Fish Passage Improvement site 20401324

Fish Passage Site 20401324

Coordinates (dec. deg.): 61.55365°, -149.23985°
Legal Description: S017N001E22
Region: South Central
Road Name: Glenn Highway

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #:
Stream Name: Spring Creek tributary

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-SP089

site photos

Observers: Olof Jacobsson, Jeff Davis, Edward Weiss

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Maybe

Step Pools:
Construction Year:

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating: Green

Length(ft): 146.0

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: Sand

Outlet Substrate: Sand

	Inlet	Outlet
Width(ft):	3.0	3.0
Height(ft):	3.0	2.6
Apron Length(ft):
Water Depth(ft):	0.9	0.4
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.2

Backwatered?: Maybe

Baffles Present: No

Embedded?: No

Outfall Height:

Outfall Type: At Stream Grade

Constriction Ratio:

Culvert Gradient: 0.10%

Max Slope:

Max Slope Length:

Culvert Observations:

Other, including vibrations, cavitation, etc.

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Sand	Sand
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			90.70
Outlet Culvert Top	1			90.80
D/S Tailcrest or 1st Thalweg		0.00	3.3	88.31
OHW Left Bank		1.30	2.0	87.93
D/S Thalweg		1.60	1.7	87.94
Outlet Invert	1	3.30	0.0	87.80
Outlet Thalweg	1	3.30	0.0	87.88
Road Elev		76.30		92.72
Road Elev		76.30		95.96
Inlet Culvert Invert	1	149.30	0.0	87.94
Inlet Thalweg	1	149.30	0.0	88.02
U/S Thalweg		151.30	2.0	88.16

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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