Fish Passage Improvement site 20401315

Fish Passage Site 20401315

Coordinates (dec. deg.): 61.54827°, -149.22928°
Legal Description: S017N001E23
Region: South Central
Road Name: Old Matanuska Road

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019-3020
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-SP014

site photos

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating:

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: There is a newer survey available for this site.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating:

Length(ft): 20.0

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: Gravel

Outlet Substrate: Gravel

	Inlet	Outlet
Width(ft):	4.0	3.9
Height(ft):	3.0	3.2
Apron Length(ft):
Water Depth(ft):	1.1	1.1
Rustline Height(ft):
Substrate Depth(ft):	1.0	0.7

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height:

Outfall Type: At Stream Grade

Constriction Ratio:

Culvert Gradient:

Max Slope:

Max Slope Length:

Culvert Observations:

Road Fill (pushed off road by grader)

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:

Stream Slope(deg.):
Stream Flow Stage:

No stream width data available.

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Inlet Culvert Top	1			94.13
Outlet Culvert Top	1			94.19
D/S Thalweg				89.98
D/S Thalweg				90.11
D/S Tailcrest or 1st Thalweg		0.00	39.0	91.26
D/S Thalweg		19.00	20.0	90.73
OHW Left Bank		24.00	15.0	90.78
Outlet Invert	1	39.00	0.0	90.96
Outlet Thalweg	1	39.00	0.0	90.70
Road Elev		49.00		94.24
Road Elev		49.00		94.30
Inlet Culvert Invert	1	59.00	0.0	91.08
Inlet Thalweg	1	59.00	0.0	91.08

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Photos

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