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<br />J-4 <br />--J <br />~ <br />ton <br /> <br /> <br />107' <br /> <br />39' <br /> <br />o <br />I <br />o <br /> <br />25 <br />I <br /> <br />75 <br />, <br /> <br />50 <br />, <br />I <br />7S <br /> <br />100 MilES <br />, <br /> <br />, <br />2S <br /> <br />I <br />50 <br /> <br />, <br />100 KilOMETERS <br /> <br />CJ <br /> <br />EXPLANATION <br /> <br />AREA WHERE THE DEVONIAN AND MISSISSIPPIAN CARBONATE ROCKS <br />HYDROSTRA TIGRAPHIC UNIT IS MISSING BECAUSE OF EROSION OR NON.DEPOSITION <br /> <br />-6000-- POTENTIOMETRIC CONTOUR-ShowI _!Illude a. which walc, lev.1 would hvC' Ilood In IIghlly-used <br />""cU.. Ca.hed whe,. approxlmatelv local cd. Conlour Inle....al 500 'ul U,CCpl In White Rlv., PlaluU" <br />wh.~ Intervalt. 1000 'tel. Nallonal Geodellc Vntklll Valum 0' 1929 <br /> <br />---GROUND.WATER DIVIDE <br /> <br />-.. <br /> <br />APPROXIMATE DDlECTION OF GROUND.WATER FLOW-Flow d'<<cllon m.v nol b. <br />perpendicular 10 potentiometric contourl because 01 vartabl. watrr dcnsUy <br /> <br />. <br /> <br />BOREHOLE WITH MEASURED POTENTIOMETRIC HEAD <br />FLOWING WELL WITH MEASURED POTENTIOMETRIC HEAD <br /> <br />. <br />? <br /> <br />SPRING-Allltud. aboy. Nallonal Gcod.llc VerUeal Dalum 0' 1929 p~lt.d a. approximate <br />potentlomelrlc head. Spring. wuh . discharge 0' 1.000 g~Uon. pn mlnule Of more ar. lab.led <br /> <br />FIGURE 7 <br /> <br />COMPOSITE 1945-1985 POTENTIOMETRIC-SURFACE MAP <br /> <br />FOR LEADVILLE AQUIFER <br /> <br />(Taken trom Geldon 1989 Figure 45) <br />", <br />