Fish Passage Site 20502060

Coordinates (dec. deg.): 63.20207°, -147.30284°
Legal Description: F020S002E11
Region: South Central
Road Name: Valdez Mining District Road

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

Elevation:

Site Comments: Old mining road off the Denali Highway.

Survey Date: Jul 06, 2011

Survey MSB11-PSVMD05

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. Structural Problem
  3. Culvert sagging in middle
  4. Mechanical damage or joints parting
  5. Inlet perch

Comments: The drainage is a small upland tributary draining the base of the mountain and marsh area. At end of the pipe is a 4' broken piece of pipe creating a max gradient of approximately 2%. Pipe had a sag in middle, compound gradient and a perched inlet.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated plastic) Fish Passage Rating: Red
 
Length(ft): 40.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 1
Approach Angle: 95.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 2.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.15
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.65
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Structural Problem
  3. Culvert sagging in middle
  4. Mechanical damage or joints parting
  5. Inlet perch

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayCobble
Subdominant:OrganicGravel
Stream Slope(deg.):
Stream Flow Stage:Low

No stream width data available.

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