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<br />Data from the National Climatic Data Center's Hayden Station is used <br />here to evaluate the precipitation trend. For this year, 19.74 inches <br />of precipitation was measured, which is 2.40 inches (14~) above the <br />1971-2000 average. October, November, January, February, March, April <br />and June were all above average. Snowpack runoff, as estimated by <br />totaling November through March precipitation values, was 7.53 inches, <br />which was 0.35 inches (5$) above the 1971-2000 average. <br />Snowpack runoff, estimated using the Seneca II-W precipitation gage, was <br />6.14 inches (November-March total), which is 0.78 inches (11$) below the <br />Seneca II-W 1990-2004 average, 6.92 inches. These values are more <br />relevant than the Hayden Station data when evaluating the spring runoff <br />observed this year at Seneca II-W. <br />Ground Water <br />• Water Levels. Water levels for all wells that are in the current <br />monitoring program are presented in Appendix C. Hydrographs of all <br />historic data for each well are presented prior to the water level <br />reports (for all data since 2000) for each respective well in the same <br />appendix. By presenting all historic data, trends related to seasonal <br />and annual variability are more clearly evident. Water level <br />measurements are taken with an electrical water level indicator, or in <br />the case of a few shallow alluvial wells, directly from a steel tape. <br />Site information, including sampling frequencies, is presented in Table <br />3, Summary of Ground Water Monitoring Wells. Ground water level <br />monitoring frequencies are listed in Appendix 15-3a of the Seneca II-W <br />PAP. <br /> - Alluvium. The alluvial monitoring Wells WHAL6-1, 6-2, 6- 3, 6-4, and <br /> 7-2 are located along Hubberson Gulch. All wells exhibit water level <br /> seasonal variations typical for the alluvium, i.e. , shallo w after the <br /> spring recharge, deepening towards the fall. Well WHAL10 is located <br />. approximately one-half mile downstream of the NP DES 006 pond on a <br /> tributary to Hubberson Gulch. It also exhibits seasonal variations <br />3 <br />