. They plan to raise outlet pool to eliminate perch also. Wetland above inlet in narrow valley. Upstream - wetland. Entire culvert replaced before tailcrest was redone.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating:

Length(ft): 230.4

Inlet Type: Headwall

Outlet Type:

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.0

Condition Rating(1-5):

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.9	3.75
Height(ft):	4.5	4.38
Apron Length(ft):
Water Depth(ft):	0.54	0.25
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.0

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height: 0.73

Outfall Type:

Constriction Ratio: 0.48

Culvert Gradient: 1.56%

Max Slope:

Max Slope Length:

Culvert Observations:

Mechanical damage or joints parting

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Silt/Clay	Gravel
Subdominant:	None	Sand

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water		7.70
Downstream ordinary high water	42.0	6.80
Downstream ordinary high water	99.0	7.00
Upstream ordinary high water	5.0	17.20
Upstream ordinary high water	38.0	8.20

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
D/S Thalweg				83.90
D/S Thalweg		0.00	99.0	84.25
D/S Water Surface Elev		0.00	99.0	85.08
D/S OHW Elev		0.00	99.0	85.75
D/S Water Surface Elev		57.00	42.0	85.98
D/S Thalweg		57.00	42.0	85.56
D/S OHW Elev		57.00	42.0	86.29
OHW Left Bank		72.50	26.5	86.50
D/S Water Surface Elev		72.50	26.5	86.15
D/S Tailcrest or 1st Thalweg		72.50	26.5	85.77
OHW Left Bank		94.00	5.0	86.27
Max Pool Depth		94.00	5.0	84.25
OHW Left Bank		94.00	5.0	86.98
Outlet Rustline Height	1	99.00	0.0	89.83
Outlet Invert	1	99.00	0.0	86.75
Outlet Thalweg	1	99.00	0.0	86.75
Outlet Culvert Top	1	99.00	0.0	91.12
Road Elev		214.00		124.10
Road Elev		214.00		126.48
Inlet Culvert Top	1	329.00	0.0	94.85
Inlet Culvert Invert	1	329.00	0.0	90.35
Inlet Thalweg	1	329.00	0.0	90.35
Inlet Rustline Height	1	329.00	0.0	91.35
U/S Thalweg	1	330.00	1.0	89.10
U/S Thalweg	1	334.00	5.0	90.04
U/S OHW elevation	1	334.00	5.0	91.56
U/S Water Surface Elev	1	334.00	5.0	91.21
U/S Thalweg	1	338.00	9.0	90.25
U/S Headwater		367.00	38.0	91.73
U/S Water Surface Elev		367.00	38.0	91.46
U/S Thalweg		367.00	38.0	90.18

Notes:

River distance is measured continuously throughout the survey reach along the thalweg of the stream.
Measured from each end of the crossing along the thalweg of the stream.

Fish Sampling Efforts

Gear Type: Minnow Trap (A)		Trap Duration(h): 1.92

Gear Type: Minnow Trap (B)		Trap Duration(h): 1.95

Fish Observations

Species: adult stickleback-unspecified		Life History: Resident
Total Fish Observed: 8	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (8)

Species: juvenile Chinook salmon		Life History: Anadromous
Total Fish Observed: 41	Fish Measured: 16	Fork Lengths (mm) Min: 70 Max: 109 Mean: 82
Collected/Observed by Gear Type: Downstream Minnow Trap (29) Upstream Minnow Trap (12)

Species: juvenile coho salmon		Life History: Anadromous
Total Fish Observed: 32	Fish Measured: 14	Fork Lengths (mm) Min: 64 Max: 85 Mean: 74
Collected/Observed by Gear Type: Downstream Minnow Trap (24) Upstream Minnow Trap (8)

Photos

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