GEOLOGIC ATLAS OF RENVILLE COUNTY, MINNESOTA

Hydrogeologic Cross Sections By Randy J. Bradt

2017

COUNTY ATLAS SERIESRENVILLE COUNTYAtlas C-28, Plate 8 of 8

Hydrogeologic Cross SectionsE–E’ through I–I’

To accompany these atlas componentsReport, Map Figures 1–27, Plates 6–7

STATE OF MINNESOTA DEPARTMENT OF NATURAL RESOURCES

500 Lafayette Road St. Paul, MN 55155-4025 888-646-6367 or 651-296-6157 mndnr.gov

This information is available in alternative format on request.

The Minnesota DNR prohibits discrimination in its programs and services based on race, color, creed, religion, national origin, sex, public assistance status, age, sexual orientation, or disability. Persons with disabilities may request reasonable modifications to access or participate in DNR programs and services by contacting the DNR ADA Title II Coordinator at info.dnr@state.mn.us or 651-259-5488. Discrimination inquiries should be sent to Minnesota DNR, 500 Lafayette Road, St. Paul, MN 55155-4049; or Office of Civil Rights, U.S. Department of the Interior, 1849 C Street NW, Washington, DC 20240.

© 2017, State of Minnesota, Department of Natural Resources and the Regents of the University of Minnesota

Funding for this project was provided by the following:

The Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative Citizen Commission on Minnesota Resources (LCCMR).

The Clean Water Fund, which receives 33 percent of the sales tax revenue from the Clean Water, Land and Legacy Amendment, approved by voters in November 2008.

This map was compiled and generated in a geographic information system. Digital data products are available from the DNR County Geologic Atlas Program at mndnr.gov/groundwatermapping.

This map was prepared from publicly available information. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map interpretation is based. However, the DNR does not warrant the accuracy, completeness, or any implied uses of these data. Users may wish to verify critical information; sources include both the references in the report and information on file in the offices of the Minnesota Geological Survey and the DNR. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.

Base modified from Minnesota Geological Survey, Renville County Geologic Atlas, Part A, 2013.

Universal Transverse Mercator projection, zone 15N, North American Datum of 1983. North American Vertical Datum of 1988.

GIS and cartography by Randy J. Bradt and Holly Johnson. Edited by Ruth MacDonald.

Prepared and Published with the Support of the MINNESOTA ENVIRONMENT AND NATURAL RESOURCES TRUST FUND and the CLEAN WATER, LAND AND LEGACY AMENDMENT

1050

1100

1000

950

900

850

800

750

700

650

600

I’I

1050

1100

1000

950

900

850

800

750

700

650

600

Ele

vatio

n (fe

et)

1000

950

1000

975

10251025

5.47*

511 142

246246

8000

Fran

klin

Fort

Rid

gely

Cre

ek

Pur

gato

ry C

reek

Min

neso

ta R

iver

Littl

e R

ock

Cre

ek

Sta

te H

wy

19

Sta

te H

wy

4

g3

tm

u

g4

th

u

bdrk

g1

g2

th

u

1050

1100

1000

950

900

850

800

750

700

650

600

H’H

1050

1100

1000

950

900

850

800

750

700

650

600

Ele

vatio

n (fe

et) 1025

10001000

975950

1025

10.1

10

152900210

thtt

UNKN

tm tt

g4

g3

g2g2

uu

g3

bdrk

g1

tm

u

th

g1

US

Hw

y 71

Sta

te H

wy

19

Sta

te H

wy

4

Min

neso

ta R

iver

Littl

e R

ock

Cre

ek

Fort

Rid

gely

Cre

ek

Pur

gato

ry C

reek

Birc

h C

oule

e C

reek

1050

1100

1000

950

900

850

800

750

700

650

600

550

500

G’G

1050

1100

1000

950

900

850

800

750

700

650

600

550

500

Ele

vatio

n (fe

et)

950

1050

1025

1025975

1075

1000

17.2*

34.7*

6.5

5.5

2415.36290

332

210

4.26

1.98 7000

g4

tt

u

ttti

g4

g3

g1g2

tttmtt

u

u

thth

g3

g2

g1

tm

Fort

Rid

gely

Cre

ek

Birc

h C

oule

e C

reek

Tim

ms

Cre

ek

Bea

ver C

reek

Sm

ith C

reek

Min

neso

ta R

iver

Mid

dle

Cre

ek

Littl

e R

ock

Cre

ek

US

Hw

y 71

Sta

te H

wy

4

1050

1100

1000

950

900

850

800

750

700

650

F’F

1050

1100

1000

950

900

850

800

750

700

650

Ele

vatio

n (fe

et)

1050

975

1025

1000

1050

1000

1025 1075

9.30*24.3*

21.2*

10.2*

29

45 48

547

130

330

th

tt

th

u

u

teg1

tmg1

u

tith

g4

g2

UNKN

tm

g3g2

g3

ttg1

g4

Hig

h Is

land

Cre

ek

Tim

ms

Cre

ek

Birc

h C

oule

e C

reek

Bea

ver C

reek

Eas

t For

k B

eave

r Cre

ek

Min

neso

ta R

iver Sm

ith C

reek

Mid

dle

Cre

ek

US

Hw

y 71

Sta

te H

wy

4

1050

1100

1000

950

900

850

800

750

700

650

600

E’E

1050

1100

1000

950

900

850

800

750

700

650

600

Ele

vatio

n (fe

et)

1075

1025

925 1025

9751000

1050

9001050

950

32.5*

20 72

8.1

8.4

110

149

124

tt

g4

g2

tttm g1

th th

tmti

tt

u

g3

te

g1

thtt

g2

th

u

g4

g2

g3

thtm

US

Hw

y 71

US

Hw

y 21

2

Sta

te H

wy

4

Hec

tor

Eas

t For

k B

eave

r Cre

ek

Tim

ms

Cre

ek

Sac

red

Hea

rt C

reek

Sac

red

Hea

rt C

reek

(eas

t bra

nch)

Min

neso

ta R

iver Buf

falo

Cre

ek

Bea

ver C

reek

)

44° 45'

94° 45' 94° 30'

44° 30'

95° 00'95° 15'

)4

19

71

212

212

71

BuffaloLake

Hector

Bird IslandOlivia

DanubeRenvilleSacred Heart

FairfaxFranklin

Morton

B’

A A’

B

CD D’

C’

G’

F’

E’

I’

H’

E

F

G

HI

A

B

C

D

E

F

A’

B’

C’

D’

E’

F’

Symbols

Part B line of cross section not shown on this plate

Well used to generate cross sectionA A’

Part B line of cross section shown on this plate

F F’

Part A line of cross sectionA A’

1 0 1 2 3 4

SCALE 1:400 000

1 0 1 2 4 5 6 7 KILOMETERS3

5 MILES

N

ss

Aquifers and aquitards grouped by stratigraphy

Quaternary unconsolidated sediment

Quaternary aquitardsGrouped by texture ranging from highest to lowest sand content indicating relative hydraulic conductivity.

Surficial sand and gravel

Buried aquifers and aquitards

Geologic unit code Percent sand

Bedrock

bdrk

tt

ti, tm

th, g1, g2, g3, g4, te

hl, l

>50% and ≤60%

>40% and ≤50%

>30% and ≤40%

≤30%

Groundwater conditions

Symbols and labels

Land or bedrock surface

General groundwater flow direction

Geologic contact

Approximate equipotential contour; contour interval 25 feet

1050

Water table

Tritium ageDarker color in small vertical rectangle (well screen symbol) indicates tritium age of water sampled in well. Lighter color indicates interpreted age of water in aquifer.

Mixed: water is a mixture of recent and vintage waters (greater than 1 TU to less than 8 TU).

Well not sampled for tritium.

Pumping well

Vintage: water entered the ground before 1953 (less than or equal to 1 TU).

Recent: water entered the ground since about 1953 (8 to 15 tritium units [TU]).

CROSS SECTION EXPLANATION

Interpreted tritium age is indicated by background color

Interpreted tritium age is indicated by pattern color

See Report Figure 1 for geologic unit correlation.

Chloride concentration. If shown, chloride concentration equals or exceeds 5 parts per million and bromide concentration equals or exceeds 0.07 part per million.(* indicates naturally elevated values)

17.2*

If shown, nitrate concentration equals or exceeds 1 part per million.

1.98

If shown, arsenic concentration equals or exceeds 5 parts per billion.

8.1

If shown, manganese concentration equals or exceeds 100 parts per billion.

If shown, groundwater residence time in years as estimated by carbon-14 (14C) isotope analysis.

8000

110

Groundwater flowpath is unknown (deep groundwater, recent or mixed tritium age).

1 0 1 2 3 4 5 MILES

1 0 1 2 4 5 6 7 83 9 KILOMETERS

SCALE 1:100 000VERTICAL EXAGGERATION X 50

hl*l*th*siti*smtm*sttt*g1*s2g2*s3g3*s4g4*te*suUndifferentiated sediment (u)szUnknown (UNKN)

Groundwater discharges to a surface-water body.

*aquitard

LOCATION DIAGRAM