Fish Passage Improvement site 20301010

Fish Passage Site 20301010

Coordinates (dec. deg.): 60.70578°, -150.86190°
Legal Description: S007N009W09
Region: South Central
Road Name: Swanson River Road, off of

Datum: NAD83
Quad Name / ITM: Kenai C-3
AWC Stream #: 247-90-10020-2036
Stream Name: Mink Creek

Elevation:

Site Comments: None

Survey Date: Sep 27, 2001

Survey KPCS1-NK082

site photos

Observers: Cecil Rich, James Maple, Jeff Davis, Tom Sigurdsson

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: Both banks D/S(but particularly LB) are undercut.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating:

Length(ft): 47.0

Inlet Type: Projecting

Outlet Type:

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 3.0

Condition Rating(1-5):

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate: Gravel

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	5.6	6.1
Height(ft):	3.56	4.29
Apron Length(ft):
Water Depth(ft):	0.48	0.67
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.33

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height: -0.43

Outfall Type:

Constriction Ratio: 0.86

Culvert Gradient: 1.89%

Max Slope:

Max Slope Length:

Culvert Observations:

None of this type

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Sand	Gravel
Subdominant:	None	Cobble

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	12.0	8.60
Downstream ordinary high water	64.0	5.30
Downstream ordinary high water	109.0	5.00
Upstream ordinary high water	5.0	6.50
Upstream ordinary high water	32.0	5.80
Upstream ordinary high water	86.0	7.20

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
D/S Thalweg		0.00	109.0	86.79
D/S Water Surface Elev		0.00	109.0	87.08
D/S OHW Elev		0.00	109.0	87.31
D/S Water Surface Elev		45.00	64.0	87.60
D/S OHW Elev		45.00	64.0	87.92
D/S Thalweg		45.00	64.0	86.44
D/S Tailcrest or 1st Thalweg		97.00	12.0	88.60
D/S Water Surface Elev		97.00	12.0	88.83
OHW Left Bank		97.00	12.0	89.69
OHW Left Bank		104.00	5.0	89.02
OHW Left Bank		104.00	5.0	89.35
Max Pool Depth		104.00	5.0	88.21
D/S Thalweg		104.00	5.0	88.21
Outlet Thalweg	1	109.00	0.0	88.25
Outlet Invert (lots of substrate)	1	109.00	0.0	87.92
Outlet Culvert Top	1	109.00	0.0	92.21
Outlet Rustline Height	1	109.00	0.0	89.33
Road Elev		132.50		96.23
Road Elev		132.50		96.27
Inlet Culvert Top	1	156.00	0.0	92.37
Inlet Rustline Height	1	156.00	0.0	89.77
Inlet Culvert Invert	1	156.00	0.0	88.81
Inlet Thalweg (lots of substrate)	1	156.00	0.0	88.81
U/S Thalweg	1	157.00	1.0	88.81
U/S Thalweg	1	161.00	5.0	88.54
U/S OHW elevation	1	161.00	5.0	89.81
U/S Water Surface Elev	1	161.00	5.0	89.31
U/S Thalweg	1	167.70	11.7	88.50
U/S Thalweg		188.00	32.0	88.79
U/S Water Surface Elev		188.00	32.0	89.40
U/S Headwater		188.00	32.0	89.90
U/S Headwater		242.00	86.0	89.73
U/S Water Surface Elev		242.00	86.0	89.46
U/S Thalweg		242.00	86.0	88.92

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): 1.25

Gear Type: Minnow Trap (B)		Trap Duration(h): 1.07

Fish Observations

Species: adult stickleback-unspecified		Life History: Resident
Total Fish Observed: 6	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap (6)

Species: juvenile coho salmon		Life History: Anadromous
Total Fish Observed: 38	Fish Measured: 16	Fork Lengths (mm) Min: 46 Max: 104 Mean: 80
Collected/Observed by Gear Type: Downstream Minnow Trap (12) Upstream Minnow Trap (26)

Species: juvenile rainbow trout		Life History: Resident
Total Fish Observed: 8	Fish Measured: 4	Fork Lengths (mm) Min: 61 Max: 150 Mean: 89
Collected/Observed by Gear Type: Downstream Minnow Trap (2) Upstream Minnow Trap (6)

Species: juvenile/adult sculpin-unspecified		Life History: Resident
Total Fish Observed: 4	Fish Measured: 2	Fork Lengths (mm) Min: 78 Max: 96 Mean: 87
Collected/Observed by Gear Type: Upstream Minnow Trap (4)

Photos

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