S" ¸ # ¸ ¸ ¸ # # 9 # Markleville -6 ¸ I§¨¦ # S" n ¸ # y o r n n s i n o ¸ o # t d e l s i i a H d M m a a M H Ingalls ¸ ¸ # Geist # ¸ # Reservoir S" ¸ ¸ ¸ ¸ # # # # ¸ eek # ¸ # r Madison ¸ # l C l Hancock ¸ # a F ¸ Fortville # Hamilton S" Hamilton Hancock Marion Geist Reservoir McCordsville ¸ # ¸ S" # Shirley ¸ # Wilkinson S" S" Hancock ¸ # Henry ¸ # ¸ # ¸ # ¸ # ¨¦§I-70 ¸ # ¸ # ¸ ¸ # # S" k n c Henry o o i Greenfield c r Rush n a a M H S" Cumberland ¸ S" # ¸ # k c h o s c u n R a ¸ ¸ ¸ ¸ # # # H Carthage # ¸ # S" New Palestine " S Big Blue River ¸ # Hancock Shelby y h b l s y n e Morristown u b o l h i R r e S a h M S S" I ¨¦§-7 4 ¸ # Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community Withdrawal Location River Major Lakes ¸ # ¸ # WELL INTAKE 7Q2 Flow (MGD) Interstate ¸ Water Resources # Energy/Mining <10 MGD County ¸ # Industry Irrigation 10 - 50 MGD S" City ¸ and Use in # 50 - 100 MGD ¸ # Misc. Miles 100 - 500 MGD ¸ Hancock County # Public Supply N 0 1 2 Data Sources: U.S. Geological Survey and Indiana Department of Natural Resources Rural Use > 500 MGD Mitchell E. Daniels, Jr., Governor Department of Natural Resources Division of Water Kyle J. Hupfer, Director Aquifer Systems Map 20-B R. 7 E. R. 8 E. R. 6 E. R. 7 E. illage Br E V oo k 5 2 6 3 1 d 11 SR a 8 9 10 o 7 R 12 The occurrence of bedrock aquifers depends on the original composition of the rocks and 2 11 E 10 R S O 3 8 9 a 8 0 t 7 y s 12 t R 11 0 u subsequent changes which influence the hydraulic properties. Post-depositional n n 9 10 0 u 1 o processes, which promote jointing, fracturing, and solution activity of exposed bedrock, d C 9 Fortville a 0 o generally increase the hydraulic conductivity (permeability) of the upper portion of ad 1000 N E nty Ro 1 Cou R 0 bedrock aquifer systems. Because permeability in many places is greatest near the R. 5 E. R. 6 E. y 0 E t R d 1 Nashville n 0 S 1 d u R bedrock surface, bedrock units within the upper 100 feet are commonly the most 5 d o R d 5 d R a r B C d productive aquifers. In Hancock County, rock types exposed at the bedrock surface d s o o e r 15 14 a a 16 a N 17 lf e R k o 18 n 13 as e 14 m include moderately productive limestones and dolomites with small amounts of r A 15 y Geist d R 16 o h t e R 0 N 17 a v r 95 h C oad 18 n County R 13 y i d B r a t l interbedded shales. m 14 u Reservoir o C T l p 15 n e C 16 o C c 18 17 u R C W o d Cree o 13 M ar k 14 C County Road 925 N 0 ug rn 5 S The Silurian and Devonian Carbonates Aquifer System is the only bedrock aquifer County Road 900 N E R n u d 5 E k a system identified for Hancock County. This system is overlain by unconsolidated For P 2 h o Milners M 0 t 1 a e r R r 5 s 1 o 36 h N t e deposits of varying thickness ranging from approximately 50 feet to greater than 300 feet. u 7 y d t Corner an D d a n a The bedrock aquifer system is under confined conditions. In other words, the o 23 u e 21 22 o d 20 e R o 19 24 23 R potentiometric surface (water level) in most wells completed in bedrock rises above the C D 22 y S Creek 20 21 t u ty 24 gar 19 it n n top of the water-bearing zone. Bedrock wells represent only about 5% of all wells 22 23 Eden Rd T ch u u 21 o 20 r o 19 C 24 9 e completed in the county. C e 23 Eden s R h S c E n E E a The yield of a bedrock aquifer depends on its hydraulic characteristics and the nature of 30-01108-IN r D 0 B 5 y 5 r 0 7 D R 234 i 2 S t 9 C! 7 the overlying deposits. Shale and glacial till act as aquitards, restricting recharge to 7 c d k h d d d a e a a underlying bedrock aquifers. However, fracturing and/or jointing may occur in aquitards, o 26 R W 27 o 28 e o 29 30 R y 5 25 McCordsville R r 26 R which can increase recharge to the underlying aquifers. Hydraulic properties of the o 7 27 28 y r t C y 4 29 ty t 30 n 25 T n n d k 26 bedrock aquifers are highly variable. u E 27 u a c u o d 750 N 28 Shirley y Roa o nt o Cou 29 u o 30 0 C Wilkinson 25 C R 5 B C 26 2 y t nty Road 700 N U d Cou n a u t o l D o u R a C y F t Silurian and Devonian Carbonates Aquifer System e k ll n e i u v 35 e o 34 t W 33 r r ounty Road 650 N 31 32 C C 0 36 o 34 35 h C F 0 32 33 c e 5 31 n l 36 a i d 35 34 r m In Hancock County this aquifer system consists primarily of middle Devonian age a 32 33 B ix 36 o 31 S T. 17 N. 35 R carbonates of the Muscatatuck Group and underlying Silurian carbonates. However, y t T. 16 N. n along the eastern edge of the county in a buried pre-glacial valley and a few other isolated u o Willow nty Road 600 N E areas where rocks of the Muscatatuck Group have been removed by erosion the system is ou C C w 0 lo T. 17 N. 0 il Branch composed of only Silurian carbonates. Because individual units of the Silurian and 3 W 3 2 T. 16 N. d 5 4 Devonian systems are composed of similar carbonate rock types and cannot easily be a 2 1 6 4 o 3 5 R distinguished on the basis of water well records, they are considered as a single water- 1 6 2 y 3 t bearing system. Total thickness of the Silurian and Devonian Carbonates Aquifer System 6 5 4 n 00 N 2 1 u County Road 5 30-01045-PS o in Hancock County generally ranges from 100 to 200 feet. C! C E 0 Wells penetrating this system have reported depths ranging from 57 to 390 feet, but are Maxwell 0 E 6 commonly 150 to 250 feet deep. The amount of rock penetrated in the Silurian and 0 d 11 a 5 10 9 o 8 d 12 7 Devonian Carbonate Aquifer System typically ranges from 10 to 60 feet. R a 11 10 o 9 8 y t 12 7 R 11 k n y 10 u 9 F t e Water wells in the Silurian and Devonian Carbonates Aquifer System are generally 8 e o 11 L 12 7 o n r C a r u n t e o capable of meeting the needs of domestic and some high-capacity users. In this county, v C R i d l C l e e nty Road 400 N Cou E most domestic well yields typically range from 10 to 30 gallons per minute (gpm). There n i E E P E 0 Mohawk i 5 0 k w 0 are 2 registered significant water withdrawal facilities (2 wells) with reported yields of 80 5 2 e 7 5 7 5 4 3 dy d County Road 350 N and 100 gpm. However, this aquifer system is less productive along the eastern border d a n d 14 d a 15 o a 16 a a o 17 o 13 18 r R due to thick unconsolidated deposits limiting recharge. In addition, a few dry holes have o 14 B 15 R R R y 16 t 17 y y 18 t been reported just across the county line in Henry County. Static water levels typically y n 13 t t n 14 u n 15 n u 16 o u range from 15 to 40 feet below land surface. A few flowing wells have been reported for 17 u 18 o 13 o 14 C o C C C this bedrock system in the county. Mount Comfort County Road 300 N The quality of water in the Silurian and Devonian Carbonates Aquifer System in §70 ¦¨ 50 N Hancock County is generally acceptable for domestic use. The susceptibility of bedrock County Road 2 21 22 23 W 20 23 24 19 aquifer systems to surface contamination is largely dependent on the type and thickness 0 22 0 20 21 7 19 of the overlying sediments. This aquifer system is not very susceptible to contamination 23 24 d 22 a 20 21 70 due to thick clay deposits over most of the county.