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Lortrtam Canyart Mirte -Surface Water Technical ReOari <br />• <br />Storm flows at the site were monitored using crest gauges. Details of crest gauge construction are <br />included in the methodologies section of this report. These gages were monitored monthly at the <br />surface stations. Crest gauge data was interpolated to flow data utilizing the stream rating curves <br />detailed in the methodologies section. Generally, the highest flows were detected in August or <br />September. Storm events were not seen in these gauges.in the months of January through June. <br />The highest flow determined from these gauges was 240 cfs at the Little Pine Canyon Station. All <br />flows are summarized on the data sheets in Appendix SW-3. <br />u <br />• <br />Springs were also monitored monthly for flow. Spring flow ranged from 0.1 to 12.25 gpm during <br />the baseline monitoring period (Table SW-6). The springs SPBC-1, SPBC-2, SPBC-3, SPBC-5, <br />and SPCC-1 are perennial springs. The other springs exhibited months with less than 0.10 g.p.m. <br />flow and are considered intermittent. <br />N/A- Not applicable <br />TABLE SW-6 <br />LORENCITO CANYON MINE <br />SPRING SITES BASELINE FLOW DAT (cfs) <br />Monitoring Site 'n', number of <br />sam lin events Minimum aximttm Mean <br />Alamosa Canyon <br />SPAC-I 8 0.1 12.25 5.9 <br />Boni[a Canyon <br />SPBC-l 10 0.5 4.5 1.45 <br />SPBC-2 10 0.5 3.5 1.16 <br />SPBC-3 10 0.5 2 1.09 <br />SPBC-4 f0 0 0.75 0.271 <br />SPBC-5 8 0.25 1.9 0.84 <br />Chimney Canyon <br />SPCC-l 10 0.2 I.5 0.63 <br />Cow Canyon <br />SPCWC-l 8 0 Seep N/A <br />Coyote Canyon <br />SPCYC-1 l0 0.1 0.75 0.26 <br />Little Jeff Canyon <br />SPLJC-1 B 0.1 0.5 0.37 <br />Little Pine Canyon <br />SPPC-l 10 0 Seep N/A <br />sw.175\December d. 1996 15 <br />