Fish Passage Improvement site 10103524

Fish Passage Site 10103524

Coordinates (dec. deg.): 55.68245°, -132.88191°
Legal Description: C071S082E29
Region: Southeast
Road Name: Big Salt Lake Road

Datum: NAD83
Quad Name / ITM: Craig C-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jun 26, 2017

Survey SEA17-BSL07

site photos

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Outfall height red
Culvert gradient red

Comments: Small trickle of water. Too shallow for minnow traps. Steep, shallow upstream. Outfall over 1ft. Steeper cascade downstream. Not much habitat upstream, steep, shallow. Cedar tree in creek downstream, creek runs into a grassy meadow downstream.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 103.4

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 3.0

Condition Rating(1-5): 4

Approach Angle: 18.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.0	3.0
Height(ft):	3.0	3.0
Apron Length(ft):
Water Depth(ft):		0.09
Rustline Height(ft):	0.33
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Outfall Height: 3.47

Outfall Type: Free Fall on To Rip Rap

Constriction Ratio: 1.43

Culvert Gradient: 2.83%

Max Slope:

Max Slope Length:

Comments: Outfall falls into pool filled with gravel. Culvert miters are about 5 feet. Top of culvert length 90.4'.

Culvert Observations:

Outfall height red
Culvert gradient red

Stream Measurements

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

Stream Slope(deg.):	10.2
Stream Flow Stage:	Medium

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Upstream ordinary high water	80.0	2.50
Upstream ordinary high water	100.0	2.00
Upstream ordinary high water	120.0	1.80

Elevations

Locator ID	River Distance (ft)¹	Relative Elevation (ft)
Road Elev		112.97
D/S Grade Ctrl (Thalweg)	0.00	92.50
D/S Water Surface Elev (Cedar tree in way downstream)	0.00	92.68
Max Pool Depth	3.00	93.15
D/S Water Surface Elev	3.00	93.37
D/S Grade Ctrl (Thalweg)	7.50	94.50
D/S Water Surface Elev	7.50	94.66
Outlet Invert (on pipe)	8.00	96.75
D/S Water Surface Elev	8.00	96.84
Outlet Culvert Top	13.00	100.00
Inlet Culvert Top	107.40	102.56
Inlet Culvert Invert (on pipe)	111.40	99.62
U/S Water Surface Elev	111.40	99.71
U/S Grade Ctrl (Thalweg)	112.40	99.24
U/S Water Surface Elev	112.40	99.41
U/S Grade Ctrl (Thalweg) (Boulders)	117.40	100.42
U/S Water Surface Elev	117.40	100.74
U/S Water Surface Elev	134.40	100.56
U/S Grade Ctrl (Thalweg)	134.40	100.34
U/S Grade Ctrl (Thalweg) (LWD steps)	203.40	108.66
U/S Water Surface Elev	203.40	108.68

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.