Fish Passage Site 20603486

Coordinates (dec. deg.): 61.32408°, -151.03802°
Legal Description: S014N010W10
Region: South Central
Road Name: Pretty Creek Road

Datum: NAD83
Quad Name / ITM: Tyonek B-3
AWC Stream #: 247-30-10090-2010
Stream Name: Pretty Creek


Site Comments: None

Survey Date: Apr 28, 2016


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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

  1. Culvert is poorly aligned
  2. Structural Problem
  3. Mechanical damage or joints parting

Comments: Culvert starting to fail and road fill is starting to erode into stream. The culvert headwall also showing signs od degradation. At current flows and condition the culvert does not appear to be a barrier, but that might change quickly.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
Length(ft): 30.3
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 1
Approach Angle: 45.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Gravel
Width(ft):9.0 9.8
Height(ft):6.7 5.1
Apron Length(ft):
Water Depth(ft): 0.4
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Maybe
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:

Comments: Culvert has structural issues and a large portion of the culvert has failed and is dumping road fill into creek. Culvert does have substrate throughout barrel and does not look to be a barrier at time of visit, but site conditions could change quickly depending on culvert integrity. Culvert gradient looks to be similar to stream at about 4%.

  Culvert Observations:
  1. Culvert is poorly aligned
  2. Structural Problem
  3. Mechanical damage or joints parting

Stream Measurements

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

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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