\

LEGEND ,

• . Bog Sorn p le lrJk eri

-FI E:LD ME A SU REMENTS 12 - 28 JUN E 1980

•

I

'\ __ ...__, -

G E· // .) r.,':,':./..;.-1

•

IIBUILOC GRAMS PER

WASHINGTON CUBIC CENTIMETER

. .

and 'NORTHERN IDAHO Mount St. Helens - May 18, 1980 Eruption

' -------------------- -- -- -- -1

--1 IO~r--c.

SUN N YSID EO

~ Mount

St. Helens

I -I

~ .._ __

W ILSON CREE K

C, C, ~

c, OEPHRAT A

6 C,

G E

t O MOSESc, C, LAKE

D,

RINGOLD

f/,0

'

/'---

C,

0 c, DAVENPOR T

C,

I

I I

0 DEER PAR K

C,

C,

SPO KANE 0

O PPO RTUNI TY QC,

·---+--;:1 00~~-Q.--­C, O HARRI

c, 0 cHE N EY

C, ------- c, a A t • SPR AGUE 6

C, 8 •

C, LA TAH~

I

• QLA MO NT ROSA LI AOc, TEKOA~ I

• BENGE O

--- D,

C,

~ !NON A O 0

C,

• D,

C,

c, PA LOUSE C,

CO LFAXO D,

C, OCOEUR D'A LENE

PL UM MER C, 0

51 MAR IES

TENSE D D,

BOV ILL <f

C,

I I

I I

' '

g coNNEll

D,

I D, C,

!~MOSCOW

,o \

- - ---- - --.1.--- -

SOURCE Dr M ichael M. Folsom & Department of Geography , University, July 1980 .

Dr. Robert R_ Quinn, Eastern Washington

\ ' \

0 10

Scale

0 20

Scale -1 n

~-'

20 30

1n Miles

40 60

Kilometers

"' "

Department of Natural Resources· Divi sion of Geology and Earth Resources

Olympia, WA 98504 .

OPEN-FI LE REPORT 80-12

I

40

80

I

50

100

/

I I

'

0 An J.c.r-.Lbn. , 1q.ao

r l

- -- ------~---··- ··--- -- -- -- -

=--

•

OFR

80 - 12

Pla t e l

0 50

Scale 1n Miles

0 50 100

'

100 · Mount PACIFIC

St. Helens -

•

NORTHWEST May 18, 1980

A§IHI

Eruption

0

--·-LEGEND

Observation Station

lsopach of Ashfall (in Centimeters)

-Scale in Kilometers

G EWU OGRAPHY

Mount St. ,-( -\V'.._..~~ Helens@)

0

,5

0

0

0

2

5

>5 0

I 0

0

I 0

0

0

\ NE

0

3

~Rll::J 0 lo 0

0 01 0

4 0

'

0 -----..J------T---

0

0 0

OULA

0 .

0

\ JI

0 0

0

0

0

0 0 0

0

0

0

0 •<S 0 0 0

>,25 0

' '<s ___ .,

0 0

O GREAT FALLS

0 BILLINGS 0

BOZEMAN O

0

0

-________ a _________ _

-~---- 0 0 0 0

0 0 JOHN DAY

o BAKER

I I

0

0

00 BOISE O O O

( -r--

0

I I '"------- _J_ 0

-------------------------· -- -------------------- - - ___ o.;,...--- --

SOURCE

I I

I I

l I

I I

0

0 CODY

0

0

0

o JACKSON HOLE 0

0

0

0

---------..,.

0

0

0 0

0

0

0 0

0

\ \

\ \

\

----------'"'t'-----\ 0

0

0

o .

0

0

r· .

. Q CASPER

0

0 0

0

0

0

0

0

0

\ \

\ \

\ \

Dr. Robert R. Quinn, Eastern Washington L ------

-. ------------------ Department of Natural Resources

\ \

Dr. Michael M . Folsom & Department of Geography, University, July 1980. Division of Geology and Earth Resources

Olympia, WA 98504

OPEN-FILE REPORT 80-12

l

OFR

8 0- 1 2

Plate 2

o . ....... .l&,. 1,0f\. - 1 9&D

J__ ------

I

0

,r

..

)

50 100 '

Scale · in M il es

0 50 100 --------------Scale ,n Kilometers

0

' . 0 ~-~~--0

0 . I'"" 0 ,'J. - 0

__ , \ I>' ~---~ ....

- -10 A ""':--::-~~--__;0~ . rg~M

'

Mount St . _Helens@)

i

.._.. -

----------/ --.. --_.;

0

0

0

0

/

1f Il IMIIE PACIFIC

Mount St .. He lens --~ .

0

'

• l; -

A§IHIWAILIL 0

C -• _.., · •

NORTHWEST M_oy 18, __ 1980 Eruption

LEGEND

Ob~ervat, on S.tat, on

lsoc hron -/ PCJ c-, f ,c_ , .

I , rJ y, ,qr t

T n I f\ f, : ·T · ~- r ~ ..-~ ( 1< y · 1v \ , ·1_ir1t , 1,r.

:·- -i y i . 9 h t , ' · rr f; )

---------, ------------------- \

- ------------- ~ 0 ----------------------- 0 6 4 ,.,, -------0

0

0

. o

0

0

0

0 -0 PENDLETON

0

0 0 JOHN DAY

- .... ,

\ '

0

0

i (I. ~

0

0

0

0

l a: ,,,

--

0 0

"BAK ER

0

I .o s - "" ,.,, I

("" 0

~/ I

0

I , I

I I

0

o o'r' "'·.,, '- ""o

~ ll ..

0

r

", OEUR \

'ALENE l O

0~ ..,.. ____ ,

' ,,.-,

t/o "

(/

...,..

fJ · o

0 0

0

O O %BOISE 0

'

0 /0 -', -<:, -;.;, 119,..,)

..,,_ 1,. -1:,

0

0

-,-: 0 ~ -

0

0

0 O MISSOUL

0

0

0 ~ ­'1 f'

.,. 1,.

\ ·a PM ___ _

r' \ 2vi~M

'

0

0

0

og

._;

~1,. 0 ,, &,.., )

0

/

8 ZE. AN

ID AH O FA LLS

0 0

I I

0 0

0

0

0 HAV RE

0

0

0 0

' o JAC K50N HO LE

I I

0 -

-_ I -I

~ V

0

0

BILLING Q

0

-?-"\ ,(

0

,a, '- 0 CODY

0

0

0

-------0

0

0

0

~ V'

Q)

0 0

0

0 0

0

\.

0

\ \

\ \

\ \

\

--------------\ 0

0

0

I .

0

-·

-- 0 ' ·, C A SPER ,. , ....

' ' . '

0

0

0

0 0

0

0

0

\ \

\ \

\

'

" '

0

. ' ------._' --------------- -_____ ._ ________ ------------- - --.w.--- 0

0 ' '

SOURCE

G ·• -, ,·-. EWU

·,_ OGRAPHY

Dr. 'Michqel M. Folsom & Department of Geography, University, July 1980,

, .

Dr. Robert R. Quinn, Easter-n Washington

'1.

,_

I

0

8 0-1 2

0 I I

L --------0 -------. ------------·-i-------- 1>11part:111entofNati,l'lll ~es . · \ Divt ston of Geo logy and Earth RHources :

y - 01 )'11P1a, WA 98504 .., '

OFR 0

0

Pl ate 3

' DPEN-FIU mi' 80-12. -

'

•

J.

•

/

I

' '

I

LEGE ND

()bse rv r1t, nn Stat, nn

---.2 s---

---s---K,lograms per Squ ar e Meter (Mult,ply By 4 45 Fo r Tons per Acre)

FIELD MEASUREMENTS 12 - 28 JUNE: 1980

C, E I• J

':~ ~.:..=-- ,

\

,_-....... _~ \._

•

I OCITIL(0)CG~AR1I§ (O)W A§Iffi JPJEIBl WASHINGTON and NORTHERN

'

May l8, 1980 Mount St. Helens -

___ .;..._ - - -------------

\ -

, .

IDAHO Eruption

A O DEER PARK

A

A A

I

I I

A ~ POKANE OPPO~TiN IT Y

.,.-- --- '----~o '-. _ 1 A ,i ", - t:, DAV[ NPO R' _.. -... ""-J 0A

COE UR D. ALENE

A

G 2 5

I I

I I

' ' \ \ \

0 10 20 30

Scale in Miles

0 20 40 60

Scale in Kilometers

~ // ......----,: A--CL( H f r'-Jf I Ii"-

/ _ , A H,\RRING TON 1o "" <, A O -----r r---5

0.

@ Mount

St. Helens

A ---~,.._;;.-,/

/ /

/ Ell~URG

~

_ · ~

-, . _,,,,.~ --V--"

-

{!J

0

oiTHEl LO

5 A

/'--- .-

A

OLA MONT RO SAll AOA EKOA~ I

A

20

A

- - ----- __ ...._ __ _

SOURCE Dr Michael M. Folsom & Deportment of Geography, University, July 1980.

6QPLUMMER O

) T MARIES

Dr. Robert R. Quinn, Eastern Washington

- - - ---······-- - - - -- . ----- -· - - - · - ·····- ·-· - - ··---- - ·-- --- ····- ····----·-· --------- ·· - - ·---- ··----- - -- -·- -·-- - ·

- \

"\ '

Department of Natural Resources Division of Geology and Earth· Resources

Olympia, WA 98504

OPEN-FILE REPORT 80-12

40

80

50

/

, I

100

OFR

80-12

•

Plate 4

\ i'

G ewu OGRAPHY

• I

0

____ ,s __ _

LEGEND

Observation

lsopach

Stat ion

1n Millimeters

FIELD MEASUREMENTS 12 - 2 8 JUNE · l 980

"--,--.-.

•

ID) IE IP 1r IHI WASHINGTON .Mou.nt St. Helens

------ ----~ -------

A A A A .e. A RAIDLE

\

ELLE NS BUR 0

0

A

S ~RIMRO~IO~·

0 A / A A t,. A WHITE AKIMA

PASS . A

--___ ___,Jd) s----;t,. __ .,..

TO 0

and -

A

SUNNYSIDEO

~ Mount

St. Helens

NORTHERN May 18, 1980

W IL SON CREEK

0 0 ct,

0

IDAHO Eruption

0

A§IHI

I

I I

ODEER PARK

0 0

0 DAV ENPO RT

0 OHARRINGTON

0 O PPO RTUN ITY 0

SP OKANEO QO O OCOE UR D ALENE

0 0 WINONA

0

0

QPLU E"-,~..._ 0 ""T '> MARIES

0 OTENSE

0

o,.,,,..-.--~

I I

I I

' '

-- ----___ ...... __ _ -/'---

/-

•

SOURCE Dr. Michael M. Folsom & Department of Geography, University, July 1980.

Dr. Robert R. Quinn, Eastern Washington

\

0 10 20 30 40

Scale 1n Miles --

0 20 40 60 80

Scale in Kilometers

\

' ~ - \

"' '

Department of Natural Resources Division of Geology and Earth Resources

Olympia, WA 98504

OPEN-FILE REPORT 80-12

,

50

I {

100

OF R

80-1 2

Pl ate 5

0

•

LEGEND

A§IHI o c· b se r vat1o n St u t :o n

-----·.:;, 5 .. ., lscpo ch of Ashfo l I ( n In che s) •

50 100

Scale 1n M il es

0 50 100 ..r--- - - ----Sea le in Ki lo meters

•

0 s" 0 '

Mount St . 1"- ~ Helens~'@-2·::, 1 .. _....-6

w~.s··

Mount PACIFIC·

St. Helens -NORTHWEST May 18, 1980 Eruption

------T -- -- - ==-=:-::::::::::::-::::::::::.--..~-==---:--:::-=-:-:-:-:-~=-----=i======:::::::::;;;;;;,,-..~~===-:::'.'.~:,0--.;;;;;----------- 0 T -------

0

- - ---a-:::==-...:;--::::=:;:::=::;::=::

0 0

0

0 O.J0 1-1 N :O Ai

0

0

0

"

0

I

loo 0

o o I o o lo 0

0 0

I \ 1!" '

~, ' E

0

0

0

0

..

0

0

0 0

0

0

0 M ISSOULA

0

0

0

---------~~~--12 5" ---

-----1--T------BA i<ER

I I

I I

0

0 0

0

O 0 0 BOISE 0 0

0

0

0

0

0

0 0

0

0

0

0 0

0

O GR EAT FALLS

BOZEMAN O

I I

0

ID AH U ~A LL'.:.

I I

OHAVRE . .;, s ,, -----

0

0

0

0 0

0

0 JA CKSO N HOI F

0

'

0 0

0

0

0

0

0

0

0

0

0

0

0 0

C ASPER ,

0

0

0

0

0

0

~

0

------- _J_ 0

---------------------------- -------------------- - - __ o,.._ __ -

I I

0

SOURCE Dr. Robert R. Quinn, Eastern Washington

I I

0

0 0

L ------------------------

\

\ \

o ·

\

0

0

\ \

0

0

Dr. Michael M . Folsom & Department of Geography, University, July 1980 . f N tural Resou rces

Department o a d Earth Resources Division of Geology an 98504

• Olympia, WA

OPEN-FILE REPORT 80-1 2

\ \

\ \

\ \

' \

0 A."4.Lr '-Df\.. - I 9&0