Fish Passage Site 20501116

Coordinates (dec. deg.): 61.54167°, -149.94944°
Legal Description: S017N004W26
Region: South Central
Road Name: Private Drive off Lakes Boulev

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

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 MSB23-MS101

Project Supervisor: Michael Mazzacavallo, Alaska Department of Fish and Game — Anchorage, AK
Observers: Michael Mazzacavallo, Kat Leavitt, Beth Evers

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Road Fill (pushed off road by grader)
  2. Sediment accumulation
  3. Culvert gradient red

Comments: Culvert is covered by road fill and essentially submerged. Unable to get accurate measurements due to high water level and road fill coverage. Outlet is filled with gravel almost to the top.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 24.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 1
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Sand
Outlet Substrate: Sand
InletOutlet
Width(ft):1.1 0.0
Height(ft):1.4 0.4
Apron Length(ft):
Water Depth(ft): 0.4
Rustline Height(ft):
Substrate Depth(ft):0.5 1.6
Backwatered?: Yes
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.6
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 2.38%
Max Slope:
Max Slope Length:
 

Comments: Length was taken from mapper, from the 2004 survey. Unable to get corregation depth and width due to water and road fill level.
  Culvert Observations:
  1. Road Fill (pushed off road by grader)
  2. Sediment accumulation
  3. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):
Stream Flow Stage:High

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.25
U/S Water Surface Elev 0.00 98.88
Inlet Culvert Top 30.00 99.38
U/S Water Surface Elev 30.00 98.88
Inlet Culvert Invert 30.00 98.28
Outlet Invert 54.00 98.47
Outlet Culvert Top 54.00 98.81
D/S Water Surface Elev 54.00 98.87
D/S Water Surface Elev 84.00 98.47

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