Fish Passage Site 40401730

Coordinates (dec. deg.): 65.34194°, -146.88912°
Legal Description: F006N004E15
Region: Interior
Road Name: Nome Creek Road

Datum: NAD83
Quad Name / ITM: Circle B-6
AWC Stream #:
Stream Name: Nome Creek tributary

Elevation:

Site Comments: None

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 EDS10-NCR05

Observers: Mark Eisenman, Justin Leon

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Damage associated with ice problems
  2. Road Fill (pushed off road by grader)
  3. Structural Problem
  4. Road bank erosion
  5. Outfall height red
  6. Culvert gradient red

Comments: Road prism and ice damage to pipes have caused a small pond on the u/s side of the road. There is subsurface flow thought the prism. The primary 4 foot pipe has been bent upward and is not allowing much water to flow thought it. Culvert 1 is a small black corrugated plastic pipe with a smooth liner on the inside looks like it was put in when the prism was repaired. There is quite a bit of road fill thoughout the downstream area. U/S is mostly a tundra bog with a deep channel with muddy bottom. Site has been washed out recently and culverts are in pretty bad shape. Multiple overflow pipes through out prism 2 pipes actually passing water. C1 is a black corrugated pipe with a smooth liner inside. C2 is a 4 foot pipe that has been bent up from ice damage and spring flooding with a pipe break about 20 feet from inlet. ***This site has been replaced. This old survey should be used for historical purposes only.***

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated plastic) Fish Passage Rating: Red
 
Length(ft): 30.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 7.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.7 1.5
Height(ft):1.7 1.5
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.15
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.63
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.88
Culvert Gradient: 1.03%
Max Slope:
Max Slope Length:
 

Comments: Black Corrugated Pipe with a smooth liner inside.
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Damage associated with ice problems
  4. Road Fill (pushed off road by grader)
  5. Road bank erosion
  6. Structural Problem
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 50.6
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 1
Approach Angle: 7.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 4.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.34
Rustline Height(ft):0.9
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: 0.88
Culvert Gradient: 7.40%
Max Slope: 13.75
Max Slope Length: 20.0
 

Comments: This pipe has been bent up on the inlet side from either ice damage or spring flood damage or possibly mechanically when the prism was repaired. It looks like a section of the inlet has been sheared off about 6 to 7 feet in length.
  Culvert Observations:
  1. Damage associated with ice problems
  2. Road Fill (pushed off road by grader)
  3. Structural Problem
  4. Culvert gradient red
  5. Sediment accumulation
  6. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayCobble
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 77.0 5.10
Upstream ordinary high water 96.0 5.30
Upstream ordinary high water 127.0 4.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 105.15
Inlet Culvert Invert (Bottom of Pipe) 1 0.00 102.76
Inlet Culvert Invert (Bottom of Pipe) 2 0.00 103.26
U/S Water Surface Elev (Water Surface) 1 0.00 103.49
U/S Water Surface Elev (Water surface at inlet also Headwater elev.) 2 0.00 103.49
Misc. (Slope Break in Pipe.) 2 20.00 100.51
Outlet Invert 1 30.20 102.45
D/S Water Surface Elev (Invert out water surface) 1 30.20 102.60
Outlet Pool Water Elev 1 31.20 101.97
Max Pool Depth 1 31.20 101.01
D/S Tailcrest or 1st Thalweg (0 starts up stream) 1 35.20 101.27
D/S Water Surface Elev 1 35.20 102.06
D/S Water Surface Elev (Water surface at outlet) 2 50.60 100.04
Outlet Invert (Bottom of Pipe) 2 50.60 99.70
Max Pool Depth 2 56.60 98.71
Outlet Pool Water Elev 2 56.60 100.02
D/S Tailcrest or 1st Thalweg (Thalweg) 2 63.60 99.59
D/S Water Surface Elev (Water Surface at TWC) 2 63.60 100.02

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): 1.25
Channel Type: Main Channel (>50% of water flow)
Comments: Set in pool upstream from pipe inlets. No fish caught or seen.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.25
Channel Type: Main Channel (>50% of water flow)
Comments: Set in pool down stream from outlets about 25ft. No fish caught or seen.

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)  

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