U.S. Department of the Interior

U.S. Geological Survey

Scientific Investigations Map 3393

Sheet 2 of 2

Prepared in cooperation with the 

City of Sioux Falls, South Dakota

Delineation of the Hydrogeologic Framework of the Big Sioux Aquifer near Sioux Falls, South Dakota, Using Airborne Electromagnetic Data

By Kristen J. Valseth, Gregory C. Delzer, and Curtis V. Price

2018

Big Sioux River

Big Sioux River

Big Sioux River

DATUM IS GEODETIC REFERENCE SYSTEM 1980

VERTICAL EXAGGERATION x10

NE

SW METERS

420

440

400

380

360

Sioux Quartzite

Glacial till

Alluvial deposit

EXPLANATION

Sioux Falls Regional Airport boundary

Fence diagram section

Direct current resistivity transect

A A' Line of section (fig. 2)

0

0

0.5

0.5

1.0

1.0 MILES

2.0 KILOMETERS

R. Sioux

DITCH ROAD

SIOUX FALLS

REGIONAL

AIRPORT

A A'

§ ̈¦I-29

§ ̈¦I-90

Baltic

Big

Big Sioux R.

Dell Rapids

Sioux Falls

-96°46' -96°44' -96°42' -96°40'

-96°48' -96°46' -96°44' -96°42'

43°48'

43°46'

43°44'

43°42'

43°40'

43°38'

43°36'

43°34'

43°48'

43°46'

43°44'

43°42'

43°40'

43°38'

43°36'

43°34'

Baltic

DITC

H

R

OA

D

SIOUX FALLS

REGIONAL

SIOUX FALLS

REGIONAL

AIRPORT

A A'

0 0.75 1.5 MILES

0 1.5 3 KILOMETERS

§ ̈¦I-29

§ ̈¦I-90

Big Sioux R

Dell Rapids

Sioux Falls

R

B Sioux ig

Map image is the intellectual property of Esri and is used 

herein under license. Copyright © 2017 Esri and its 

licensors. All rights reserved.

Web Mercator Auxiliary Sphere, 1984

Figure 5. Three-dimensional fence diagram of the delineated hydrogeologic framework of the study area near Sioux Falls, South Dakota.

References Cited

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Conversion Factors

International System of Units to U.S. customary units

Multiply By To obtain

Length

meter (m) 3.281 foot (ft) 

kilometer (km) 0.6214 mile (mi)

Area

square meter (m2) 10.76 square foot (ft2) 

Volume

cubic meter (m3) 35.31 cubic foot (ft3)

cubic meter (m3) 1.308 cubic yard (yd3) 

cubic meter (m3) 0.0008107 acre-foot (acre-ft) 

Datum

Vertical coordinate information is referenced to the Geodetic Reference System 1980 (GRS 80).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Elevation, as used in this report, refers to distance above the vertical datum.

Abbreviations

AEM airborne electromagnetic 

DC direct current

USGS U.S. Geological Survey

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply 

endorsement by the U.S. Government.

This map or plate is offered as an online-only, digital publication. Users should be aware that, because of differences 

in rendering processes and pixel resolution, some slight distortion of scale or color may occur when viewing it on a 

computer screen or when printing it on an electronic plotter, even when it is viewed or printed at its intended publication 

scale.

Digital files available at https://doi.org/10.3133/sim3393.

Suggested citation: Valseth, K.J., Delzer, G.C., and Price, C.V., 2018, Delineation of the hydrogeologic framework of the 

Big Sioux aquifer near Sioux Falls, South Dakota, using airborne electromagnetic data: U.S. Geological Survey Scientific 

Investigations Map 3393, 2 sheets, https://doi.org/10.3133/sim3393. 

ISSN 2329-132X (online)

https://doi.org/10.3133/sim3393