Fish Passage Site 20100723

Coordinates (dec. deg.): 62.93774°, -145.51118°
Legal Description: C013N002W01
Region: South Central
Road Name: Richardson Highway

Datum: NAD83
Quad Name / ITM: Gulkana D-4
AWC Stream #:
Stream Name: Hufman Creek

Elevation:

Site Comments: Tributary to Paxon Lake/ Gulkana River

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 CRWP17-Rich13

Observers: Kirsti Jurica, Hoots Witsoe

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Road bank erosion

Comments: Culvert assessment performed and submitted by the Copper River Watershed Project. Small spring fed system. Channel has been diked upstream and downstream from crossing. No fish caught.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Red
 
Length(ft): 100.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):7.0
Height(ft):7.39
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):1.5
Substrate Depth(ft):0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 8.3
Outfall Type: Free Fall In To Pool
Constriction Ratio: 1.3
Culvert Gradient: 3.58%
Max Slope:
Max Slope Length:
 

Comments: Outfall height measured using stadia rod. Pipe gradient calculated using top of culvert elevations, could not access invert due to perch. Outlet too dangerous to measure.
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):3.5
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 7.10
Downstream ordinary high water 7.80
Downstream ordinary high water 7.30
Upstream ordinary high water 6.90
Upstream ordinary high water 6.10
Upstream ordinary high water 3.10

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 74.51
D/S Water Surface Elev 0.00 75.31
D/S Tailcrest or 1st Thalweg 53.00 78.06
D/S Water Surface Elev 53.00 78.44
Outlet Pool Water Elev 69.00 79.10
Max Pool Depth 69.00 78.35
Outlet Culvert Top 75.00 94.72
D/S Thalweg (point directly below outlet) 75.00 79.43
Outlet Invert (Elevation estimated using stadia rod, 8.3 feet to invert from bottom.) 75.00 87.73
Inlet Culvert Invert (on pipe) 175.00 90.91
U/S Water Surface Elev 175.00 91.38
Inlet Culvert Top 175.00 98.30
U/S Grade Ctrl (Thalweg) 179.00 91.52
U/S Water Surface Elev 179.00 92.00
U/S Grade Ctrl (Thalweg) 254.00 93.06
U/S Water Surface Elev 254.00 93.84
U/S Grade Ctrl (Thalweg) 345.00 96.97
U/S Water Surface Elev 345.00 97.61

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): 15.0
 
Gear Type: Minnow Trap (B) Trap Duration(h): 15.0
Comments: No fish caught
 
Gear Type: Minnow Trap (C) Trap Duration(h): 15.0
Comments: No fish caught
 
Gear Type: Minnow Trap (D) Trap Duration(h): 15.0
Comments: No fish caught

Fish Observations

Species: juvenile sockeye salmon Life History: Anadromous
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 45 Max: 50 Mean: 47
Collected/Observed by Gear Type: Not Recorded Minnow Trap (2)  

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