Fish Passage Improvement site 20300982

Fish Passage Site 20300982

Coordinates (dec. deg.): 60.17171°, -151.44599°
Legal Description: S001N013W13
Region: South Central
Road Name: Sterling Highway

Datum: NAD83
Quad Name / ITM: Kenai A-4
AWC Stream #:
Stream Name: Corea

Elevation:

Site Comments: None

Survey Date: Jun 28, 2001

Survey KPCS1-NK017

site photos

Observers: Cecil Rich, Michael Lund, Tracy Smith

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: Culvert in good shape - appears to pass fish. First 1/3 of culvert high grad, second 2/3rd pooled.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating:

Length(ft): 75.0

Inlet Type: Projecting

Outlet Type:

Corrugation Depth(in.): 2.0

Corrugation Width(in.): 6.0

Condition Rating(1-5):

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	6.0	5.71
Height(ft):	6.0
Apron Length(ft):
Water Depth(ft):	0.54	0.46
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.0

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height: -2.25

Outfall Type:

Constriction Ratio: 1.03

Culvert Gradient: 5.07%

Max Slope:

Max Slope Length:

Culvert Observations:

None of this type

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:	Cobble	Cobble

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	6.5	12.50
Downstream ordinary high water	61.0	8.70
Downstream ordinary high water	107.0	8.00
Upstream ordinary high water	5.0	5.00
Upstream ordinary high water	21.5	7.80
Upstream ordinary high water	37.5	3.80

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
D/S Thalweg				85.56
D/S Thalweg		0.00	107.0	83.73
D/S Water Surface Elev		0.00	107.0	84.19
D/S OHW Elev		0.00	107.0	85.35
D/S Thalweg		46.00	61.0	84.54
D/S Water Surface Elev		46.00	61.0	84.87
D/S OHW Elev		46.00	61.0	85.96
D/S Water Surface Elev		100.50	6.5	85.98
D/S Tailcrest or 1st Thalweg		100.50	6.5	85.53
OHW Left Bank		100.50	6.5	86.15
OHW Left Bank		102.00	5.0	86.67
Max Pool Depth		102.00	5.0	85.56
OHW Left Bank		102.00	5.0	86.06
Outlet Thalweg	1	107.00	0.0	85.31
Outlet Rustline Height	1	107.00	0.0	87.40
Outlet Invert	1	107.00	0.0	83.35
Outlet Culvert Top	1	107.00	0.0	89.35
Road Elev		144.50		97.52
Road Elev		144.50		98.50
Inlet Culvert Top	1	182.00	0.0	93.37
Inlet Rustline Height	1	182.00	0.0	88.27
Inlet Culvert Invert	1	182.00	0.0	87.15
Inlet Thalweg	1	182.00	0.0	87.15
U/S Thalweg	1	183.00	1.0	87.17
U/S Thalweg	1	187.00	5.0	87.10
U/S Water Surface Elev	1	187.00	5.0	87.69
U/S OHW elevation	1	187.00	5.0	88.42
U/S Thalweg	1	194.00	12.0	87.35
U/S Thalweg		203.50	21.5	87.83
U/S Headwater		203.50	21.5	88.37
U/S Water Surface Elev		203.50	21.5	88.21
U/S Thalweg		219.50	37.5	88.17
U/S Water Surface Elev		219.50	37.5	88.71
U/S Headwater		219.50	37.5	89.02

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): 1.05

Gear Type: Minnow Trap (B)		Trap Duration(h): 1.1

Fish Observations

Species: adult ninespine stickleback		Life History: Resident
Total Fish Observed: 7	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap (7)

Species: adult threespine stickleback		Life History: Resident
Total Fish Observed: 4	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (3) Upstream Minnow Trap (1)

Photos

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