Fish Passage Improvement site 20401330

Fish Passage Site 20401330

Coordinates (dec. deg.): 61.61601°, -149.21210°
Legal Description: S018N001E26
Region: South Central
Road Name: Seagull Drive

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019-3066-4025
Stream Name: Wasilla Creek tributary

Elevation:

Site Comments: Drains a small retenition area only. Seperated from the upastream lake by an upland area with no connection.No significant habitat upstream of this culvert

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-WA022

site photos

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: Drains a small retenition area only. Seperated from the upastream lake by an upland area with no connection.No significant habitat upstream of this culvert

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating: Red

Length(ft): 54.0

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: Silt/Clay

Outlet Substrate: Silt/Clay

	Inlet	Outlet
Width(ft):	2.1	2.3
Height(ft):	1.8	1.7
Apron Length(ft):
Water Depth(ft):	0.3	1.2
Rustline Height(ft):
Substrate Depth(ft):	0.3	0.6

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height:

Outfall Type:

Constriction Ratio:

Culvert Gradient: 3.06%

Max Slope:

Max Slope Length:

Culvert Observations:

None of this type

Stream Measurements

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

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

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	18.0	7.00
Downstream ordinary high water	55.0	6.00
Upstream ordinary high water	50.0	8.00
Upstream ordinary high water	115.0	8.00

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Culvert Top	1			87.62
Inlet Culvert Top	1			88.98
U/S Thalweg				87.01
D/S Thalweg		0.00	55.0	86.45
D/S Thalweg		37.00	18.0	86.46
OHW Left Bank		53.00	2.0	85.90
Outlet Invert	1	55.00	0.0	85.63
Road Elev		82.00		93.59
Road Elev		82.00		94.48
Inlet Culvert Invert	1	109.00	0.0	87.28
U/S Thalweg	1	110.50	1.5	86.83
U/S Thalweg		224.00	115.0	87.30

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): 3

Gear Type: Minnow Trap (B)		Trap Duration(h): 3

Fish Observations

Species: juvenile/adult stickleback-unspecified		Life History: Resident
Total Fish Observed: 3	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (3)

Species: no fish collected or observed		Life History: Not Applicable
Total Fish Observed: 0	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap (0)

Photos

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