South_Shore_Maps_and_Drawings.pdf

14N 42E 14N 43E

15N 42E 15N 43E

Upper Snake Field Office

Montana Wyoming

Idaho

Ashton

Sugar City

St. AnthonyHenrys Access

Red Rock Pass Road

Project Location

South Shore Bank Treatment Vicinity Map Legend

Access Road Project Area Township Section

Surface Management Agency Bureau of Land Management National Park Service Private State of Idaho US Forest Service 0 1 2 3 40.5

Miles

Location Map

15N 43E

Montana

Wyoming

Idaho

Upper Snake Field

Office Ashton

St. Anthony

Henrys Lake

To Red Rock Pass Road and Highway 20

South Shore Bank Treatment Project Area Legend

Project Area Access Road Section

Surface Management Agency Bureau of Land Management Private State of Idaho US Forest Service National Park Service 0 250 500 750 1,000125

Feet

Project Location

Location Map

LOG STAGING AREA 500’

DOWN THE ROAD

TOPSOIL STAGING AREA

SEDIMET REPOSITORY

BANK EXCAVATION AREA 3:1 SLOPE

LOG TREATMENT, SEE LOG DETAIL

HIGH WATER MARK

~6480.50

KEY LOGS 5‐10’ INTO

EXISTING SHORE, CUT

TO LENGTH AS NEEDED

TOP OF PARALLEL LOG

AT HMW ELEVATION

STEP 3STEP 2STEP 1

25‐27’

5‐10’

BANK BANK WATERWATER

2‐3’ OVERLAP

2‐3’ OVERLAP

BANK WATER

CO

IR

S O

IL

W

RA

P

5‐10’

1.5’ ABOVE HWM FOR

COIR SOIL WRAP THICKNESS 4‐7’

PARALLEL LOGS:

SHOULD HAVE ROOT WADS, WITH OR WITHOUT ATTACHED

BRANCHES/LIMBS. PARALLEL LOGS SHOULD BE PLACED

HORIZONTAL AND MOSTLY PARALLEL WITH SHORE LINE,

WITH 2‐3 FOOT OVERLAP AND ROOT WAD END POINTING

IN THE WESTWARD DIRECTION. TOP, NON‐ROOTWAD END,

SHOULD BE PLACED SHOREWARD OF NEXT LOG ROOT WAD

END. PARALLEL LOGS SHOULD BE 5‐10 FEET LAKEWARD

FROM MARKED HIGH WATER MARK (HWM). TOP OF

PARALLEL LOGS SHOULD BE PLACE WITHIN 2 INCHES OF

THE MARKED HWM ELEVATION. DESIGN ASSUMES LOGS

WITH ROOTWADS ARE ROUGHLY 30 FEET IN LENGTH

WITH A 12‐20” DIAMETER.

BURIED LOGS:

SHOULD HAVE ROOTWADS, WITH OR WITHOUT ATTACHED

BRANCHES/LIMBS. BURIED LOGS SHOULD BE PLACED

HORIZONTAL ANDMOSTLY PERPENDICULAR WITH SHORE

LINE/PARALLEL LOGS, WITH ROOTWAD END POINTING

TOWARD THE LAKE. SPACING BETWEEN THE BURIED LOGS

SHOULD BE BETWEEN 25 AND 27 FEET. ROUGHLY HALF THE

LENGTH OF THESE LOGS SHOULD BE BURIED IN THE SHORE,

5‐10 FEET, WITH THE EXTRA LENTH CUT BEFORE PLACEMENT.

THE ROOTWAD END OF THESE BURIED LOGS SHOULD BE

SNUGGLY KEYED ON TOP OF THE OVERLAPPED PORTION OF

THE PARALLEL LOGS. DESIGN ASSUMES LOGS WITH ROOT

WADS ARE ROUGHLY 30 FEET IN LENGTH WITH A 12‐20”

DIAMETER.

COIR SOIL WRAP:

BUILD CONSISTS OF LAYING OUT THE COIR 70 FABRIC SO

THE LENGTHWISE CENTER LINE OF THE FABRIC IS IN LINE

WITH DESIRED SHORE LINE LOCATION, IN THIS CASE THE

HWM. SOIL IS THEN PLACED ON THE SHORE SIDE HALF OF

THE FABRIC TO THE DESIRED SOIL LIFT HEIGHT, 1.5 FEET.

THE REMAING UNCOVERED FABRIC IS THEN PULLED OVER

THE TOP OF THE SOIL AND KEYED/BURIED INTO THE BANK.

CUT LOG ENDS FROM STEP 2 CAN BE USED TO ASSIST IN

ANCHORING THE LOOSE END OF THE TOP LAYER OF COIR.

WIDTH OF FINISHED COIR SOIL WRAP SHOULD BE 4‐7 FEET.

AE

RI

AL

V

IE

W

VIEW FROM LAKE

STEP 4

A A’

A A’

COMPLETED CROSS‐SECTION

CONTAINER OR SALVAGED

WOODY PLANTINGS

WOODY PLANTINGS

EXISTING BANK

PROPOSED BANK

(ROUGH 3:1 SLOPE)

COIR SOIL WRAP

CONTAINER OR SALVAGED

WOODY PLANTINGS

BANK WATER

AE

RI

AL

V

IE

W

VIEW FROM LAKE

WOODY PLANTINGS:

CONTAINER OR SALVAGEDWOODLY PLANTINGS SHOULD

BE PLACED ALONG THE BURIED LOGMEMBERS AT BOTH

ENDS OF THE COIR TREATMENT FOR EASE OF DIGGING.

ADDITIONAL PLANTING LOCATIONS CAN BE DESIGNATED

DURING CONSTRUCTION. PLANTS SHOULD BE PLANTED

TO A MAXIMUM DEPT FOR SURVIVABILITY. (AT A LATER

DATE IN THE SPRING, SOD MATS AND SALVAGED RIPARIAN

SOD CLUMPS CAN BE PLACED BELOW THE HWM

JUXTAPOSED TO THE COIR SOIL LIFT.)

Drawing Packet - South Shore Bank Treatment