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--------------- LDER Bright People.Right Solutio- Rain in November 2009 caused the 1-foot probe to read higher moisture concentrations. The l- and 3-foot probes were unaffected until heavy rains from January 2010 through the end of February, which appeared to provide enough pressure to travel through the soil profile. With time, the 3-foot probe showed the most moisture due to water from the top layer moving deeper. As rainfall decreased and temperatures increased in June, soil moisture concentrations began to fall as the soil dried out. Water year 2010/2011 brought higher than average rainfall, as well as more rain events throughout the year. Initially, the moisture curves follow a natural flow path as the 1-foot probe is dryer than the two deeper probes following the summer season. Early rainfall in October 2010 increased soil moisture concentrations in the 1-foot probe, but heavy rainfall in November raised soil moisture concentrations in the 2- and 3-foot probes at a faster rate than in previous years. Soil moistures remained steady throughout the year due to continuous rain events spread out over the season. Soil moisture concentrations at the 3-foot probe remain much higher than the 1 and 2-foot probes at the end of the season compared to previous years due to the extra 72.7 cubic feet of rainfall experienced. Water year 2011/2012 had a slow start, receiving notable rainfall in only three events from October, 2011 to February, 2012. As a result, the soil moisture continued to dry out well into spring, 2012. The 1-foot probe depicts the isolated rain events with spikes in soil moisture, but the 2- and 3-foot probes do not show much change due to the first foot of soil absorbing what little water it had received. Soil moisture at the 2-foot probe began to increase after the March 14 -16 rain event. By late spring, the upper soil zones were saturated enough to allow the April 13 rain event to penetrate to the 3-foot probe zone. The higher average air temperatures throughout the year are illustrated by the rapid decrease in soil moisture at the 1-foot probe after rain events. This is also the first year since the 2008/2009 water year that the 1-foot soil moisture has fallen below 0.400 (Chart 2). 2.7 CURRENT YEAR DISCUSSION Water year 2013 started the season off with significant precipitation. November and December saw near-record single-day rainfall events, but the latter half of the season has received lower rainfall than normal. The 2013 water year has also experienced unusually high temperatures earlier in the season than normal. This has contributed to a rapid drying of the vegetation in late r 47717.11/STO13R0532 Page 7 of 10 August 30, 2013 Copyright 2013 Kleinfelder