Fish Passage Site 40501699

Coordinates (dec. deg.): 65.09803°, -147.74173°
Legal Description: F003N001W10
Region: Interior
Road Name: Elliott Highway

Datum: WGS84
Quad Name / ITM: Livengood A-2
AWC Stream #:
Stream Name: Willow Creek, pond south of

Elevation:

Site Comments: Pond south of Willow Creek DOT# 358+75

Survey Date: Jun 28, 2010

Survey EDS10-ELH14

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Road bank erosion

Comments: At least one side of this culvert is a pond and no stream widths were taken or constriction ration calculated. During the survey here, fish swirls and jumping were seen. This pipe had a placard, but it was difficult to read. The pipe was different sizes on the inlet and outlet. The overall gradient is suspect due to different sized pipes but calculated using top of pipe elevations. Culvert is backwatered.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 73.6
Inlet Type: Projecting
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.0 4.5
Height(ft):2.5 4.5
Apron Length(ft): 6.0
Water Depth(ft): 1.14
Rustline Height(ft):1.4
Substrate Depth(ft):0.5 0.5
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: -0.52%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev (Road Surface) 101.46
U/S Water Surface Elev (Pond Surface) 0.00 91.64
U/S Water Surface Elev (Water Surface) 7.00 91.65
Inlet Culvert Top (Top of Pipe) 7.00 93.37
Inlet Culvert Invert (Substrate) 7.00 90.94
Outlet Culvert Top (Top of Pipe) 80.60 93.75
Outlet Invert (Substrate) 80.60 89.27
D/S Water Surface Elev (Water Surface) 80.60 90.71
D/S Water Surface Elev (End of Apron - Water Surface) 86.60 90.69
Misc. (End of Apron - Substrate) 86.60 89.92
D/S Water Surface Elev (D/S Pond Water Surface) 98.60 90.68

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): 1.17
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.17
Channel Type: Main Channel (>50% of water flow)
Comments: Nothing was caught.
 
Gear Type: Visual Observation, Ground (C)
Comments: Observed fish jumping and swirling in upstream pond.

Fish Observations

Species: general fish observation, no species information Life History: Not Recorded (Suspected Spawning)
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (1)  
 
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