Fish Passage Improvement site 20401275

Fish Passage Site 20401275

Coordinates (dec. deg.): 61.62741°, -149.31067°
Legal Description: S018N001E29
Region: South Central
Road Name: Private- Camp Challenge Christ

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Wolf Lake outlet stream

Elevation:

Site Comments: The above lat/long for this culvert are incorrect. On private property and could not be located to resurvey in 2010 or 2011.

Survey Date: Sep 13, 2000

Survey MSCS1-CT118

site photos

Observers: Edward Weiss, Doug Hill, Joe Conner

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year: 2001

Site Observations:

Constriction ratio red

Comments: New road, new culvert (set last year) (2001)

Culvert Measurements

ID: 1

Structure Type: Open-bottom arch (Corrugated Metal)

Fish Passage Rating: Gray

Length(ft): 31.0

Inlet Type: Projecting

Outlet Type: Projecting

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.67

Condition Rating(1-5):

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate: Silt/Clay

Outlet Substrate: Silt/Clay

	Inlet	Outlet
Width(ft):	3.8	4.0
Height(ft):	2.0	2.2
Apron Length(ft):
Water Depth(ft):	0.4	0.3
Rustline Height(ft):
Substrate Depth(ft):

Backwatered?:

Baffles Present: No

Embedded?: Yes

Outfall Height:

Outfall Type: At Stream Grade

Constriction Ratio: 0.32

Culvert Gradient: -0.65%

Max Slope:

Max Slope Length:

Culvert Observations:

None of this type
Constriction ratio red

Stream Measurements

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

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	50.0	8.00
Downstream ordinary high water	102.0	9.60
Upstream ordinary high water	50.0	9.50
Upstream ordinary high water	82.0	14.00

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Inlet Culvert Top	1			93.30
Outlet Culvert Top	1			93.49
D/S Thalweg		0.00	102.0	90.70
D/S Thalweg		52.00	50.0	90.99
Outlet Invert	1	102.00	0.0	91.45
Outlet Thalweg	1	102.00	0.0	91.45
Road Elev		117.50		94.49
Road Elev		117.50		95.62
Inlet Culvert Invert	1	133.00	0.0	91.25
Inlet Thalweg	1	133.00	0.0	91.25
U/S Thalweg	1	138.00	5.0	90.94
U/S Thalweg		183.00	50.0	91.20
U/S Thalweg		215.00	82.0	91.45

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): 20

Fish Observations

Species: juvenile/adult Dolly Varden		Life History: Unknown
Total Fish Observed: 8	Fish Measured: 4	Fork Lengths (mm) Min: 78 Max: 115 Mean: 104
Collected/Observed by Gear Type: Upstream Minnow Trap (8)

Photos

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov