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TOTAL VOLUME OF RUNOFF WAS CALCULATED USING THE RAINFALL <br /> INTENSITY OF A 10-YEAR , 24-HOUR STORM EVENT PREDICTED FOR <br /> THIS AREA. THE INTENSITY FOR ALL AREAS NEAR AND AROUND <br /> CIRUELA CANYON AND THE MAXWELL MINE IS 3.0 INCHES OF <br /> RAINFALL FOR THE 24-HOUR, EVENT. WEATHER BUREAU TECHNICAL <br /> PAPER NO 40, RAINFALL FREQUENCY ATLAS OF THE UNITED <br /> STATES WAS THE SOURCE OF CLIMATALOGICAL DATAFOR RAINFALL <br /> INTENSITIES FOR THE WESTON. COLORADO, AREA . ITS GUIDELINES <br /> WERE USED IN ESTIMATING STORM INTENSITIES FOR STORM <br /> DURATIONS NOT SPECIFICALLY DETAILED IN THE PUBLICATION. <br /> 10 <br />