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<br />o 10 20 30 40 50 <br /> <br />Scole"n""les <br /> <br /> <br />I <br />.~_____,:",,-N__E 8__~ <br />,- <br /> <br />z <br /> <br />N <br /> <br />\ <br /> <br />EXPLANATION <br /> <br />UNCONSOLIDATED ROCKS <br />(contains unconfined and partly confined water) <br /> <br />CONSOLIDATED ROCKS <br />(Principal Rock units consist of granite and <br />Undifferentiated Metamorphic and Volcanic <br />Rocks) <br /> <br />IiiiI <br /> <br />Yields range from 5 to 500 GPM <br /> <br />I11III <br /> <br />Yields greater than 500 GPM <br /> <br />- <br /> <br />Yields commonly range from 0 to 10 GPM; <br />up to 100 GPM in a few places <br /> <br />UNDIFFERENTIATED UNCONSOLIDATED <br />AND CONSOLIDATED ROCKS <br /> <br />CONSOLIDATED ROCKS PRINCIPALLY <br />SANDSTONE <br />(Water generally confined) <br /> <br />D <br /> <br />~ <br /> <br />Yields commonly range ftom 0 to 50 GPM; <br />up to 200 in a few places <br /> <br />Unconsolidated rocks where pr~sent commonly <br />yield 0 to 50 GYM; along streams. yields <br />range from 50 to 1,000 GPM. Consolidated rocks <br />commonly yield only meager amounts of poor quality <br />water; yields up to 50 GPH in a few places. <br /> <br />mill <br /> <br />Yields commo~ly range from 0 to 100 GPH; <br />up to 300 GPM in a few places <br /> <br />NOTE <br />Yields shown here are for a single properly constructed <br />well. Unconsolidated deposits (not shown) along most of <br />the major streams and tributaries generally yield more <br />water than the underlying consolidated rocks. Yields <br />commonly range from 25 - 500 GPM; up to 1,000 GPH in a <br />few places. <br /> <br />~ <br /> <br />Yields greater than 300 GPM <br /> <br />Figure <br /> <br />5 -- Map of the principal sources of ground water in Colorado <br />