Fish Passage Site 20400001

Coordinates (dec. deg.): 61.42820°, -149.41703°
Legal Description: S016N001W35
Region: South Central
Road Name: Mirror Lake Road

Datum: NAD83
Quad Name / ITM: Anchorage B-7
AWC Stream #:
Stream Name: Mirror Creek

Elevation:

Site Comments: MIRROR CREEK WATERSHED. Creek between a lake and pond.

Survey Date: Aug 04, 2004

Survey ANC04-1A001

Observers: Dean Beers, Joe Miller

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: MIRROR CREEK WATERSHED, ADULT RAINBOW TROUT PRESENT AT SITE, NOTE The thalweg and stream measurements were not taken because of the creek being between a lake and pond. *** Appears there is an overflow pipe but field crew only measured one pipe that appears to be countersunk (11/10/08).

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 48.2
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):5.0
Height(ft):5.0
Apron Length(ft):
Water Depth(ft): 0.6
Rustline Height(ft):3.0
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: Yes
Outfall Height: -3.0
Outfall Type:
Constriction Ratio: 0.77
Culvert Gradient: 1.68%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bank full 75.0 9.90
Upstream bank full 100.0 11.70
Upstream bank full 125.0 12.10
Upstream bank full 150.0 15.50
Upstream bed width 75.0 4.00
Upstream bed width 100.0 5.50
Upstream bed width 125.0 6.90
Upstream bed width 150.0 7.20
Upstream ordinary high water 75.0 5.30
Upstream ordinary high water 100.0 5.90
Upstream ordinary high water 125.0 7.30
Upstream ordinary high water 150.0 7.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Max Pool Depth 95.31
D/S Thalweg 95.31
OHW Left Bank 97.79
OHW Left Bank 99.09
Outlet Invert 1 0.00 0.0 94.19
Road Elev 24.00 104.10
Inlet Culvert Invert 1 48.00 0.0 95.00

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: Visual Observation, Ground (A)

Fish Observations

No fish observations occurred during this survey.

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