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the permit azea in REA Canyon. Spring 4 (CJ-LO-SPG #4) is approximately 200 feet <br />west of the permit area in Carbon Junction Canyon. Summaries of the data collected for <br />the 2003 water yeaz for the springs are found in Tables 1 through 3. <br />Spring Flow Rate <br />Flow rates at springs 1, 3, and 4 appeaz to respond to seasonal rechazge, snowpack, and <br />recent precipitation events. In general, spring flow is highest during the spring months of <br />the calendar year, responding to infiltration from snowpack and shallow groundwater <br />rechazge. Spring flow is usually lowest during the autumn and winter of the calendaz year, <br />reflecting drier conditions with less precipitation and recharge to the springs. During <br />years with high snow pack, such as 1994-1995, flow rates were significantly higher than in <br />more normal years (1997-1998) or dry yeazs (1998-1999), Flow rate information was not <br />collected for the 2003 water year at the springs. <br />Spring Temperature <br />Temperatures of spring flow also appeaz seasonally related. During the winter and eazly <br />spring, temperatures aze at their lowest. With the onset of wanner weather, spring <br />temperatures rise through the summer. With the coming of autumn and winter, spring <br />temperatures begin to decrease and reach their lowest level during first calendaz quarter <br />sampling. This phenomenon appears to support the conjecture that these springs are <br />shallow and recharged lazgely by winter snowmelt. Spring temperatures during this water <br />yeaz were within the range of previously recorded temperatures. The temperature for <br />spring 1 was relatively warm compared with the other two springs, though within the <br />range of historic temperatures recorded for springs 3 and 4. The spring temperature for <br />spring 3 was within the historic range recorded during Mazch of this water year. The <br />temperature of spring 4 was the lowest recorded in December 2002 and rose in March <br />2003 to a level within the recorded range. <br />PH <br />pH values of the springs fluctuate seasonally, with values remaining on the slightly basic <br />side. The pH values are not particularly well correlated to season or spring temperahue, <br />though in general, pH values appear correlated to flow, with lower (more neutral) pH <br />values during higher flow conditions. In general, spring 3 has higher flow and lower <br />overall pH values than spring 4. Tn water years 1995 and 1996, pH values fluctuated <br />through the seasons, being lower during high flow and higher during low flow times. <br />During the last three water yeazs, pH values at both springs have shown very slight <br />increases in the alkaline range. The pH at spring 3 peaked during the first quarter of water <br />yeaz 2001, and showed a slight decrease in water year 2002 (from 8.00 to 7.80). This <br />water yeaz the spring 3 pH increased slightly in the Mazch 2003 sampling to 7.94. Spring <br />4 pH peaked in water year 2002 with a pH value of 8.20 during the March sampling. This <br />water year spring 4 pH values declined from 7.93 to 7.51 between December 2002 and <br />Grbon Junction Mlne Pace 4 <br />Mnual Hydralo8lc Reporcfor Water Year PA08 <br />