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(/2

1804

1804

Cartographic Compilation: E. L. Kadrmas & S.S. Kran ich

103o 37' 30"

48o 15' 00"103o 30' 00"

103o 30' 00"103o 37' 30"48o 07' 30" 48o 07' 30"

48o 15' 00"

Areas of LandslidesWilliston East Quadrangle, North Dakota

(BLACKTAIL LAKE SE) (SPRING BROOK)

(OTTER TAIL CREEK)

(WILL

ISTON SW) (LAKE JESSIE)

(WILL

ISTO

N W

EST)

(WILLISTON SE)

(STOC

KYAR

D CR

EEK)

North Dakota Geological Survey24K: Wlst E - l

Edward C. Murphy, State GeologistLynn D. Helms, Director Dept. of Mineral Resources

R. 100 W.R. 101 W.

T. 155 N.

T. 154 N.

Other Features

US Highway(/2

State Highway1804

Paved Road

Unpaved Road

MN

1976 Magnetic North Declinat ion at Center of Sheet

13o 30'

Williston East Quadrangle, North Dakota

Edward C. Murphy2012

Geologic Symbols

Known contact between two geologic units.

UNIT DESCRIPTIONS

QUATERNARY SYSTEM

RECENT/PLEISTOCENE

Geology Undifferentiated

Variable mixture of strata and deposits that have slid to the base ofsteep slopes.

Landslide DepositsQls

Landslides identified on this quadrangle were mapped from stereopairs, black and white 1:20,000 scale aerial photographs flownbetween 6-21-58 and 9-7-58. As a result these maps can be usedto identify areas that are vulnerable to slope failure, but are not anup to date assessment of all landslides for the area.

0 0.5 1Miles

1:24,000Scale

Standard Paral lels 48 o 07' 30" and 48o 15' 00"

USGS 7.5 Minute Topograph ic Map Con tour Interval 10 Feet

Lambert Conformal Conic Projection1927 North American Datum NGVD 1929

Road Layer Rectified to 2003 NAIP Digi tal Orthophoto