Fish Passage Improvement site 20401349

Fish Passage Site 20401349

Coordinates (dec. deg.): 61.66123°, -149.19296°
Legal Description: S018N001E12
Region: South Central
Road Name: Crabb Circle

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019-3087
Stream Name: Spring Creek

Elevation:

Site Comments: None

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 MSCS1-WA045

site photos

Observers: Edward Weiss, Olof Jacobsson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating: Red

Length(ft): 50.0

Inlet Type: Projecting

Outlet Type:

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.67

Condition Rating(1-5):

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate: Gravel

Outlet Substrate: Gravel

	Inlet	Outlet
Width(ft):	4.0	4.0
Height(ft):	4.0	4.0
Apron Length(ft):
Water Depth(ft):	1.0	1.1
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.3

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height:

Outfall Type:

Constriction Ratio: 0.29

Culvert Gradient: 0.38%

Max Slope:

Max Slope Length:

Culvert Observations:

None of this type

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:

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

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	65.0	11.00
Downstream ordinary high water	90.0	11.00
Upstream ordinary high water	50.0	14.00
Upstream ordinary high water	130.0	14.00

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
U/S Thalweg				90.42
Outlet Culvert Top	1			92.04
Inlet Culvert Top	1			92.72
D/S Thalweg		0.00	65.0	88.82
D/S Thalweg		34.00	31.0	89.32
D/S Thalweg		63.50	1.5	7.90
Outlet Invert	1	65.00	0.0	88.47
Outlet Thalweg	1	65.00	0.0	88.67
Road Elev		90.00		94.25
Road Elev		90.00		94.88
Inlet Thalweg	1	115.00	0.0	88.78
Inlet Culvert Invert	1	115.00	0.0	88.66
U/S Thalweg		245.00	130.0	91.28

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

Gear Type: Minnow Trap (B)		Trap Duration(h): 1

Fish Observations

Species: juvenile/adult Dolly Varden		Life History: Unknown
Total Fish Observed: 18	Fish Measured: 9	Fork Lengths (mm) Min: 92 Max: 144 Mean: 119
Collected/Observed by Gear Type: Downstream Minnow Trap (6) Upstream Minnow Trap (12)

Species: juvenile/adult stickleback-unspecified		Life History: Resident
Total Fish Observed: 2	Fish Measured: 1	Fork Lengths (mm) Min: 96 Max: 96 Mean: 96
Collected/Observed by Gear Type: Downstream Minnow Trap (2)

Species: juvenile coho salmon		Life History: Anadromous
Total Fish Observed: 2	Fish Measured: 1	Fork Lengths (mm) Min: 46 Max: 46 Mean: 46
Collected/Observed by Gear Type: Downstream Minnow Trap (2)

Photos

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