Base from U.S. Geological Survey and/or

Washington Division of Geology and Earth Resources

digital data, 1983, 1:100,000

Universal Transverse Mercator projection, Zone 10

Horizontal Datum: North American Datum of 1927 (NAD 27)

U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

SCIENTIFIC INVESTIGATIONS REPORT 2009–5270

Surficial hydrogeology, hydrogeologic units, and selected wells, lower Skagit River basin—PLATE 2

Prepared in cooperation with the

SKAGIT COUNTY PUBLIC WORKS DEPARTMENT

WASHINGTON STATE DEPARTMENT OF ECOLOGY

science for a changing world SKAGIT COUNTY PUBLIC UTILITY DISTRICT NO. 1 Savoca, M.E., Johnson, K.H., Sumioka, S.S., Olsen, T.D., Fasser, E.T., and Huffman, R.L., 2009, Hydrogeologic Framework, Groundwater Movement, 

and Water Budget in Tributary Subbasins and Vicinity, Lower Skagit River Basin, Skagit and Snohomish Counties, Washington

Map and Hydrogeologic Sections Showing Surficial Hydrogeology, Hydrogeologic Units, and Locations of Selected Wells in Tributary Subbasins and Vicinity, Lower Skagit River Basin, Washington

By

Mark E. Savoca, Kenneth H. Johnson, Steven S. Sumioka, Theresa D. Olsen, Elisabeth T. Fasser, and Raegan L. Huffman

2009

0 1 2 3 4 5 MILES

0 1 2 3 4 5 KILOMETERS

0 1 2 3 4 MILES

0 1 2 3 4 KILOMETERS

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122°20' 122°10'

48°25'

48°20'

48°15'

R. 3 E. R. 4 E. R. 5 E. R. 6 E.

T. 32 N.

T. 33 N.

T. 34 N.

T. 35 N.

North

Fork

Skagit

River

Turner

Creek

Walker

Creek

Mundt

Creek

Skagit River

Carpenter

Cre

ek

Bulson

Creek

Fisher

Creek

Lake

McMurray

Sixteen

Lake

Johnson Creek

Devils

Lake

Big

Lake

Sa ndy

C reek

Ten

Lake

Clear

Lake

Beaver

Lake

Lake

Creek

Barney

Lake

Pilchuck

Creek

South

Fork

North

Fork

Skagit

River

Turner

Creek

Walker

Creek

Mundt

Creek

Skagit River

Carpenter

Cre

ek

Bulson

Creek

Fisher

Creek

Lake

McMurray

Sixteen

Lake

Johnson Creek

Devils

Lake

Big

Lake

Sa ndy

C reek

Ten

Lake

Clear

Lake

Beaver

Lake

Lake

Creek

Barney

Lake

Pilchuck

Creek

South

Fork

East

Fork

Nookachamps

Creek

East

Fork

Nookachamps

Creek

Nookachamps

Cre

ek

Nookachamps

Cre

ek

East

Fork

Nookachamps

Creek

East

Fork

Nookachamps

Creek

Nook achamps

Creek

Nook achamps

Creek

Skagit Bay

17C01

20N01

19M01 19K01

18A03

34E01

25B01

23R01

23Q01 23N02

22Q01

21C01 19A01

17R01

09R01

03N01

31F01

31B01

30C02

19A01

17N02

17N01

17E01

08P01

08L02

06J01

34Q02

33Q01

33K01

33C03

32P01

31Q01 31R01

21G01

08J01

04M01

04N01

04N02

04D01

04C01

04A03

18A01

31C02

30C01

33F01

28F01

06K01

15R01

06G01

05A01

06K01

20P01

03A01

A

A'

B

B'

C

D

C'

D'

B B'

EXPLANATION

EXPLANATION

Line of hydrogeologic section

Boundary of tributary subbasin

Well used in construction of 

hydrogeologic sections

Sedimentary aquifer

Igneous and metamorphic

 bedrock unit

Hydrogeologic unit

Contact—approximately located,

 dashed where uncertain

Alluvial and recessional

 outwash aquifer

Till confining unit

Advance outwash aquifer

Glaciolacustrine and distal

 outwash confining unit

Inter-glacial alluvial aquifer

Older till confining unit

Older outwash and

 alluvial aquifer

04A03

Fault–dashed where concealed

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Water

50

0

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50

NAVD 88

METERS FEET

D'

N

Sea

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200

FEET

D

S

North American Datum of 1983 (NAD 83) VERTICAL EXAGGERATION x 20 North American Vertical Datum of 1988 (NAVD 88) SECTION A–A' 33N/05E-31F01 33N/05E-31C02 33N/05E-31B01 33N/05E-30C01 33N/05E-30C02 33N/05E-19A01 33N/05E-17N02 33N/05E-17N01 33N/05E-17E01 33N/05E-17C01 33N/05E-08P01 33N/05E-08L02 33N/05E-06J01 33N/05E-06K01 33N/05E-06G01 34N/05E-19K01 34N/05E-18A01 34N/05E-18A03 34N/05E-06K01 Lake Creek Lake Creek E Fk Nookachamps Creek Mundt Creek Turner Creek Beaver Lake Creek

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SECTION

A–A'

34N/05E-19K01

Well No. (numbering system

 explained in text)

Well used in construction

 of section

Intersection of two 

 hydrogelogic sections

Fisher CreekBulson CreekCarpenter CreekNookachamps CreekSkagit River

32N/04E-08J0132N/04E-04N0232N/04E-04N0132N/04E-04M0132N/04E-04C0133N/04E-33Q0133N/04E-33K0133N/04E-33F0133N/04E-33C0333N/04E-28F0133N/04E-21G0134N/04E-34E0134N/04E-22Q0134N/04E-15R0134N/04E-09R0134N/04E-03N01

0

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C'

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SECTION

A–A'

SECTION

B–B'

FEET

Sea

Level

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1,400 

FEET

C

S

North American Datum of 1983 (NAD 83) North American Vertical Datum of 1988 (NAVD 88)

50

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200

150

100

100

50

NAVD 88

400

METERS

VERTICAL EXAGGERATION x 20

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33N/04E-31Q0133N/04E-31R0133N/04E-32P0132N/04E-05A0132N/04E-04D0132N/04E-04C0132N/04E-04A03

Fisher Creek

33N/04E-34Q0232N/04E-03A01

400

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FEET

B

W

North American Datum of 1983 (NAD 83)

0

600

400

200

1,000

800

200

400

B'

E

FEET

North American Vertical Datum of 1988 (NAVD 88)

50

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150

100

100

50

NAVD 88

METERS

SECTION

C–C'

VERTICAL EXAGGERATION x 20

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Skagit RiverNookachamps CreekE Fk Nookachamps Creek

34N/04E-19A0134N/04E-17R0134N/04E-21C0134N/04E-22Q0134N/04E-23N0234N/04E-23Q0134N/04E-23R0134N/04E-25B0134N/05E-19MO134N/05E-19K0134N/05E-20N0134N/05E-20P01

SECTION

C–C'

SECTION

D–D'

400

Sea

Level

600

400

200

1,000

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200

FEET

A

W

North American Datum of 1983 (NAD 83)

0

600

400

200

1,000

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400

A'

E

FEET

North American Vertical Datum of 1988 (NAVD 88)

50

300

250

200

150

100

100

50

NAVD 88

METERS

VERTICAL EXAGGERATION x 20

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Darrington-Devils Mountain Fault Zone