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recharged by stream flow or discharges to stream flow, depending on stream flow level. The alluvial <br /> aquifers probably contribute to stream baseflow during dry periods. <br /> Natural Springs <br /> The permit application contains information on natural springs in Section 2.04.7, Map 2.04.7 M2, and <br /> Table 2.04.7-T7.2. In addition to spoil springs, an inventory of natural springs and seeps within and <br /> adjacent to the PSCM permit boundary sampled 9 springs, 7 of which have adjudicated water rights. <br /> Flows sampled were less than 5 gallons per minute and TDS ranged from 430 to 2920 mg/1 range. <br /> Surface Water <br /> Surface water hydrology information can be found in Section 2.04.5 of the permit application. The <br /> information includes baseline data collected in 2008 and 2009. Of approximately 10,164 acres in the <br /> PSCM permit area, 9,361 acres are in the Grassy Creek drainage basin and 803 acres are in the Fish <br /> Creek drainage basin. Grassy Creek and Fish Creek are perennial streams that are tributaries of the <br /> Yampa River. Grassy Creek has intermittent or ephemeral tributaries in the PSCM permit area that <br /> include Little Grassy Creek, Annand Draw, and Scotchman's Gulch. Fish Creek has an intermittent <br /> tributary in the PSCM permit area, Cow Camp Creek. <br /> Grassy Creek flows into the Yampa River approximately two miles north of the PSCM permit boundary. <br /> Fish Creek flows into Trout Creek approximately six miles east of the PSCM permit boundary. Trout <br /> Creek flows into the Yampa approximately five miles north of the Fish Creek/Trout Creek confluence. <br /> Climate <br /> The climate of the region has the characteristics of a continental highland region: low precipitation, large <br /> fluctuations in diurnal temperatures, low humidity, moderate wind, and high levels of exposure to <br /> sunlight. Annual precipitation is generally between 16 and 19 inches based on records from the Seneca <br /> II-W Mine. <br /> Vegetation <br /> Vegetation in the permit area is predominantly sagebrush grassland, mountain brush, and reclaimed <br /> mine lands. The disturbance area of the PSCM contains reclaimed lands, and previously undisturbed <br /> sagebrush/grassland vegetation. <br /> Land Use <br /> Rangeland (sheep and cattle grazing) is the dominant land use in the permit area and adjacent area. <br /> Other land uses are: cropland (hay fields), wildlife habitat, industrial/commercial (mining, oil wells, <br /> electric transmission lines), developed water resources (reservoirs), recreation (hunting and wildlife <br /> Op CO10 <br /> e <br /> 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 I `�' O <br /> �`1876� <br />