Fish Passage Improvement site 20400164

Fish Passage Site 20400164

Coordinates (dec. deg.): 61.05933°, -149.79611°
Legal Description: S011N003W10
Region: South Central
Road Name: OLD SEWARD HIGHWAY

Datum: NAD83
Quad Name / ITM: Anchorage A-8
AWC Stream #:
Stream Name: Potter Marsh tributary

Elevation:

Site Comments: POTTER MARSH WATERSHED- UPSTREAM IS POTTER MARSH

Survey Date: Sep 28, 2004

Survey ANC04-4A164

site photos

Observers: Dean Beers, Vic Stanculescu

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Comments: POTTER MARSH WATERSHED, CULVERT PERCHED AND DRY, NO UPSTREAM MEASUREMENTS TAKEN DUE TO UPSTREAM EXTENTION OF POTTER MARSH

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating:

Length(ft): 44.3

Inlet Type: Projecting

Outlet Type:

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.67

Condition Rating(1-5): 2

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate:

Outlet Substrate:

	Inlet	Outlet
Width(ft):	1.5
Height(ft):	1.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):	1.0
Substrate Depth(ft):

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height:

Outfall Type:

Constriction Ratio:

Culvert Gradient: 0.61%

Max Slope:

Max Slope Length:

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:
Subdominant:

Stream Slope(deg.):
Stream Flow Stage:

No stream width data available.

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Max Pool Depth				95.17
U/S Thalweg	1			96.96
Outlet Invert	1	0.00	0.0	96.37
Road Elev		22.00		101.57
Inlet Culvert Invert (TAKEN OFF SUBSTRATE)	1	44.00	0.0	96.64

Notes:

River distance is measured continuously throughout the survey reach along the thalweg of the stream.
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.

Photos

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