Fish Passage Site 20103765

Coordinates (dec. deg.): 61.43431°, -142.92755°
Legal Description: C005S014E17
Region: South Central
Road Name: McCarthy Town Road

Datum: NAD83
Quad Name / ITM: Mc Carthy B-6
AWC Stream #: 212-20-10080-2300-3511-4035-5019
Stream Name: Clear Creek

Elevation:

Site Comments: None

Survey Date: Jul 21, 2017

Survey CRWP17-Ken1

Observers: Kirsti Jurica, Hoots Witsoe

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Beaver Activity
  2. Shallow fill; inadequate roadfill volume above culvert
  3. Culvert gradient red
  4. Hydraulic flows exceeded capacity

Comments: Culvert assessment performed and submitted by the Copper River Watershed Project. Beaver dam in outlet and cleared during site visit. Water levels dropped. Water surface elevations taken when dam was intact. Area and road flooded before dam removal. Springs upstream and downstream, community drinking water. Coho spawning and rearing in this system.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 39.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 4
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):4.05 4.1
Height(ft):3.35 2.81
Apron Length(ft):
Water Depth(ft): 0.3
Rustline Height(ft):1.05
Substrate Depth(ft):0.7 1.2
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.55%
Max Slope:
Max Slope Length:
 

Comments: Beaver dam was inside outlet and removed during site visit.
  Culvert Observations:
  1. Beaver Activity
  2. Shallow fill; inadequate roadfill volume above culvert
  3. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
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)
Misc. (Low area on road where flooding is occuring approx 100 feet west of culvert) 96.85
Road Elev 100.50
D/S Water Surface Elev 0.00 96.85
Max Pool Depth 0.00 95.30
Outlet Invert (on substrate) 55.00 96.57
D/S Water Surface Elev 55.00 96.87
Outlet Culvert Top 55.00 99.38
Inlet Culvert Top 80.00 100.00
U/S Water Surface Elev 80.00 99.10
Inlet Culvert Invert (on substrate) 80.00 96.65
U/S Thalweg 85.00 96.36
U/S Water Surface Elev (Water surface elevations taken while beaver dam was intact) 85.00 99.11
U/S Grade Ctrl (Thalweg) 100.00 99.51
U/S Water Surface Elev 100.00 99.66

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
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.0
 
Gear Type: Minnow Trap (C) Trap Duration(h): 2.0

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 5 Fish Measured: 3 Fork Lengths (mm) Min: 65 Max: 90 Mean: 75
Collected/Observed by Gear Type: Not Recorded Minnow Trap (2)  Not Recorded Minnow Trap (1)  Not Recorded Minnow Trap (2)  

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