Fish Passage Site 20100476

Coordinates (dec. deg.): 60.47127°, -145.37404°
Legal Description: C016S001W22
Region: South Central
Road Name: Copper River Highway

Datum: NAD83
Quad Name / ITM: Cordova B-4
AWC Stream #:
Stream Name: Glacier River 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 CRWP17-Cop10

Observers: Kirsti Jurica, Hoots Witsoe

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Beaver Activity
  2. Mechanical damage or joints parting
  3. Structural Problem

Comments: Culvert assessment performed and submitted by the Copper River Watershed Project. Upstream and downstream water surface elevation equal and downstream beaver dam is backwatering site, but 2002 survey showed significant inlet damage and inlet is now completely submerged and unable to verify culvert condition and if it is unobstructed. Culvert was completely submerged on inlet side and deep and buried on outlet side. Numerous three spine sticklebacks caught upstream and downstream. Beaver dams and pond complexes upstream and downstream of crossing.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 90.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):
Height(ft):5.01 4.4
Apron Length(ft):
Water Depth(ft): 4.82
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Cuvlert gradient using top of culvert elevations and estimated length of 65 feet is 1.1%, using top of culvert elevations and using culvert length from 2011 (90') is 0.74% Unsure if top of culvert is damaged or not. Inlet and outlet hieghts calculated from survey elevations.
  Culvert Observations:
  1. Beaver Activity
  2. Structural Problem
  3. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
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 100.00
D/S Thalweg (Below beaver dam) 0.00 85.58
D/S Water Surface Elev 0.00 87.38
D/S Grade Ctrl (Thalweg) (Top of beaver dam) 6.00 90.60
Outlet Culvert Top 70.00 90.19
Outlet Invert (used distance over road (2002 survey had culvert at 97')) 70.00 85.79
D/S Water Surface Elev 70.00 90.61
Inlet Culvert Top 135.00 90.91
U/S Water Surface Elev 135.00 90.61
Inlet Culvert Invert 135.00 85.90
U/S Thalweg 140.00 85.62
U/S Water Surface Elev 140.00 90.61

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): 18.0
 
Gear Type: Minnow Trap (B) Trap Duration(h): 18.0
 
Gear Type: Minnow Trap (C) Trap Duration(h): 18.0
Comments: No fish caught

Fish Observations

Species: stickleback-unspecified Life History: Unknown
Total Fish Observed: 15 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Not Recorded Minnow Trap (4)  Not Recorded Minnow Trap (11)  

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