Fish Passage Improvement site 20501051

Fish Passage Site 20501051

Coordinates (dec. deg.): 61.61198°, -149.63937°
Legal Description: S018N002W33
Region: South Central
Road Name: North Phillips Drive

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #: 247-50-10330-2050-3050-4027
Stream Name: Cloudy Lake Outlet

Elevation:

Site Comments: Little Meadow Creek tributary

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 UPDATE-1051

site photos

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Mark Eisenman, Franklin Dekker

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Outfall height red
Structural Problem
Mechanical damage or joints parting
Compound gradient in pipe
Inlet perch
Culvert is too short

Comments: Site visit 8/23/18 to assess current site conditions. Downstream fish passage structure has completely failed and has deteriorated and completely filled in. Culvert outlet has corroded away creating a perch at outlet and there is a significant amount of debris inside the culvert. Site rating changed to Red. Road has been widened since 2004 survey and there is a significant amount of road gravel in the downstream channel. Section of culvert at inlet has separated and can be seen in photos inside the culvert. Cloudy Lake directly upstream. Swimming hole upstream from inlet. Full assessment not done, but 2004 assessment showed Red Gradient for site.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 28.0

Inlet Type: Projecting

Outlet Type: Projecting

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.75

Condition Rating(1-5): 1

Approach Angle:

Sedimentation At Inlet: No

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	2.0	2.0
Height(ft):	1.75	2.0
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Outfall Height: 0.4

Outfall Type: Free Fall In To Pool

Constriction Ratio:

Culvert Gradient:

Max Slope:

Max Slope Length:

Comments: Outfall difficult to measure. Bottom of culvert at outlet has completely corroded away creating a perch higher than 4 inches. Compound gradient in culvert. Inlet damage. Inlet section of culvert has separated.

Culvert Observations: