Fish Passage Site 20400029

Coordinates (dec. deg.): 61.46380°, -149.33134°
Legal Description: S016N001E19
Region: South Central
Road Name: GLENN Highway

Datum: NAD83
Quad Name / ITM: Anchorage B-7
AWC Stream #: 247-50-10180
Stream Name: Unnamed

Elevation:

Site Comments: KNIK WATERSHED, TIDALLY AFFECTED ON BOTH SIDES OF CULVERT

Survey Date: Aug 11, 2004

Survey ANC04-2A029

Observers: Dean Beers, Joe Miller

Overall Fish Passage Rating: Red

Tidal: Yes
Backwatered: No

Step Pools:
Construction Year:


Comments: KNIK WATERSHED, TIDALLY AFFECTED ON BOTH SIDES OF CULVERT

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 171.3
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 4
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):6.5
Height(ft):6.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):3.5
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: Yes
Outfall Height:
Outfall Type:
Constriction Ratio: 0.53
Culvert Gradient: -0.01%
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 bank full 75.0 49.20
Upstream bank full 100.0 26.70
Upstream bank full 125.0 22.70
Upstream bed width 75.0 1.60
Upstream bed width 100.0 0.90
Upstream bed width 125.0 0.80
Upstream bed width 150.0 5.50
Upstream ordinary high water 75.0 15.90
Upstream ordinary high water 100.0 6.60
Upstream ordinary high water 125.0 10.10
Upstream ordinary high water 150.0 16.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Max Pool Depth 93.93
OHW Left Bank 95.65
U/S Thalweg 1 95.65
D/S Tailcrest or 1st Thalweg 95.85
OHW Left Bank 101.88
D/S Thalweg 92.79
Outlet Invert 1 0.00 0.0 93.51
Road Elev 85.50 107.03
Inlet Culvert Invert 1 171.00 0.0 93.50

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

Gear Type: Visual Observation, Ground (A)

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov