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1 <br />' <br />' <br />� <br />' <br />�I� <br />' <br />� <br />� <br />C <br />' <br />' <br />' <br />' <br />' <br />II <br />� <br />1 <br />cross section seems to demonstrate that there is substantial discontinuity in geologic structures <br />that form the aquifers and it is difficult to accurately map these structures. <br />Ground water level hydrographs from each of the wells have been prepared. Time periods when <br />recharge water was available have been superimposed allowing the reader to observe ground <br />water reaction to recharge. These hydrographs are included as Figures 3-2 and 3-3. As shown in <br />the graphs of water levels in the monitoring wells that were completed at different depths, there <br />is a downward ground water gradient in the vicinity of both well nests. This information <br />conforms with the descriptions of ground water conditions or modes along the edges of the <br />valley as prepared in earlier reports (Hearne, 1988 p. 7& 8). Diagrams of four common modes <br />that occur within the ground water aquifers in the valley are included in Figure 3-4. <br />Earlier reports (Hearne, 1988 p. 7) indicate that "perched or semiperched conditions occur .... <br />around the perimeter of the ..... basin and indicate that water is flowing from shallow to deeper <br />aquifers of the system." The increased water levels that occur within a few days after flow <br />through the irrigation canals and diversion to the ponds on this site clearly indicate that surface <br />water carried from the Rio Grande is recharging the aquifer penetrated by the monitoring wells. <br />Furthermore, the ground water slope or gradient to the east as shown by comparing water levels <br />in the well nests at similar depths and times, indicate that ground water flow is easterly at this <br />site. <br />3.1.2 Brownell Recharge Site <br />Three monitoring wells were drilled near the Brownell recharge site to observe ground water <br />response to surface water diversions into the recharge pit. All wells were drilled to a depth of 20 <br />feet below the ground surface. Well logs and permits axe included in Appendix C. Water level <br />measurements in the sprinkler pivot wells were also made. Ground water level hydrographs <br />from each of the wells have been prepared with time periods when recharge water was available <br />superimposed to allow the reader to observe ground water reaction to recharge. These <br />hydrographs are included as Figures 3-5, 3-6, 3-7 and 3-8. <br />3-2 <br />1 <br />