Fish Passage Site 20502062

Coordinates (dec. deg.): 63.20617°, -147.38712°
Legal Description: F020S002E04
Region: South Central
Road Name: Valdez Mining District Road

Datum: NAD83
Quad Name / ITM: Healy A-1
AWC Stream #:
Stream Name:

Elevation:

Site Comments: Site back Valdez Mine District road off the Denali Highway.

Survey Date: Jul 07, 2011

Survey MSB11-PSVMD06

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: John Greuey, Abraham Gioffre

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Inlet perch
  3. Structural Problem
  4. Culvert sagging in middle
  5. Shallow fill; inadequate roadfill volume above culvert
  6. Mechanical damage or joints parting

Comments: Upst channel is a very steep mountain drainage. Pipe is badly crushed in the middle and inlet invert perched. Outlet has outfall height.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 60.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 2
Approach Angle: 10.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 3.85
Height(ft):3.8 4.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.3
Rustline Height(ft):0.4
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.4
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Inlet perch
  3. Structural Problem
  4. Culvert sagging in middle
  5. Shallow fill; inadequate roadfill volume above culvert
  6. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:SandCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 20.0 5.00
Downstream ordinary high water 50.0 4.35
Downstream ordinary high water 80.0 3.80

Elevations

No elevation data available.

Fish Sampling Efforts

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov