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- 19 - <br />SURFACE WATER HYDROLOGY <br />The principal streams in the region are the Dolores and San <br />Miguel Rivers, shown on Fig. 8. Both of the rivers are relatively <br />distant from the JD-5 lease. The Dolores and San Miguel are perennial <br />streams with headwaters in the San Juan mountains to the southeast. <br />The JD-5 lease is in the Fast Paradox Creek drainage basin. East <br />Paradox Creek is an ephemeral stream tributary to the Dolores River. <br />The confluence of the creek and the Dolores River is located about <br />9 miles northwest of the lease. Flow records are not available for <br />East Paradox Creek. At the time of our investigation flowing water <br />was not present in the creek channel; however, there were some pools <br />of standing water along the stream bed near its confluence with the <br />Dolores River. <br />The proposed uranium leaching plant will be located near the head <br />of two small ephemeral drainages which are part of a series of small <br />drainages on the southwest Paradox Valley side. Most of these <br />drainages are tributary to East Paradox Creek. The locations of the <br />drainage channels which affect the leaching plant site are shown on <br />Figs. 4 and 8. All of the drainages in the area were dry at the time <br />of our investigation, and judging from the drainage channels, water <br />only occasionally flows in them. Since Gates & Fox have operated the <br />lease starting in 1976, there have been no observed surface flows in <br />the channels near the leaching plant site. Flow has occurred in most <br />Channels in the vicinity as evidenced by erosion of drill access <br />roads. Most of the roads were probably built since the late 1950's. <br />the runoff is probably associated with brief intense thunderstorms., <br />