Fish Passage Site 20501219

Coordinates (dec. deg.): 61.31416°, -150.03020°
Legal Description: S014N004W08
Region: South Central
Road Name: Point MacKenzie Road

Datum: WGS84
Quad Name / ITM: Tyonek B-1
AWC Stream #:
Stream Name: Unnamed lake outlet

Elevation:

Site Comments: connects marshes that drain a lake

Survey Date: Aug 20, 2009

Survey MSB09-PMR01

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. None of this type

Comments: Connects marshes that drain a lake w/RT; rd looks recently paved. HWS = TWS = backwatered.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 80.6
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.0 2.4
Apron Length(ft):
Water Depth(ft): 1.2
Rustline Height(ft):1.3
Substrate Depth(ft):0.0 0.6
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 0.01%
Max Slope:
Max Slope Length:
 

Comments: Connects marshes that drain a lake w/RT; road looks recently paved. HWS = TWS = backwatered
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
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)
U/S Headwater 1 98.16
Outlet Pool Water Elev 1 98.16
D/S Thalweg (d/s becomes marsh ~15') 1 0.00 5.0 97.25
Outlet Invert (on substrate (west end)) 1 5.00 0.0 96.96
Road Elev 1 45.00 105.89
Inlet Culvert Invert ((east end)) 1 85.60 0.0 96.97
U/S Thalweg 1 85.60 0.0 96.76

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): 0.67
Comments: no fish caught; 10ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.67
Comments: 10ft d/s

Fish Observations

Species: stickleback-unspecified Life History: Resident
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

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