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<br />PUBLI C HEALTH SERVI CE <br /> <br />Populations of the counties and communi ties are shown in Table 1. <br /> <br />County and <br /> <br />;, <br />. ,j <br /> <br />Location <br />Montezuma County, Colo. <br />Arriola <br />Cortez (town) <br />(urban) <br />Dolores <br />Lakeview <br />Lewis <br />Pleasant View <br />Stoner <br />Sylvan <br />Dolores County, Colorado <br />Cahone <br />Dove Creek <br />Rico <br />San Juan County, Utah <br />Cedar Point <br />Ucola <br /> <br />- <br /> <br />Table 1 <br />Communi ty <br />1 30 <br />7,79 ., <br />.J <br />921 1,778 <br />557 804 <br />218 393 <br />339 488 <br />164 149 <br />1,412 1,958 <br />214 415 <br />573 418 <br />447 388 <br />3,496 4,712 <br />59 173 <br />114 224 <br /> <br />11 <br />1950 <br />9,991 <br />561 <br />2,680 <br />1,604 <br />729 <br />418 <br />512 <br />445 <br />23 <br />147 140 <br />1,966 2,196 <br />394 400 21 <br />702 986 - <br />212 353 <br />5,315 9,040 <br />70 70 21 <br />379 400 [I <br /> <br />Rand McNally World <br /> <br /> <br />11 Figures from U. S. Bureau of Census and <br />Atlas. <br />Y Estimated. <br /> <br />Water Supply Problems <br /> <br />1 60 <br />11,02 <br />550 21 <br />6,764 - <br /> <br />805 <br />425 21 <br />450 [I <br />527 <br /> <br /> <br />Like most of the western streams, the discharge of the Dolores <br />River fluctuates ;Tidely from season to season and year to year. The <br />basic plan of development provides for storage of surplus runoff occur- <br />ring from snow melting during the spring and early summer months so that <br />it may be used during periods of low flow. The 30-year period, 1928 <br />through 1957, which contains several critically low runoff periods, <br />has been taken by the Bureau of Reclamation as a conservative basis for <br />estimating future water supply for the project. <br /> <br />Streamflows <br /> <br />". <br />~. '. . <br /> <br />.' .c' <br /> <br />The State of Colorado and the U. S. Geological Survey have main- <br />tained stream gaging stations at a number of sites on the Dolores River <br />and tributaries both above and below the McPhee Dam site. Table 2 <br />shows the period of record, maximum, minimum, and average flows at <br />selected gaging stations. <br /> <br />119 <br />