Fish Passage Site 20103960

Coordinates (dec. deg.): 61.51682°, -144.43941°
Legal Description: C004S005E14
Region: South Central
Road Name: Local Road

Datum:
Quad Name / ITM: Valdez C-2
AWC Stream #:
Stream Name: Chitna Creek Tributary

Elevation:

Site Comments: None

Survey Date: Sep 09, 2020

Survey UPD21-CHI03

Project Supervisor: Kim Clark, ADFG — Anchorage, AK
Observers: Kirsti Jurica

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Outfall height red

Comments: Inlet has fencing around it. Residents fighting with beavers. Highly manipulated systems. Private property surrounds system. Lots of garbage in creek.. Submitted by Kirst Jurica with Copper River Watershed Project.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 43.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.25
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft): 2.56
Height(ft): 2.74
Apron Length(ft):
Water Depth(ft): 0.11
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.37
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.44
Culvert Gradient: 0.50%
Max Slope:
Max Slope Length:
 

Comments: Gradient measured using watersurface elevations. No access to inlet due to fending.

  Culvert Observations:
  1. Outfall height red
  2. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Gravel
Subdominant:Sand
Stream Slope(deg.):
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Downstream ordinary high water 5.80

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 583.26
U/S Thalweg 0.00 577.91
U/S Water Surface Elev 0.00 578.37
U/S Water Surface Elev 3.00 578.37
Inlet Culvert Top (Damaged) 3.00 579.51
Outlet Culvert Top 46.00 578.04
Outlet Invert 46.00 578.15
Max Pool Depth 49.00 576.99
D/S Water Surface Elev 49.00 577.78
D/S Tailcrest or 1st Thalweg 59.00 577.59
D/S Tailcrest or 1st Thalweg 59.00 577.67

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov