Fish Passage Site 20400023

Coordinates (dec. deg.): 61.31291°, -149.57469°
Legal Description: S014N002W11
Region: South Central
Road Name: Driveway

Datum: NAD83
Quad Name / ITM: Anchorage B-7
AWC Stream #: 247-50-10110-2053
Stream Name: Meadow Creek

Elevation:

Site Comments: Eagle River Watershed. Site is on driveway off of VFW Drive. Downstream is site 20400022 at Hidden Haven Drive.

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 UPD21-VFW01

Project Supervisor: Kim Clark, ADFG — Anchorage, AK
Observers: Kim Clark, Michael Mazzacavallo

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year: 2016


Comments: Grade control structure at and in outlet of pipe. Stream is channelized between two roads, no stream gradient was recorded. Recent waterline marks on trees downstream of outlet about 1 foot above current water surface. Drainage seep enters stream about 115ft upstream of inlet. Boulders are placed in stream.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 57.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 5.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):13.2 13.2
Height(ft):7.6 7.3
Apron Length(ft):
Water Depth(ft): 1.07
Rustline Height(ft):0.42
Substrate Depth(ft):1.3 1.6
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.3
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.17
Culvert Gradient: 5.70%
Max Slope:
Max Slope Length:
 

Comments: Designs call pipe gradient at 5.7%. Measured pipe gradient 5.7%, Water surface gradient 5.1%, Invert gradient 5.0%.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):
Stream Flow Stage:High
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Upstream ordinary high water 54.0 9.30
Upstream ordinary high water 151.0 10.60
Upstream ordinary high water 236.0 12.40
Upstream ordinary high water 255.0 12.70

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 106.35
Max Pool Depth 0.00 89.03
D/S Water Surface Elev 0.00 90.77
D/S Grade Ctrl (Thalweg) 13.00 91.61
D/S Water Surface Elev 13.00 92.74
Max Pool Depth 37.00 91.97
D/S Water Surface Elev 37.00 93.15
Outlet Culvert Top 42.00 100.00
Outlet Invert 42.00 92.75
D/S Water Surface Elev (grade control at culvert outlet (in pipe)) 42.00 93.82
Inlet Culvert Top 99.13 103.28
Inlet Culvert Invert 99.13 95.58
U/S Water Surface Elev 99.13 96.72
U/S Thalweg 113.13 96.30
U/S Water Surface Elev 113.13 97.74
U/S Thalweg 149.13 98.30
U/S Water Surface Elev 149.13 99.82

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