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t KLE/NFELOER <br /> Bright People.flight Solutions. <br /> In waterear 2008/20 <br /> y 09, October rain (0.79 inches) caused a slight increase in <br /> moisture at the 1-foot level, with the two deeper probes remaining unaffected. Heavier <br /> rains in December (1.63 inches) caused a rise in the 1- and 2-foot sensors but not the <br /> 3-foot deep sensor. January was a heavy rainfall month with 5.25 inches. That <br /> represented over one-third of the yearly average for the area deposited during a 31 day <br /> period. The moisture content continued to rise through May and then started a drying <br /> period during the summer. There was a data gap in 2008/2009 monitoring, March <br /> through April. The March through April download file was corrupted and could not be <br /> recovered. <br /> 2.7 Current Discussion <br /> Water year 2009/2010 appears to follow a natural flow path as the 1-foot probe is dryer <br /> than the two deeper probes following the summer season. Rainfall in October and <br /> November caused a rise in soil moisture at all depths at the beginning of water year <br /> 2009/2010. Soil moistures peaked in February and have slowly decreased through <br /> June. <br /> Rain in November caused the 1-foot probe to read higher moisture concentrations. The <br /> 2- and 3-foot probes were unaffected until heavy rains from January through the end of <br /> February which appeared to provide enough pressure to travel through the soil profile. <br /> With time, the 3-foot probe shows the most moisture due to water from the top layer <br /> moves deeper. Then, as rainfall decreases and temperatures increase in June, soil <br /> moisture concentrations begin to fall off as the soil dries out. Chart 2 depicts the soil <br /> moisture data vs. precipitation recorded during the 2009/2010 water year. <br /> 47717.11/ST010R310 Page 6 of 8 August 31, 2010 <br /> Copyright 2009 Kleinfelder <br />