Fish Passage Site 10302193

Coordinates (dec. deg.): 58.41445°, -134.61026°
Legal Description: C040S065E12
Region: Southeast
Road Name: Montana Creek Road

Datum: NAD83
Quad Name / ITM: Juneau B-2
AWC Stream #:
Stream Name: Montana Creek side channel

Elevation:

Site Comments: Site is downstream from MCR 01 and 02.

Survey Date: Jun 24, 2011

Survey SEA11-MCR03

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Mark Eisenman, Jason Olds

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray
  2. Constriction ratio gray

Comments: Main flow is through C2. Fry seen upstream/downstream from culverts. C2 is set up to take most of the flow @ lower water levels. Culvert 1/3/4 set higher for flood events. Heavily vegetated upstream. No stream grade calculated.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 51.02
Inlet Type: Mitered
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 49.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.8 6.1
Height(ft):6.0 6.0
Apron Length(ft):6.12
Water Depth(ft): 0.0
Rustline Height(ft):1.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 0.69
Culvert Gradient: 1.18%
Max Slope:
Max Slope Length:
 

Comments: Dry culvert at time of survey.
  Culvert Observations:
  1. Culvert gradient gray
  2. Constriction ratio gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 51.02
Inlet Type: Mitered
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 49.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Boulder
InletOutlet
Width(ft):6.0 6.1
Height(ft):5.6 5.35
Apron Length(ft):3.0
Water Depth(ft): 0.93
Rustline Height(ft):1.9
Substrate Depth(ft):0.0 0.65
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.69
Culvert Gradient: 1.36%
Max Slope:
Max Slope Length:
 

Comments: Pipe 2 is backwatered and rated Green.
  Culvert Observations:
  1. Culvert gradient gray
  2. Constriction ratio gray
ID: 3 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 50.68
Inlet Type: Mitered
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 49.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.8 6.0
Height(ft):5.9 6.0
Apron Length(ft):5.82
Water Depth(ft): 0.0
Rustline Height(ft):0.7
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.69
Culvert Gradient: 1.67%
Max Slope:
Max Slope Length:
 

Comments: Dry culvert.
  Culvert Observations:
  1. Culvert gradient gray
  2. Constriction ratio gray
ID: 4 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating:
 
Length(ft): 50.92
Inlet Type: Mitered
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle: 49.0
Sedimentation At Inlet: Yes
Inlet Substrate: Boulder
Outlet Substrate: Boulder
InletOutlet
Width(ft):5.9 6.0
Height(ft):5.9 5.6
Apron Length(ft):6.0
Water Depth(ft): 0.0
Rustline Height(ft):0.7
Substrate Depth(ft):0.0 0.4
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.69
Culvert Gradient: 1.25%
Max Slope:
Max Slope Length:
 

Comments: Dry culvert.
  Culvert Observations:
  1. Culvert gradient gray
  2. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandGravel
Subdominant:GravelSand
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 57.0 17.20
Upstream ordinary high water 108.0 15.20
Upstream ordinary high water 128.0 19.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.00
D/S Grade Ctrl (Thalweg) 0.00 90.74
D/S Water Surface Elev 0.00 91.19
D/S Tailcrest or 1st Thalweg 24.00 90.85
D/S Water Surface Elev 24.00 91.30
D/S Water Surface Elev 36.50 91.29
Max Pool Depth 36.50 89.75
Outlet Invert (on substrate) 2 50.00 90.41
Outlet Invert (on metal) 1 50.00 90.75
D/S Water Surface Elev 2 50.00 91.34
Outlet Invert (on metal) 3 50.00 91.53
Outlet Invert (on substrate) 4 50.00 92.05
Outlet Culvert Top 2 50.00 95.84
Outlet Culvert Top 3 50.00 97.56
Outlet Culvert Top 4 50.00 97.73
Outlet Culvert Top 1 50.00 97.75
Inlet Culvert Top (top of miter) 1 94.90 98.28
Inlet Culvert Top (top of miter) 4 94.90 98.29
Inlet Culvert Top (top of miter) 3 94.90 98.31
Inlet Culvert Top (top of miter) 2 98.00 96.47
Inlet Culvert Invert (on metal) 3 100.70 92.37
Inlet Culvert Invert (on metal) 4 100.90 92.46
Inlet Culvert Invert (on metal) 1 101.00 92.36
Inlet Culvert Invert (on substrate) 2 101.00 90.73
U/S Water Surface Elev 2 101.00 91.61
U/S Thalweg 106.00 90.62
U/S Water Surface Elev 106.00 91.60

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) Trap Duration(h): 30.0
Channel Type: Main Channel (>50% of water flow)
Comments: Juveniles seen upstream and downstream from culvert.

Fish Observations

No fish observations occurred during this survey.

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