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• than in more normal years (1997-1998) or dry years (1998-1999). No significant changes <br />in spring flow were observed during water year 2000. <br />Temperatures of spring flow appeaz seasonally related. During the winter and early <br />spring, temperatures are lower. With the onset of warmer weather, spring temperatures <br />rise. With the coming of autumn and winter, spring temperatures begin to decrease and <br />reach their lowest level during fast calendaz quarter sampling. This phenomenon appears <br />to support the conjecture that these springs aze shallow and rechazged largely by winter <br />snowmelt. Spring temperatures during this water yeaz were consistent with those of prior <br />years and within the temperature range observed during prior water years. <br />pH values of the springs fluctuate seasonally, with values remaining on the slightly basic <br />side. Values fluctuated between 7.2 and 7.85 standard pH units from water yeaz 1995 to <br />water yeaz 2000. The pH values aze not particularly well correlated to flow rate or spring <br />temperature. In water years 1995 and 1996, pH values fluctuated through the seasons, <br />being lower during high flow and higher during low flow times. During the last two water <br />years, pH values at both springs have shown very slight increases in the alkaline range. <br />Whether this is a significant trend is unknown <br />Electrical conductivity (EC) is directly related to the concentration of ions in the water. <br />As would be expected, the springs overall show decreased electrical conductivity readings <br />during the high flow conditions of late winter and eazly spring and increased values with <br />. decreased flow. EC values during the 2000 water year were very consistent with those <br />from the two prior water years. <br />Total dissolved solids (TDS) concentrations remained consistent in spring discharges <br />during this water year when compared to reading from prior water years. Overall, <br />concentrations were lower during high flow and higher during ]ow flow conditions. Total <br />suspended solids (TSS) concentrations remained low in both Springs 3 and 4 this water <br />yeaz, <br />During the 2000 water year alkalinity, calcium, manganese, sodium, sodium adsorption <br />ratio, and sulfate revealed concentrations that remained within the observed historic <br />ranges for Springs 3 and 4 and showed no notable changes from prior water years. The <br />remaining constituents sampled; bicazbonate, chloride, and magnesium revealed slight <br />overall decreases in constituent concentrations in one or both springs from prior water <br />years. Bicarbonate concentrations have shown slight decreases in both springs over the <br />past two water years. Chloride concentrations at Spring 4 also decreased this water year <br />from an average of near 45 mg/I to 30 mg/l this yeaz. Chloride values in Spring 3 <br />remained within the recorded range. Magnesium concentrations at Spring 4 likewise <br />decreased from levels near 170 mg/1 to 120 mg/l this water year. Whether these lower <br />values represent a trend is not known at this time. <br />• <br />-4- <br />