Laserfiche WebLink
<br />Introduction <br /> <br />This repor-t is intended to serve two purposes: (l) to <br />make available to the public basic qround-water data useful <br />in planning and studying water-resources development and <br />(2) to supplement an interpretive report that will be pub- <br />J.,i sb,eq later~. <br /> <br />The records were collected during the period 1956-58 as <br />a part of the investigation of the geology and ground-water <br />resources of Yuma County, Colo., made by the u.s. Geological <br />Survey in cooperation with the Colorado Water Conservation <br />Board. The interpretive report by W. G. Weist, Jr., will be <br />published as a Geological Survey Water-supply paper entitled <br />"Geology and ground-water resources of Yuma County, Colo." <br /> <br />The well and test-hole numbers in the tables indicate the <br />locations of wells shown on plate 1. The numbering system is <br />based on the U.s. Bureau of Land Management system of lam sub- <br />division. The number shows the location of the well or test <br />hole by township, range, section, and position within the <br />section. A graphical illustration of this method of well <br />location is shown in figure 1. The first letter indicates the <br />quadrant of the base line and pr~ncipal meridian - B indicates <br />the northwest quadrant, C the southwest quadrant. The first <br />numeral indicates the township, the second indicates the <br />range, and the third indicates the section in which the well <br />is situated. Lowercase letters following the section number <br />locate the well within the section. The first letter denotes <br />the quarter section, the second letter denotes the quarter- <br />quarter section, and the third letter denotes the quarter- <br />quarter-quarter section. The letters are assigned in a counter- <br />clockwise direction, beginning with (a) in the northeast quarter <br />of the section. Letters are assigned to each quarter-quarter <br />section and each quarter-quarter-quarter section in the same <br />manner. If more than one well occurs in a quarter-quarter-quarter <br />section, consecutive n~ers beginning with 1 are added to the <br />letters. For example, B3-45-24cda2 indicates a well in the <br />northeast quarter of the southeast quarter of the southwest <br />quarter of sec. 24, T. 3 N., R. 45 W., and shows that this is <br />the second well inventoried in the quarter-quarter-quarter <br />section. <br /> <br />This report is most useful in predicting conditions likely <br />to be encountered when drilling a new well. The person consider- <br />ing the new well can spot the proposed site on plate 1 and <br />examine the records of nearby wells. From table 2, he can <br />determine what success his neighbors may have had; from tables <br />3 and 4 he may determine the type of materials likely to be <br />encountered; and from table 5 he may determine whether the <br />quality of water is likely to be suitable for its intended use. <br /> <br />The report also is useful when repairing wells, determining <br />the extent of geologic formations, and planning large-scale <br />developments of water supply. These and other uses of the report <br />will be facilitated upon release of the interpretive report. <br /> <br />1 <br /> <br />