Fish Passage Improvement site 30103611

Fish Passage Site 30103611

Coordinates (dec. deg.): 51.93128°, -176.65982°
Legal Description: S095S195W22
Region: Southwest
Road Name: Old Military Road

Datum: NAD83
Quad Name / ITM: Adak C-2
AWC Stream #: 306-50-12000-2020
Stream Name: Moffett Creek

Elevation:

Site Comments: Crossing is on an old access road in the Moffett Creek Valley on Parcel 4 on the old gunnery range.

Survey Date: Sep 14, 2017

Survey ADAK17-ADK01

site photos

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Outfall height red
Road bank erosion
Structural Problem
Mechanical damage or joints parting

Comments: This information was gathered as part of the joint reconnaissance level project between the ADF&G Habitat Division and the Fish Passage Assessment Project on Adak Island. Due to time constraints full site assessments were not conducted, but base line information was collected. Road has been bermed to restrict access due to road failing from erosion on the downstream side. A side ditch coming into Moffet Creek above the inlets from the north was electrofished and coho salmon and Dolly Varden char were captured. A second electrofishing site was sample about half a mile upstream about as far as we could safely drive and hike in with a military escort. Only Dolly Varden were captured upstream, but water levels were high and there was not much holding habitat for coho. The downstream road bank erosion threatens to take out the downstream headwall and potentially wash the whole crossing out.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 41.0

Inlet Type: Headwall

Outlet Type: Headwall

Corrugation Depth(in.):

Corrugation Width(in.):

Condition Rating(1-5): 1

Approach Angle:

Sedimentation At Inlet: Unknown

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	5.0	5.0
Height(ft):	5.0	5.0
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):

Backwatered?: No

Baffles Present: No

Embedded?: No

Outfall Height:

Outfall Type: Free Fall In To Pool

Constriction Ratio:

Culvert Gradient:

Max Slope:

Max Slope Length:

Comments: Road prism starting to erode at outlet and looks like headwall might collapse. Culvert starting to come apart. Outfall height over 0.40'.

Culvert Observations:

Outfall height red
Structural Problem
Mechanical damage or joints parting
Road bank erosion

ID: 2