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MESA

BACA

PARK

YUMA

LAS ANIMAS

ROUTT

GUNNISON

LINCOLN

LARIMER

GARFIELD

PUEBLO

BENT

SAGUACHE

KIOWA

LOGAN

RIO BLANCO GRAND

EL PASO

EAGLE

ELBERT

MONTROSE

LA PLATA

DELTA

WASHINGTON

OTERO

KIT CARSON

JACKSON

ADAMS

CHEYENNE

PROWERS

MONTEZUMA

FREMONT

PITKIN

MORGAN

HUERFANO

CONEJOSCOSTILLA

HINSDALE

ARCHULETA

DOLORES

CHAFFEE

SAN MIGUEL

MINERAL

CUSTER

DOUGLAS

CROWLEY

PHILLIPS

OURAY

LAKE

TELLER

ARAPAHOE

RIO GRANDE

SEDGWICK

SAN JUAN

GILPIN

SUMMIT

BOULDER

ALAMOSA

JEFF

ERSO

N

CLEAR CREEK

DENVER

BROOM

FIELD

AURORA

DENVER

COLORADO SPRINGS

PUEBLO

ARVADA

LAKEWOOD

GREELEY

THORNTON

FORT COLLINS

BOULDERBRIGHTON

ERIE

PARKER

BROOMFIELD

GRAND JUNCTION

CASTLE ROCK

LOVELAND

COMMERCE CITY

LONGMONT

FOUNTAIN

WINDSOR

SNOWMASS VILLAGE

SILVER CLIFF

LITTLETON

VAIL

GOLDEN

AVON

CANON CITY

MONTROSE

DELTA

FRUITA

SILT

CRAIG

MEAD

ORCHARD CITY

RIFLE

CORTEZ

DACONO

LAMAR

TRINIDAD

FIRESTONE

WINTER PARK

MILLIKEN

FREDERICK

STERLING

DURANGO

EVANS

WRAY

RANGELY

LARKSPUR

STEAMBOAT SPRINGS

MEEKER

NORTHGLENN

ESTES PARK

YUMA

ASPEN

BRUSH

FLORENCE

ALAMOSA

MONUMENT

HAYDEN

GYPSUM

SALIDA

BRECKENRIDGE

WOODLAND PARK

LA JUNTA

GUNNISON

NUNN

FORT LUPTON

FORT MORGAN

LIMON

BUENA VISTA

WILLIAMSBURG

FRISCO

PAGOSA SPRINGS

BLANCA

GLENWOOD SPRINGS

PALMER LAKE

EATON

FRASER

BLUE RIVER

BENNETT

AKRON

GRANBY

MOFFAT

SEVERANCE

BASALT

WALSENBURG

LA VETA

RIDGWAY

MANITOU SPRINGS

HUDSON

HUGO

JOHNSTOWN

LYONS

SANFORD

EAGLE

CEDAREDGE

BURLINGTON

RICO

CARBONDALE

LONETREE

AULT

OLATHE

MINTURN

BERTHOUD

NEW CASTLE

ROCKY FORDOURAY

HOLLY

PALISADE

KREMMLING

LAS ANIMAS

NEDERLAND

ELIZABETH

PAONIA

NUCLA

LEADVILLE

MANASSA

PARACHUTE

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ROCKVALE

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BAYFIELD

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WELLINGTON

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KIM

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CALHAN

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HASWELL

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LA SALLE

GRAND LAKE

BRANSON

HAXTUN

GRANADA

FLAGLER

DOLORES

GILCREST

KIOWA

SILVERTON

MANCOS

DINOSAUR

TELLURIDE

WALSHSPRINGFIELD

CRIPPLE CREEK

ARRIBAALMA

GEORGETOWN

PONCHA SPRINGS

PAOLI

ECKLEY

HOTCHKISS

GROVER

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KERSEY

BOONE

SAN LUIS

AGUILAR

FLEMING

SWINK

KIT CARSON

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LA JARA

WILEY

ANTONITO

VICTOR

JAMESTOWN

CRESTED BUTTE

DOVE CREEK

PITKIN

CREEDE

WALDEN

VONA

OVID

DEBEQUE

YAMPA

SAGUACHE

KEENESBURG

MARBLE

EMPIRE

PEETZ

SUGAR CITY

HARTMAN

SEDGWICK

IGNACIO

COLLBRAN

HOOPER

HOT SULPHUR SPRINGS

CROOK

OAK CREEK

CROWLEY

RYEOPHIR

VILAS

CRESTONE

RED CLIFF

CRAWFORD

MANZANOLA

PRITCHETT

SHERIDAN LAKE

CHERAW

TWO BUTTES

CAMPO

MERINO

NORWOOD

COKEDALESTARKVILLE

MONTEZUMA

WESTMINSTER

LOUISVILLELAFAYETTE

WHEAT RIDGE

ENGLEWOOD

SUPERIOR

DILLON

SILVERTHORNE MORRISON

HOLYOKE

MONTE VISTA

BLACK HAWK

FOXFIELD

JULESBURG

FEDERAL HEIGHTS

CENTRAL CITY

NAT URITA

FOWLER

EDGEWATERIDAHO SPRINGS

CHEYENNE WELLS

GLENDALE

STRATTONSEIBERT

GREEN MOUNTAIN FALLS

RAMAH

ROMEO

HILLROSE

TIMNATH

SILVER PLUME

BETHUNE

OLNEY SPRINGS

LOG LANE VILLAGE

GARDEN CITY

SAWPIT

C O L O R A D O ' S E A R T H Q U A K E a n d F A U L T M A PC O L O R A D O ' S E A R T H Q U A K E a n d F A U L T M A P

0 10 20 30 40 505Miles

0 20 40 60 8010Kilometers

Approximate location of pre-instrumentalearthquake epicenters (~1867 to 1961). Squaresize indicates the maximum Modified Mercalli intensity for the earthquake (see back of map for intensity scale).

Map Compilation byMatthew L. Morgan,

Colorado Geological Survey,2006-2007

S a n g r e d e C r i sto f a u l t

S a n g r e d e C r i sto f a u l t

Sawatch faul tSawatch faul t

Instrumentally located epicenters (~1962 to 2006)Size of dot indicates magnitude.

EARTHQUAKE EPICENTERS

3-3.9

5-5.54-4.9

VII")

VI")

V")

IV")

I-III")

C h

e r aw f

a u lt

_̂1882 Earthquake; magnitude estimated at 6.6 +/- 0.6 (Spence and others, 1996)

QUATERNARY FAULTSGeologically young faults that displace sediments or rocks deposited during the Quaternary Period

(approximately past 2 million years).Known or suspected fault displacement of late Quaternary deposits (approximately past 130,000 years)Known or suspected fault displacement ofmiddle to early Quaternary deposits(approximately past 130,000 to 2 million years old)

Permanent Seismic Stations -Includes four seismographs currentlyoperated by the U.S. Geological Surveyas part of the Advanced National SeismicSystem.

XY

37° N

103° W

105° W

109° W37°0'0"N

39° N

41° N 107° W109° W

105° W 103° W 41° N

39° N

38° N

W Y O M I N G N E B R A S K A

KA

NS

AS

O K L A H O M AN E W M E X I C O

UT

AH

107° W

Showing Locations of Historical Earthquakes and Known or Suspected Geologically Young Faults108° W

106° W 104° W

40° N

104° W106° W108° W

38° N

40° N

1:1,150,000Scale

This map does not meet U.S. National Map Accuracy Standards and is intended

for general reference only.

DATA SOURCESEarthquake epicenters:

U.S. Geological Survey; Colorado Geological Survey; Kirkham and others, 2004; Kirkham and Rogers, 2000

Faults: Colorado Geological Survey; Widmann and others, 1998

Seismic Stations:U.S. Geological Survey

Cities and Towns