Fish Passage Improvement site 20400107

Fish Passage Site 20400107

Coordinates (dec. deg.): 61.12818°, -149.79664°
Legal Description: S012N003W15
Region: South Central
Road Name: Pacer Road

Datum: NAD83
Quad Name / ITM: Anchorage A-8
AWC Stream #: 247-60-10340-2018
Stream Name: Little Campbell Creek South Fork

Elevation:

Site Comments: CAMBELL CREEK WATERSHED

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 UPD20-PAC01

site photos

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Gillian O'Doherty, Kim Clark, Michael Mazzacavallo

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year: 2011

Site Observations:

None of this type

Comments: Diversion upstream to golf course. Landowner mentioned creek runs dry in July for a month and observes dead and stranded fish. Banks in middle of culvert not well defined. One grade control weir at inlet collapsed.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Green

Length(ft): 80.5

Inlet Type: Projecting

Outlet Type: Projecting

Corrugation Depth(in.): 1.0

Corrugation Width(in.): 3.0

Condition Rating(1-5): 1

Approach Angle: 28.0

Sedimentation At Inlet: No

Inlet Substrate: Boulder

Outlet Substrate: Gravel

	Inlet	Outlet
Width(ft):	12.0	11.4
Height(ft):	6.8	7.15
Apron Length(ft):
Water Depth(ft):		0.2
Rustline Height(ft):
Substrate Depth(ft):		4.9

Backwatered?: No

Baffles Present: No

Embedded?: Yes

Embedded Depth(ft): 4.9

Outfall Height:

Outfall Type: At Stream Grade

Constriction Ratio: 2.35

Culvert Gradient: 2.90%

Max Slope:

Max Slope Length:

Comments: No rust line, pipe in great condition.

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Boulder	Gravel
Subdominant:	Gravel	Gravel

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

No stream width data available.

Elevations

Locator ID	River Distance (ft)¹	Relative Elevation (ft)
D/S Water Surface Elev	0.00	128.81
D/S Thalweg (taken mid riffle downstream, no features)	0.00	129.35
Outlet Culvert Top	23.70	10.16
D/S Water Surface Elev	23.70	17.29
Outlet Invert	23.70	17.49
Top of Pipe Inlet	80.50	118.01
U/S Water Surface Elev	80.50	124.67
Inlet Culvert Invert	80.50	125.02
U/S Thalweg (below rock wier)	81.10	124.84
U/S Water Surface Elev	81.10	124.28
U/S Thalweg (grade control. Top of rock wier/step (artificial))	87.50	124.18
U/S Water Surface Elev	87.50	123.66
U/S Thalweg (top of rock step)	99.50	123.95
U/S Water Surface Elev	99.50	123.52

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.