Fish Passage Site 20401321

Coordinates (dec. deg.): 61.54866°, -149.27266°
Legal Description: S017N001E21
Region: South Central
Road Name: Nelson Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10260-2019-3030
Stream Name: Spring Creek


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 UPDATE-1321

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

Overall Fish Passage Rating: Red


Step Pools:
Construction Year:

Site Observations:

  1. Hydraulic flows exceeded capacity
  2. Mechanical damage or joints parting
  3. Structural Problem
  4. Road Fill (pushed off road by grader)
  5. Constriction ratio red

Comments: Nelson Road has recently been widened, but the culvert was not lengthened. Outlet has been partially buried by road fill and road gravel is spilling into creek. This culvert will potentially be removed. The Trunk Road spur to the west and a gate at the eastern end of Nelson road have essentially closed the road. Culvert condition and constriction have been taken into consideration for this site and rating changed to RED.

Culvert Measurements

ID: 1 Structure Type:N/A Fish Passage Rating: Red
Inlet Type:
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 1
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Baffles Present:
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Stream Slope(deg.):
Stream Flow Stage:

No stream width data available.


No elevation data available.

Fish Sampling Efforts

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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