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°~e~~on a-Oy . `1Cz~ <br />2.04.7(2) SURFACE WATER INFORMATION <br />1,0 Description of Surface Water Bodies <br />Santa Clara Creek is the receiving stream for all water discharges from <br />the permit area. It is dry for most of the year and is therefore classified <br />as an ephemeral stream. There is an abandoned diversion structure on Santa <br />Clara Creek about one quarter mile downstream (NE) of the town of Pryor. This <br />location is in the NW~NEC of section 19, T29S, R65W, A diversion ditch on the <br />east end of the concrete section follows a sandstone outcrop to the abandoned <br />farm lands on the south side of Rouse Road at the railroad crossing. Both the <br />diversion structure and the ditch have been completely filled with sediment <br />and are in disrepair, The diversion dam drops the level of the creek <br />approximately twenty feet. The toe of the structure is stabilized by the <br />sandstone channel bottom. Just downstream of the structure, the channel is a <br />stagnant marsh with thick vegetation, There are no other structures or bodies <br />of water on Santa Clara Creek within a mile of the mine area. <br />Pryor Canyon and Black Hawk Canyon are both east-flowing ephemeral <br />tributaries of Santa Clara Creek, Drainage from one proposed mining area in <br />. the southwest corner of the permit area will enter a small tributary of <br />Blackhawk Canyon. Except for bridges at road crossings, there are no <br />structures or ponds in Black Hawk Canyon from approximately four miles <br />upstream of the permit area to the confluence with Santa Clara Creek, <br />Characteristics of Black Hawk Canyon are described in section 2,06,8 (Alluvial <br />Valley Floor Determination) of this report, <br />Pryor Canyon is the major watershed of interest in this study since it <br />contains almost all of the permit area for Pryor Mine, There are no <br />structures on Pryor Canyon upstream of the disturbed area (west of the section <br />line between sections 19 and 24). Downstream of the section line, the main <br />channel of Pryor Canyon has been mined through and reclaimed, (Map 7, Drainage <br />and Sediment Control Plan). An earth stock dam was removed during mining. <br />Approximately 1100 feet of channel were disturbed by mining, A rbad crossing <br />at the eastern edge of the disturbed channel section utilizes two large <br />culverts to pass flows, <br />An unnamed tributary of Pryor Canyon has also been disturbed by <br />mining-related activities, The channel is interrupted by a road crossing. A <br />.,.. <br />~ 133 <br />JFSA-33 <br />J. 6 SAIQ & gSSQCJAiES. INC. <br />