Fish Passage Improvement site 20601530

Fish Passage Site 20601530

Coordinates (dec. deg.): 61.16178°, -151.05526°
Legal Description: S012N010W04
Region: South Central
Road Name: Beluga Highway

Datum: NAD83
Quad Name / ITM: Tyonek A-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: .

Survey Date: Jun 05, 2002

Survey TYCS1-TY004

site photos

Observers: Cecil Rich, Michael Anderson, Joe Buckwalter

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:

Site Observations:

Outfall height red
Culvert gradient red
Compound gradient in pipe
Constriction ratio gray

Comments: 2016 site visit. Set traps downstream for 26 hours did not catch any fish. Might be a barrier downstream. Culverts still very perched. Satillite imagery shows a decent stream course above site.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated Metal)

Fish Passage Rating: Red

Length(ft): 45.5

Inlet Type: Projecting

Outlet Type: Projecting

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.625

Condition Rating(1-5):

Approach Angle:

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.21	3.0
Height(ft):	2.88	3.13
Apron Length(ft):
Water Depth(ft):	0.17	0.125
Rustline Height(ft):
Substrate Depth(ft):	0.0	0.0

Backwatered?:

Baffles Present: No

Embedded?: No

Outfall Height: 1.06

Outfall Type: Free Fall In To Pool

Constriction Ratio: 0.54

Culvert Gradient: 10.57%

Max Slope:

Max Slope Length:

Culvert Observations:

Improper bedding

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:	Gravel	Gravel

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	12.2	5.70
Downstream ordinary high water	50.0	8.50
Downstream ordinary high water	77.3	8.00
Upstream ordinary high water	5.0	12.40
Upstream ordinary high water	50.0	5.00
Upstream ordinary high water	100.0	6.90

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
D/S Thalweg		0.00	77.3	85.71
D/S Water Surface Elev		0.00	77.3	85.85
D/S OHW Elev		0.00	77.3	86.04
D/S Water Surface Elev		27.30	50.0	86.12
D/S OHW Elev		27.30	50.0	86.60
D/S Thalweg		27.30	50.0	85.60
D/S Tailcrest or 1st Thalweg		65.10	12.2	86.31
OHW Left Bank		67.80	9.5	86.62
OHW Left Bank		69.30	8.0	87.31
D/S Thalweg		73.30	4.0	84.71
Max Pool Depth	1	73.30	4.0	84.71
Outlet Thalweg	1	77.30	0.0	85.79
Outlet Invert	1	77.30	0.0	87.56
Outlet Rustline Height	1	77.30	0.0	88.17
Outlet Culvert Top	1	77.30	0.0	90.69
Road Elev		99.80	0.0	96.58
Road Elev		99.80	0.0	96.69
Inlet Culvert Top	1	122.30	0.0	95.25
Inlet Thalweg	1	122.30	0.0	92.25
Inlet Culvert Invert	1	122.30	0.0	92.37
Inlet Rustline Height	1	122.30	0.0	93.40
U/S Thalweg	1	123.30	1.0	92.19
U/S Thalweg	1	127.30	5.0	92.52
U/S Water Surface Elev	1	127.30	5.0	92.71
U/S OHW elevation	1	127.30	5.0	93.23
U/S Thalweg	1	128.80	6.5	92.46
U/S Water Surface Elev		172.30	50.0	93.17
U/S Headwater		172.30	50.0	93.44
U/S Thalweg		172.30	50.0	92.85
U/S Thalweg		222.30	100.0	93.12
U/S Water Surface Elev		222.30	100.0	93.52
U/S Headwater		222.30	100.0	93.92

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

Gear Type: Minnow Trap, 1/4 in. Mesh (A)		Trap Duration(h): 1

Gear Type: Minnow Trap, 1/4 in. Mesh (B)		Trap Duration(h): 0

Fish Observations

Species: no fish collected or observed		Life History: Not Applicable
Total Fish Observed: 0	Fish Measured:	Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (0) Upstream Minnow Trap, 1/4 in. Mesh (0)

Photos

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