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• the flume location placed in the lower canyon. Flows originating free <br />fractured shales and sandstone were measured between 15 and 50 gpm. <br />Quality ranged from 504 to 583 conductivity and 6.5 to 8.7 pH. Current use <br />is livestock and wildlife watering and for aesthetics as the flow creates a <br />stream running through the ranchette development in the canyon. These <br />springs are a valuable contribution to surface flow making Santistevan <br />Canyon a perennial stream. <br />Surface Water Monitoring <br />WFC has been gathering stream flow and water quality baseline data <br />from Santistevan, Apache and Ciruela Canyons since February 1984. This <br />data has been gathered as per the requirements of permit stipulations and <br />is presented in Exhibit 12, Annual Hydrology Report. <br />During the spring of 1984, flume stations were constructed and <br />Stevens Type F continuous recorders were calibrated and placed in operation <br />. on Apache and Santistevan Canyons on April 5 and 20, respectively. These <br />stations were maintained for a period of 14 months until sufficient data <br />was collected to differentiate seasonal flow variations. Also, Ciruela <br />Canyon stream flow has been monitored quarterly at two surface stations, <br />one above the Golden Eagle Mine and one at the confluence with the <br />Purgatoire River below the Golden Eagle Mine. All data collected from the <br />3 canyons is summarized below. <br />Santistevan Canyon. Santistevan Canyon is a perennial stream. <br />Flows ranged from 0.014 to greater than 30.4 cfs with an average 24 hour <br />mean of 0.096 cfs. Exhibit 12, Annual Hydrology Report, presents the daily <br />record at mean 24 hour and peak discharges recorded during the year while <br />the hydrograph summarizes the mean 24 hour variations. Runoff calculations <br />indicate an annual discharge of 148 acre-f t. T'he majority of this runoff <br />was recorded during the summer months in the form of heavy localized <br />thunderstorms. These stones produced extreme spikes in the hydrograph, two <br />of which exceed the recording limits of the flume station. A relatively <br /> <br />2.04-31 <br />