Fish Passage Site 20501237

Coordinates (dec. deg.): 61.58193°, -149.57242°
Legal Description: S017N002W11
Region: South Central
Road Name: Vienna Woods Access

Datum: WGS84
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Wetland connector

Elevation:

Site Comments: Site ~200' D/S of SUZ01. Wetland connector

Survey Date: Aug 19, 2009

Survey MSB09-VWA01

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Hydraulic flows exceeded capacity
  2. Mechanical damage or joints parting
  3. Sediment accumulation

Comments: U/s grade = 0.54% (by WS); site ~200' D/S of SUZ01

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 39.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 21.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):2.6 2.0
Height(ft):1.1 1.1
Apron Length(ft):
Water Depth(ft): 0.67
Rustline Height(ft):
Substrate Depth(ft):1.1 1.1
Backwatered?: Yes
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.1
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.92%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Hydraulic flows exceeded capacity
  2. Mechanical damage or joints parting
  3. Sediment accumulation

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:GravelGravel
Stream Slope(deg.):0.54
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Headwater (pond immed. u/s) 1 95.17
Outlet Pool Water Elev 1 95.17
D/S Grade Ctrl (Thalweg) 1 0.00 14.0 93.84
D/S Water Surface Elev (@GP) 1 0.00 14.0 93.97
D/S Water Surface Elev (@TWC) 1 8.00 6.0 95.17
D/S Tailcrest or 1st Thalweg 1 8.00 6.0 94.92
Outlet Invert 1 14.00 0.0 94.50
Road Elev 1 33.50 100.47
Inlet Culvert Invert (on substrate) 1 53.00 0.0 94.86

Notes:

  1. River distance is measured continuously throughout the survey reach along the thalweg of the stream.
  2. 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.

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