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<br />approximately three feet per year but declined only half this rate <br />I <br />in 1990. These declines are due to a reduction in the recharge <br />i <br />rate to the Third White Sandstone. The GP9 water level for 1991 <br />rose bark to the level seen in 1989 while the 1992 level declined <br />below the 1990 value. <br />Water-level data for the P series wells i= Fresented in Tables <br />A-8 and A-9 of Appendix A. Water levels in alluvial well P1 blue <br />shown .an overall rlecline during 1988 through 1991 from levels in <br />1987 (Figure A-311. Water levels in well P1 were high from 1984 <br />~, through 1987 because the base flew of Pyeatt. Gulch had incre.a <br />=.nd had kept the water levels in the all~.tvium high. The wa <br />levels since September 1987 are lower on the average. due ~to <br />declining flow ir. Pyeat± Gulr_h caused by the r'rought conditions of • <br />recent years. The annual rise in water level in 1992 was much less <br />than observed in the prior three .years. Water levels in the Leis <br />Shale (well P3, Figure A-32), which is in contact with the Pyett <br />alluvium, have varied similar to the alluvial aquifer in this aria. <br />Water levels in the Second White Sandstone .aq~.tifer near well IP5 <br />have bean declining sinr_e early 1986, falling approximately s,ix <br />feet. This indicates that lower recharge rates to the Second Whiite <br />Sandstone have occurred during this period. Water levels in the <br />Third White Sandstone well, PS {Figure 9-:34) have shown shalrp <br />declines since early 1987, dropping six feet from November 198E to <br />N~~vember 1931 and 3ppZO7.1:i1ately twelve .additional feet *._rrough <br />December 1990. Fluctuations in the water level seen ir. 1990 <br />through 1992 are most likely due to seasonal change. Recharge to • <br />2-12 <br />