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Sage Creek Sage Creek is a perennial stream to the west of the proposed permit azea. Flows upstream from the proposed permit area range from an average 0.7 cubic feet per second (cfs) in the spring to neaz 0 in late summer and fall. Approximately two miles downstream from the permit azea, average flows of 1.5, 0.09, and 0.04 cfs were observed during baseline data collection in the spring, summer, and fall respectively. Water quality in Sage Creek varies from upstream to downstream. Upstream from the permit azea, a CaMgH0003 water type predominates. Total dissolved solids (TDS) typically range from 296 to 510 mg/1 at high and low flows, respectively. Downstream from the permit area, a CaMgSO4HC03 water type predominates, and TDS typically ranges from 526 to 695 mg/l at high and low flows, respectively. Most of the flow in Sage Creek is diverted out of the stream for irrigation purposes prior to reaching the site where downstream baseline data was collected. Sage Creek water is also used for livestock watering. Grassy Creek Grassy Creek is a pereenial stream to the east of the permit azea. Flow in Grassy Creek upstream from the permit area was perennial during baseline data collection. Mean flow rates in the spring, summer and fall were 0.91, 0.10, and 0.06 cfs respectively. A CaMgSO4HC03 water type predominates upstream from the permit area. TDS ranges from 680 to 853 mg/1 at high and low flows, respectively. Permit Area Intermittent flows from the northern side of the permit azea drain through Armand Draw into Scotchmans Gulch, and then into Grassy Creek. Spring flows in Armand Draw are predominately from the melting of snowpack. Late spring to early sttmmer flows aze a combination of bank storage, runoff from precipitation events over satwated or frozen ground, or perched spring flow recharged by snowmelt. The remainder of the year, the channel exhibits ephemeral flow chazacteristics. The mean flow rate in the spring is .056 cfs, and .02 cfs in the summer. Within the permit azea, there are five primary drainages, four of which are ephemeral. The drainage channels have been identified as Armand Draw, 011 Draw, Yl Draw, Y2 Draw, and Y3 Draw. Armand Draw is intermittent. The drainage patterns exhibited in these draws aze a combination of parallel and dendritic. The drainage densities are moderate (7.26 to 10.38 mi/mi2), channel sinuosities are low (1.01 to 1.07 mi/mi), and channel gradients aze moderate to steep (.039 to .218 ft/ft). Yoast Mine 1 1 August 3, 2005