Fish Passage Site 20400602

Coordinates (dec. deg.): 61.50781°, -148.99826°
Legal Description: S016N003E06
Region: South Central
Road Name: Knik River Road

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10200-2074
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 CRB02-KR285

Observers: Dean Beers, James Laurence, James Laurence

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Photos added from the 9/19/16 site visit as part of the Sampling Unmapped Streams in the MSB project. Sight now has a large inlet perch caused by a log just upstream from the inlet. A fence has also been streched across the stream just downstream from the outlet and maybe an adult barrier.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 97.0
Inlet Type:
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):5.0
Height(ft):5.0
Apron Length(ft):
Water Depth(ft): 0.9
Rustline Height(ft):1.5
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.65
Culvert Gradient: 2.36%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 50.0 9.00
Upstream ordinary high water 75.0 7.00
Upstream ordinary high water 100.0 7.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Tailcrest or 1st Thalweg 87.89
Outlet Thalweg 1 0.00 0.0 87.21
Outlet Invert 1 0.00 0.0 87.46
Inlet Thalweg 1 97.00 0.0 89.73
Inlet Culvert Invert 1 97.00 0.0 89.75

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