Fish Passage Site 10103543

Coordinates (dec. deg.): 55.61364°, -132.99400°
Legal Description: C072S081E21
Region: Southeast
Road Name: Big Salt Lake Road

Datum: NAD83
Quad Name / ITM: Craig C-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Near Milepost 7. Tributary to Duke Creek.

Survey Date: Jul 24, 2017

Survey SEA17-BSL27

Observers: Elizabeth Flory

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red

Comments: Stream goes subsurface at outfall, no survey. Below outfall is 20ft high riprap, steep drop into alder. Upstream has trickle of water over boulders and is steep with several 2ft high steps. Too shallow to set traps. Upstream habitat looks marginal.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 63.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 14.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):3.9 4.0
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):0.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 6.5
Outfall Type: Free Fall on To Rip Rap
Constriction Ratio: 2.08
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Pipe gradient estimated with rangefinder as 1.5%. Stream gradient over 20%.
  Culvert Observations:
  1. Outfall height red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:BoulderBoulder
Subdominant:Gravel
Stream Slope(deg.):
Stream Flow Stage:Low, Discontinuous Channel
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 2.50
Upstream ordinary high water 50.0 1.50
Upstream ordinary high water 70.0 1.75

Elevations

No elevation data available.

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