Frank O'Bannon, Governor Department of Natural Resources Division of Water John Goss, Director Aquifer Systems Map 01-B BEDROCK AQUIFER SYSTEMS OF DUBOIS COUNTY, INDIANA R. 3 W. R. 2 W. R. 4 W. R. 3 W.

14 13 18 17 16 15 14 13 15 Wolf R. 6 W. R. 5 W. e Creek Hillham Bedrock Aquifer Systems 17 15 14 13 18 Thales d

r a e o v C i R C er iv r u e R e R hit y z v e W 21 s 22 23 c 24 In Dubois County rock types exposed at the bedrock surface range from relatively unproductive shales to moderately o 20 o t R. 5 W. R. 4 W. k 23 24 19 t a W i r r

o R h l 20 F G 5 o 19 t R productive limestones and sandstones. Three bedrock aquifer systems are identified for Dubois County based on 7 s a W 23 24 y a o d 8 r

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d 22 r d bedrock surface lithology. The susceptibility of bedrock aquifer systems to surface contamination is largely o 20 k 22 a F t Portersville c o as 22 19 i E 24 E

R 21 H dependent on the type and thickness of the overlying sediments. Just as recharge for bedrock aquifers cannot exceed

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9 n that of overlying unconsolidated deposits, susceptibility to surface contamination will not exceed that of overlying

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C o deposits. However, because the bedrock aquifer systems have complex fracturing systems, once a contaminant has

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y 26 25 26 25 30 29 28 27 t ad been introduced into a bedrock aquifer system, it will be difficult to track. 30 29 28 27 n Ro

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C c 27 Haysville Cuz Cuzco Road W Mississippian--Buffalo Wallow, Stephensport, and West Baden Groups Aquifer System SR 56

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0 l r tt k t 2 i e e L e Cuzco r 36 d 33 This Upper Mississippian bedrock aquifer system is limited to a small area in the eastern portion of Dubois County. s r 31 32 34 35 a 34 36 v C 32 33 35 k o ee 35 36 31 32 33 i 34 l Cr l l ane l R i 31 C This aquifer system is laterally discontinuous and has been truncated northward as a result of pre-Pennsylvanian

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n k o o r Public Access Site Dill erosion. It is composed primarily of shale, limestone, and sandstone, and consists of three groups. The three groups a u d o

o T. 1 N. F C st comprising this bedrock aquifer system differ in their percentages of shale, limestone, and sandstone. Most of the T. 1 N. a T. 1 S. E E d water will be found in the limestone and sandstone beds. Yields for domestic wells typically range from 3 to 15 gpm. N oa T. 1 S. k d co R a uz e d ois-C o a b e Du R o r e R l C 2 1 l s 3 5 4 In the outcrop/subcrop area of the Buffalo Wallow, Stephensport, and West Baden Groups the rock is predominantly i i t 3 2 1 6 2 1 6 v 5 5 o 1 4 3 r a 6 5 b l e 4 4 l u shallow and contains numerous, irregular joints. In limited areas some karst has developed in the limestone beds. 3 l 5

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l e These conditions warrant considering the aquifer system as a whole to be somewhat susceptible to contaminants

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introduced at and near land surface.

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B Public Access Site 8 9 10 11 12 11 12 7 Pennsylvanian--Raccoon Creek Group Aquifer System 11 12 7 8 9 10 10 12 7 8 9 10 Dubois 11 County Road 450 N Patoka Lake

Aquifers contained within this Lower Pennsylvanian age bedrock have generally low yielding capability. The outcrop/subcrop of the Raccoon Creek Group covers most of Dubois County. This aquifer system consists, in

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d S 0 a ascending order of the Mansfield, Brazil, and Staunton Formations. Shale and sandstone compose approximately 95 R 0 o

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d 13 16 15 14 16 15 c percent of the group; and clay, coal, and limestone make up nearly all the rest. Shale is more common than sandstone. a 17 15 14 14 13 18 z 13 o 18 17 u C

R 16 15 The sandstone is mostly fine grained.

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C In general, the Raccoon Creek Group Aquifer System is considered a dependable ground-water source in Dubois B B ea D a W Buffalo Pond i County, with many wells producing from the basal sandstone of the Mansfield Formation. Yields for domestic wells ve u l 0 b e r o 22 0 y Managed Area C i typically range from 2 to 10 gpm. Potentially higher yielding wells may be obtained locally for light industrial, 8 r s

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a k 22 23 24 a e Patoka irrigation, farm operation, or small municipal usage of up to 50 gpm. o Ireland 20 21 22 23 24 21 22 23 24 19 d e

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r k u o Water quality is generally good, but in areas of surface and underground coal mining, some localized contamination

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r n may have occurred. Natural water quality gets progressively worse (more salty) in wells ranging in depth from 250 to

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F r e r 450 feet as the strata dip beneath younger rocks to the southwest.

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e 27 L 25 30 29 28 28 26 d 26 28 e 27 27 26 25 30 29 k r 25 e Pennsylvanian--Carbondale Group Aquifer System 26 25 30 re C 29 C Beaver d r ke Creek Lake e o e ro k ad C Ro Jasper rth o C C sw ll o This Middle Pennsylvanian bedrock aquifer system consists in ascending order of the Linton, Petersburg, and the o E u

u S R 164 n n 33 t y t Dugger Formations. Most of the thickness of this group consists of variable shales and sandstones with some coal

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R 35 36 31 32 33 34 35 34 o and limestone. The only part of the Carbondale Group present in Dubois County is the Linton Formation. West of o 31 34 35 36 33 a 34 a Celestine 36 36 31 32 32 d

d 35 9 Dubois County, where more data from well records are available, the Carbondale Group is considered a minor

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E ground-water source with most wells producing from the thicker sandstone and coal units.

W T. 1 S. T. 1 S. T. 2 S. T. 2 S. Gr een Water quality is generally good and the aquifer system is not very susceptible to contamination from the land er Ro ad surface. However, in areas of surface and underground coal mining, some localized contamination may have Pa to 3 2 1 3 2 1 ka 1 6 5 4 6 5 4 occurred. The natural quality of well water gets progressively more mineralized (commonly changing from a 3 2 1 6 5 4 R 3 2 iv er calcium-magnesium-bicarbonate type to a sodium bicarbonate or sodium chloride type) as wells are drilled deeper k

e reek E e Hall C than about 300 feet and the rock strata dip beneath younger rocks to the southwest.

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t d R 12 9 10 11 12 11 n a 9 10 10 12 County Road 150 S 7 8 7 8 y 11 11 12 u 7 10 o t n o R u 8 9 o C

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A e In these areas various coal seams within the Raccoon Creek Group have been removed by underground mining

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o C o methods. Approximately 50 percent of the coal seam has been removed, leaving the potential for storage of substantial ny

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a amounts of water in the larger mines. Although the Division has no records of wells drilled into these mines, yields t

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0 of a few hundred gpm are possible. A limitation on use of the water could be its more mineralized nature. o

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22 23 R 24 23 24 19 o 19 20 21 22 23 24 23 o Duff 20 21 22 21 a 22 20 d a 19 Fromme 24 d County Road 400 S Wildlife Habitat Area

Mentor Birdseye 28 27 26 30 29 25 30 29 28 27 26 25 County Road 450 S 29 28 27 26 30 25 Saint Anthony 27 26 k Hoosier 25 e e r W National C a d 5 l S d l l 4 Forest c e

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R 35 34 31 32 33 34 R 35 r SR 64 36 o o R o a c 32 33 t Bretzville d 34 31 n k 32 33 35 36 i 35 36 31 34 c e C h r Huntingburg M e l e 231 a k Lake n T. 2 S. d T. 2 S. T. 3 S. C Ferdinand

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C County Road 900 S F Holland er di na R. 3 W. R. 2 W. nd Creek R Green oa 64 d SR 2 EXPLANATION 24 19 22 23 24

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0 Small Underground Mine (Abandoned)

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C y e 33 35 y 32 a r o 31 Lakes and Rivers 31 d 34 r 35 36 n 36 Interstate i 36 e 32 33 34 35 34 r

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Map Use and Disclaimer Statement This map was created from several existing shapefiles. Underground Coal Mines in Bedrock Aquifer Systems of Dubois County, Indiana Southwestern Indiana (polygon shapefile, 20001002), Township and Range Lines of We request that the following agency be acknowledged in products derived Indiana (line shapefile, 20020621), Land Survey Lines of Indiana (polygon shapefile, from this map: Indiana Department of Natural Resources, Division of Water. Map Generated By Jennifer K. McMillan by IDNR, Division of Water, Resource Assessment Section 20020621), and County Boundaries of Indiana (polygon shapefile, 20050621) were April 2003 all from the Indiana Geological Survey and based on a 1:24,000 scale, except the This map was compiled by staff of the Indiana Department of Natural Resources, Glenn E. Grove & William C. Herring Bedrock Geology of Southwestern Indiana (polygon shapefile, 20001124), which was Division of Water using data believed to be reasonably accurate. However, a Division of Water, Resource Assessment Section at a 1:500,000 scale. City Areas in Southwestern Indiana (polygon shapefile, 1999) degree of error is inherent in all maps. This product is distributed “as is” without was from ESRI and based on a 1:100,000 scale. Streams27 (line shapefile, 20000420) warranties of any kind, either expressed or implied. This map is intended for use was from the Center for Advanced Applications in GIS at Purdue University. only at the published scale. April 2003