I900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
Ele
vatio
n (fe
et)
900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
I’
Mis
siss
ippi
Riv
er
Frid
ley
Ric
e C
reek
860
840
820
Oo
cr
sx
_w
rt
slOsp
_j
pt
_e
_tc
_tc lower
lc
se
ss
nu
rt
_m
xtceOs
lc
_sl
sc
H
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
900
950
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
H’
Lino
Lak
es
Bla
ine
Ric
e La
ke
Mis
siss
ippi
Riv
er
She
rman
Lak
e
Coo
n R
apid
s
Res
hana
u La
ke
War
ds L
ake
Coo
n C
reek
840
880
860
900
6.81
u
Os
nu
sp
sc
_tc
_tc_tc lower
_tc lower
_sl
_slu
_w
se
sr
_e
_j
_m
xt
rt
sesx
fs
fs nu
lc
ss
scce
_j
pt_j
_sl rt
Osp
sl
cr
sllc
sr
sx
ce ce
xt
xt
cece ce
lc
_j Oo
fs
G
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
900
950
850
800
750
700
650
600
550
500
450
400
350
G’
Mis
siss
ippi
Riv
er
Pel
tier L
ake
Loch
ness
Par
k
Coo
n C
reek
Geo
rge
Wat
ch L
ake
880860
840
880
900
50002000
56.6
12.194
vt
ce
ss
ce
_sl
_sl_sl
_sl
sx
crce cr
Os
_j
sp
sesc
xt
sp
sl
_w
urt
Oo
rt
sp
lc
_j xt
_tc_tc
_tc_tc lower _tc lower
_tc lower
rtrtrt
lc
cert
_j
sl
nu
sx
vt
lc
u
_e
nu
scsc
fs
cr
cecese
xtce
F
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
300
900
950
850
800
750
700
650
600
550
500
450
400
350
300
F’
Ron
deau
Lak
e
Rum
Riv
er
Mis
siss
ippi
Riv
er
Cro
oked
Lak
e
Bun
ker H
ills
Par
k
Lexi
ngto
n Av
enue
900
860
840
880
4000
10,000
13.4
11.3
13.4
42.0
41.1
25.6
120*
20,00032.1*
21.0*
184lc
ce
ss
sx
cr
xtce
lclc
ce
sp
_e
_e
sprt
sr
_tc
_w
scce
rt_j
u
xtrt_j
xtrt
ce
ss
u
_tc_tcrt
cr
_tc
se
_m
upt
nu
u
_sl_sl
Oo
sl
_tc lower
_tc lower
fs
sc
nu
fs
nu
_sl
ce
lcnu
cext
cr
se
sp
cr
_tc
45°15' N.
45°22'30" N.
93°30' W.
93°15' W.
93°22'30" W.
93°07'30" W.
45°07'30" N.)610
10
)47
)47)65
)242
35W
35E
694
ColumbiaHeights
Anoka
Centerville
St. Francis
CirclePines
B
C
D
E
F
G
H
A
B’
B B’C’
C C’
D’
D D’
E’
E E’
F’
F F’
G’
H’
I I’
A’A A’
1 0 1 2 3 4
SCALE 1:300 000
1 0 1 2 4 5 6 7 83 9 KILOMETERS
5 MILES
Symbols
Part B line of cross section shown on this plate
Well used to generate cross sectionF F’
Part B line of cross section not shown on this plate
A A’
Part A line of cross sectionA A’
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
COUNTY ATLAS SERIESANOKA COUNTY
ATLAS C-27, PART B, PLATE 9 of 9Hydrogeologic Cross Sections
F–F’ through I–I’
Hydrogeologic Cross SectionsBy James A. Berg
2016
STATE OF MINNESOTADEPARTMENT OF NATURAL RESOURCESECOLOGICAL AND WATER RESOURCES DIVISION
Prepared and Published with the Support of the MINNESOTA ENVIRONMENT AND NATURAL RESOURCES TRUST FUND
and the CLEAN WATER, LAND AND LEGACY AMENDMENT
This map was compiled and generated in a geographic information system (GIS). Digital data products, including chemistry data, are available from the Minnesota Department of Natural Resources (DNR) Ecological and Water Resources Division at http://www.mndnr.gov/waters.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 interpreta-tion 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, Anoka 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 James A. Berg and Holly Johnson. Edited by Ruth MacDonald.
GEOLOGIC ATLAS OF ANOKA COUNTY, MINNESOTA
The DNR Information Center
Minnesota Department of Natural ResourcesEcological and Water Resources Division500 Lafayette RoadSt. Paul, MN 55155-4025For more information call 651-296-6157 or 888-646-6367http://www.mndnr.gov/waters
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 [email protected] 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.
© 2016, State of Minnesota, Department of Natural Resourcesand the Regents of the University of Minnesota
LOCATION DIAGRAM
I900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
Ele
vatio
n (fe
et)
900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
I’
Mis
siss
ippi
Riv
er
Frid
ley
Ric
e C
reek
860
840
820
Oo
cr
sx
_w
rt
slOsp
_j
pt
_e
_tc
_tc lower
lc
se
ss
nu
rt
_m
xtceOs
lc
_sl
sc
H
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
900
950
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
H’
Lino
Lak
es
Bla
ine
Ric
e La
ke
Mis
siss
ippi
Riv
er
She
rman
Lak
e
Coo
n R
apid
s
Res
hana
u La
ke
War
ds L
ake
Coo
n C
reek
840
880
860
900
6.81
u
Os
nu
sp
sc
_tc
_tc_tc lower
_tc lower
_sl
_slu
_w
se
sr
_e
_j
_m
xt
rt
sesx
fs
fs nu
lc
ss
scce
_j
pt_j
_sl rt
Osp
sl
cr
sllc
sr
sx
ce ce
xt
xt
cece ce
lc
_j Oo
fs
G
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
900
950
850
800
750
700
650
600
550
500
450
400
350
G’
Mis
siss
ippi
Riv
er
Pel
tier L
ake
Loch
ness
Par
k
Coo
n C
reek
Geo
rge
Wat
ch L
ake
880860
840
880
900
50002000
56.6
12.194
vt
ce
ss
ce
_sl
_sl_sl
_sl
sx
crce cr
Os
_j
sp
sesc
xt
sp
sl
_w
urt
Oo
rt
sp
lc
_j xt
_tc_tc
_tc_tc lower _tc lower
_tc lower
rtrtrt
lc
cert
_j
sl
nu
sx
vt
lc
u
_e
nu
scsc
fs
cr
cecese
xtce
F
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
300
900
950
850
800
750
700
650
600
550
500
450
400
350
300
F’
Ron
deau
Lak
e
Rum
Riv
er
Mis
siss
ippi
Riv
er
Cro
oked
Lak
e
Bun
ker H
ills
Par
k
Lexi
ngto
n Av
enue
900
860
840
880
4000
10,000
13.4
11.3
13.4
42.0
41.1
25.6
120*
20,00032.1*
21.0*
184lc
ce
ss
sx
cr
xtce
lclc
ce
sp
_e
_e
sprt
sr
_tc
_w
scce
rt_j
u
xtrt_j
xtrt
ce
ss
u
_tc_tcrt
cr
_tc
se
_m
upt
nu
u
_sl_sl
Oo
sl
_tc lower
_tc lower
fs
sc
nu
fs
nu
_sl
ce
lcnu
cext
cr
se
sp
cr
_tc
45°15' N.
45°22'30" N.
93°30' W.
93°15' W.
93°22'30" W.
93°07'30" W.
45°07'30" N.)610
10
)47
)47)65
)242
35W
35E
694
ColumbiaHeights
Anoka
Centerville
St. Francis
CirclePines
B
C
D
E
F
G
H
A
B’
B B’C’
C C’
D’
D D’
E’
E E’
F’
F F’
G’
H’
I I’
A’A A’
1 0 1 2 3 4
SCALE 1:300 000
1 0 1 2 4 5 6 7 83 9 KILOMETERS
5 MILES
Symbols
Part B line of cross section shown on this plate
Well used to generate cross sectionF F’
Part B line of cross section not shown on this plate
A A’
Part A line of cross sectionA A’
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
I900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
Ele
vatio
n (fe
et)
900
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
I’
Mis
siss
ippi
Riv
er
Frid
ley
Ric
e C
reek
860
840
820
Oo
cr
sx
_w
rt
slOsp
_j
pt
_e
_tc
_tc lower
lc
se
ss
nu
rt
_m
xtceOs
lc
_sl
sc
H
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
900
950
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
H’
Lino
Lak
es
Bla
ine
Ric
e La
ke
Mis
siss
ippi
Riv
er
She
rman
Lak
e
Coo
n R
apid
s
Res
hana
u La
ke
War
ds L
ake
Coo
n C
reek
840
880
860
900
6.81
u
Os
nu
sp
sc
_tc
_tc_tc lower
_tc lower
_sl
_slu
_w
se
sr
_e
_j
_m
xt
rt
sesx
fs
fs nu
lc
ss
scce
_j
pt_j
_sl rt
Osp
sl
cr
sllc
sr
sx
ce ce
xt
xt
cece ce
lc
_j Oo
fs
G
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
900
950
850
800
750
700
650
600
550
500
450
400
350
G’
Mis
siss
ippi
Riv
er
Pel
tier L
ake
Loch
ness
Par
k
Coo
n C
reek
Geo
rge
Wat
ch L
ake
880860
840
880
900
50002000
56.6
12.194
vt
ce
ss
ce
_sl
_sl_sl
_sl
sx
crce cr
Os
_j
sp
sesc
xt
sp
sl
_w
urt
Oo
rt
sp
lc
_j xt
_tc_tc
_tc_tc lower _tc lower
_tc lower
rtrtrt
lc
cert
_j
sl
nu
sx
vt
lc
u
_e
nu
scsc
fs
cr
cecese
xtce
F
Ele
vatio
n (fe
et)
900
950
850
800
750
700
650
600
550
500
450
400
350
300
900
950
850
800
750
700
650
600
550
500
450
400
350
300
F’
Ron
deau
Lak
e
Rum
Riv
er
Mis
siss
ippi
Riv
er
Cro
oked
Lak
e
Bun
ker H
ills
Par
k
Lexi
ngto
n Av
enue
900
860
840
880
4000
10,000
13.4
11.3
13.4
42.0
41.1
25.6
120*
20,00032.1*
21.0*
184lc
ce
ss
sx
cr
xtce
lclc
ce
sp
_e
_e
sprt
sr
_tc
_w
scce
rt_j
u
xtrt_j
xtrt
ce
ss
u
_tc_tcrt
cr
_tc
se
_m
upt
nu
u
_sl_sl
Oo
sl
_tc lower
_tc lower
fs
sc
nu
fs
nu
_sl
ce
lcnu
cext
cr
se
sp
cr
_tc
45°15' N.
45°22'30" N.
93°30' W.
93°15' W.
93°22'30" W.
93°07'30" W.
45°07'30" N.)610
10
)47
)47)65
)242
35W
35E
694
ColumbiaHeights
Anoka
Centerville
St. Francis
CirclePines
B
C
D
E
F
G
H
A
B’
B B’C’
C C’
D’
D D’
E’
E E’
F’
F F’
G’
H’
I I’
A’A A’
1 0 1 2 3 4
SCALE 1:300 000
1 0 1 2 4 5 6 7 83 9 KILOMETERS
5 MILES
Symbols
Part B line of cross section shown on this plate
Well used to generate cross sectionF F’
Part B line of cross section not shown on this plate
A A’
Part A line of cross sectionA A’
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
CROSS SECTION EXPLANATION
Groundwater flowpath is unknown.
Groundwater flows laterally.
Tritium concentrations may be artificially elevated by high capacity pumping.
Groundwater moves from an overlying buried aquifer to an underlying buried aquifer.
Groundwater conditionsGroundwater moves from an overlying surficial aquifer to a buried aquifer.
If shown, chloride concentration equals or exceeds 5 parts per million. (* indicates naturally elevated values)
41.1
If shown, groundwater residence time in years as estimated by carbon-14 (14C) isotope analysis.
3000
Symbols and labels
Lake
Land or bedrock surface
General groundwater flow direction
Geologic contact
Approximate equipotential contour; contour interval 20 feet900
Water table
Direction of fault movement, arrows indicate relative movement
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).
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 TU).
Cold War era: water entered the ground during the peak period of atmospheric tritium concentration during nuclear bomb testing, 1958–1959 and 1961–1972 (greater than 15 tritium units [TU]).
If shown, arsenic concentration equals or exceeds 10 parts per billion.13.4
Well not sampled for tritium.
Groundwater discharges to a surface-water body.
Quaternary aquitardsGrouped by texture ranging from highest to lowest sand content indicating relative hydraulic conductivity.
Hydrogeologic unit code Percent sandcr, ce, rt, lc (sandy)nuxt, ptlc
> 60%
> 40% and ≤ 50%
> 30% and ≤ 40%
≤ 30%
slscsesxsrspUndifferentiated sediment (u)
ss
Aquifers and aquitards grouped by stratigraphy
Surficial sand
Buried sand and gravel and Quaternary sediment
Bedrock St. Peter
Shakopee
Oneota Dolomite*
Jordan
St. Lawrence Formation*
Upper Tunnel City
Lower Tunnel City*
Wonewoc
Eau Claire Formation*
Mt. Simon (not shown in areas where data were not available)
Enhanced-permeability zone near the bedrock surface
Osp
Os
Oo
_j
_sl
_tc
_w
_e
_m
Interpreted tritium age is indicated by background color
Interpreted tritium age is indicated by pattern color
_tclower
*aquitard
Recommended
