Fish Passage Site 20503428

Coordinates (dec. deg.): 61.82218°, -150.06403°
Legal Description: S020N004W18
Region: South Central
Road Name: Alaska Railroad

Datum: NAD83
Quad Name / ITM: Tyonek D-1
AWC Stream #: 247-41-10200-2130-3021
Stream Name: Unnamed Tributary to Little Willow Creek


Site Comments: MP191.14

Survey Date: May 11, 2015


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

Overall Fish Passage Rating: Green


Step Pools:
Construction Year:

Comments: Culvert was replaced in 2014. Looks like creek may have rerouted due to beaver activity. Most flow coming from ditch upstream. Upstream channel drains marsh. Red flocculant upstream and downstream. No survey.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
Length(ft): 50.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 90.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
Width(ft):5.8 5.9
Height(ft):6.0 5.9
Apron Length(ft):
Water Depth(ft): 1.55
Rustline Height(ft):1.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:

Comments: Water surface appears flat though barrel, culvert most likely not a barrier.

Stream Measurements

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

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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