Fish Passage Improvement site 10103532

Fish Passage Site 10103532

Coordinates (dec. deg.): 55.56462°, -133.07080°
Legal Description: C073S081E02
Region: Southeast
Road Name: Big Salt Lake Road

Datum: NAD83
Quad Name / ITM: Craig C-4
AWC Stream #: 103-60-10450-2003
Stream Name: Unnamed

Elevation:

Site Comments: Near milepost 1. Beaver dam upstream 120ft then channel splits. Deep channel. Beaver dam 80ft downstream. Fish rising in downstream pool. Caught one dolly varden.Water surface upstream and downstream looks flat.

Survey Date: Jul 15, 2017

Survey SEA17-BSL15

site photos

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Culvert gradient gray
Beaver Activity
Inlet perch

Comments: Beaver dams.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated plastic)

Fish Passage Rating: Gray

Length(ft): 93.0

Inlet Type: Projecting

Outlet Type: Projecting

Corrugation Depth(in.): 2.0

Corrugation Width(in.): 5.0

Condition Rating(1-5): 4

Approach Angle: 22.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.5	3.0
Height(ft):	3.4	3.0
Apron Length(ft):
Water Depth(ft):		0.17
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Outfall Height: 0.0

Outfall Type: At Stream Grade

Constriction Ratio: 0.96

Culvert Gradient: 0.75%

Max Slope:

Max Slope Length:

Comments: Black plastic pipe. Inlet and Outlet look set too high. First resting at inlet. Water surface gradient though culvert 0.89%. Top of culvert gradient 0.98%.

Culvert Observations:

Culvert gradient gray

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Silt/Clay	Silt/Clay
Subdominant:	Organic	Organic

Stream Slope(deg.):
Stream Flow Stage:	Medium

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Upstream ordinary high water	60.0	3.50
Upstream ordinary high water	80.0	3.25
Upstream ordinary high water	110.0	4.50

Elevations

Locator ID	River Distance (ft)¹	Relative Elevation (ft)
Road Elev		99.93
D/S Water Surface Elev	0.00	93.42
D/S Grade Ctrl (Thalweg)	0.00	92.56
Outlet Culvert Top	6.00	96.41
D/S Water Surface Elev	6.00	93.43
Outlet Invert (On pipe)	6.00	93.26
Inlet Culvert Invert (On pipe)	99.00	93.96
U/S Water Surface Elev	99.00	94.26
Inlet Culvert Top	99.00	97.37
U/S Thalweg	106.00	93.11
U/S Water Surface Elev	106.00	94.26

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): 1.5
Comments: 20ft upstream, no fish caught

Gear Type: Minnow Trap (B)		Trap Duration(h): 1.7
Comments: 20ft downstream, one dolly varden captured

Fish Observations

Species: juvenile Dolly Varden		Life History:
Total Fish Observed: 1	Fish Measured: 1	Fork Lengths (mm) Min: 114 Max: 114 Mean: 114
Collected/Observed by Gear Type: Downstream Minnow Trap (1)

Photos

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