Fish Passage Site 40601683

Coordinates (dec. deg.): 67.19498°, -150.27907°
Legal Description: F027N012W06
Region: Interior
Road Name: Dalton Highway

Datum: NAD83
Quad Name / ITM: Wiseman A-1
AWC Stream #:
Stream Name: Rosie Creek

Elevation:

Site Comments: None

Survey Date: Aug 24, 2010

Survey EDS10-DAL23

Observers: Gillian O'Doherty, Ben Histand

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year:


Site Observations:

  1. Constriction ratio gray

Comments: Nice creek. Total Pipe hieght is 14.8. Substrate scoured out of middle of pipe but present at inlet and outlet: pipe set too high. Substrate depths are estimates. Gradient from top of pipe. Constructed steps downstream of outlet somewhat collapsed but seem to work ok. Traps soaked 2 hr.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 105.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 4
Approach Angle: 52.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):14.8 14.6
Height(ft):14.0 12.6
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.32
Rustline Height(ft):3.3
Substrate Depth(ft):0.8 2.2
Backwatered?: No
Baffles Present:
Embedded?: No
Outfall Height: 0.15
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio: 0.66
Culvert Gradient: 0.73%
Max Slope:
Max Slope Length:
 

Comments: Drop from water surface at outlet to natural channel downstream of weirs is approx 4.5 feet. Drop immediately at outlet used for rating, approx 0.15 feet.
  Culvert Observations:
  1. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSand
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 350.0 18.00
Upstream ordinary high water 450.0 25.00
Upstream ordinary high water 550.0 23.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Grade Ctrl (Thalweg) (top of 3rd riffle d/s in natural channel) 0.00 92.71
D/S Water Surface Elev 0.00 93.32
Max Pool Depth 33.00 90.32
D/S Grade Ctrl (Thalweg) (top of 2nd riffle d/s) 79.00 93.29
D/S Water Surface Elev 79.00 93.93
Max Pool Depth 101.00 91.12
D/S Water Surface Elev 141.00 94.31
D/S Grade Ctrl (Thalweg) (top of 1st riffle d/s in natural channel) 141.00 93.78
D/S Water Surface Elev 174.00 94.42
D/S Thalweg (stesam channel thalweg immed. d/s of rip rap) 174.00 93.30
Max Pool Depth (immed d/s of weir) 190.00 93.51
D/S Water Surface Elev (turbulent) 190.00 94.86
Misc. (top of weir) 193.00 94.00
D/S Water Surface Elev 193.00 95.25
Max Pool Depth (damaged) 214.00 93.73
D/S Water Surface Elev 214.00 95.75
D/S Water Surface Elev 216.00 96.25
Misc. (top of weir) 216.00 94.93
Max Pool Depth 228.00 93.48
D/S Water Surface Elev 228.00 96.35
Misc. (top of weir) 238.00 96.38
D/S Water Surface Elev 238.00 97.45
Outlet Invert (on substrate) 245.00 96.28
D/S Water Surface Elev (water surface at outlet inv) 245.00 97.60
Outlet Culvert Top 245.00 109.38
Inlet Culvert Top 350.00 110.15
U/S Water Surface Elev (water surface at invert in) 350.00 97.74
Inlet Culvert Invert (on substrate) 350.00 95.69
U/S Water Surface Elev 352.00 97.83
Misc. (Max depth of pool below u/s weir) 352.00 95.49
U/S Water Surface Elev 360.00 98.26
Misc. (top of weir) 360.00 97.49
U/S Grade Ctrl (Thalweg) (natural channel) 429.00 98.30
U/S Water Surface Elev 429.00 99.08

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: Minnow Trap (A) Trap Duration(h): 2.0
Comments: u/s 40' in beaver pond no fish caught or obs.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
Comments: d/s 100' in pool under willow no fish caught or obs.

Fish Observations

Species: no fish collected or observed Life History: Not Applicable
Total Fish Observed: 0 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (0)  Upstream Minnow Trap (0)  

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