Fish Passage Improvement site 20300990

Fish Passage Site 20300990

Coordinates (dec. deg.): 59.71386°, -151.70264°
Legal Description: S005S014W29
Region: South Central
Road Name: Sterling Highway

Datum: NAD83
Quad Name / ITM: Seldovia C-5
AWC Stream #: 244-10-10010
Stream Name: Unnamed

Elevation:

Site Comments: Beaver meadow - stream.

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-NK025

site photos

Observers: Cecil Rich, Michael Lund

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: Outlet perched 6 inches. Beaver meadow - stream.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating:

Length(ft): 84.72

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: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	4.1	4.1
Height(ft):	4.16	3.98
Apron Length(ft):
Water Depth(ft):	1.27	0.79
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.0

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height: 0.83

Outfall Type:

Constriction Ratio: 0.5

Culvert Gradient: 0.02%

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	31.0	7.70
Downstream ordinary high water	55.0	5.80
Downstream ordinary high water	74.0	6.00
Upstream ordinary high water	5.0	7.80
Upstream ordinary high water	43.0	6.70
Upstream ordinary high water	83.0	9.80

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
D/S Thalweg				82.10
D/S Thalweg		0.00	74.0	82.96
D/S OHW Elev		0.00	74.0	84.85
D/S Water Surface Elev		0.00	74.0	84.48
D/S Water Surface Elev		19.00	55.0	84.52
D/S Thalweg		19.00	55.0	83.25
D/S OHW Elev		19.00	55.0	85.02
D/S Tailcrest or 1st Thalweg		43.00	31.0	84.12
D/S Water Surface Elev		43.00	31.0	84.85
OHW Left Bank		43.00	31.0	94.06
OHW Left Bank		69.00	5.0	85.48
Max Pool Depth		69.00	5.0	82.10
OHW Left Bank		69.00	5.0	84.90
Outlet Invert	1	74.00	0.0	84.94
Outlet Thalweg	1	74.00	0.0	84.94
Outlet Rustline Height	1	74.00	0.0	85.81
Outlet Culvert Top	1	74.00	0.0	88.92
Road Elev		116.00		96.02
Road Elev		116.00		97.27
Inlet Culvert Top	1	158.00	0.0	89.12
Inlet Rustline Height	1	158.00	0.0	86.96
Inlet Culvert Invert	1	158.00	0.0	84.96
Inlet Thalweg	1	158.00	0.0	84.96
U/S Thalweg	1	159.00	1.0	84.98
U/S Thalweg	1	163.00	5.0	85.06
U/S OHW elevation	1	163.00	5.0	86.69
U/S Water Surface Elev	1	163.00	5.0	86.21
U/S Thalweg	1	166.20	8.2	85.10
U/S Thalweg		201.00	43.0	85.23
U/S Water Surface Elev		201.00	43.0	84.33
U/S Headwater		201.00	43.0	87.06
U/S Headwater		241.00	83.0	87.27
U/S Water Surface Elev		241.00	83.0	86.69
U/S Thalweg		241.00	83.0	85.94

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): 1.4

Gear Type: Minnow Trap (B)		Trap Duration(h): 1.35

Fish Observations

Species: juvenile Dolly Varden		Life History: Resident
Total Fish Observed: 10	Fish Measured: 5	Fork Lengths (mm) Min: 62 Max: 108 Mean: 84
Collected/Observed by Gear Type: Downstream Minnow Trap (4) Upstream Minnow Trap (6)

Species: juvenile coho salmon		Life History: Anadromous
Total Fish Observed: 6	Fish Measured: 3	Fork Lengths (mm) Min: 63 Max: 97 Mean: 76
Collected/Observed by Gear Type: Downstream Minnow Trap (4) Upstream Minnow Trap (2)

Photos

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