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drainage within and adjacent to the permit azea. These ponds typically catch storm runoff <br />for use until it is lost through seepage and/or evaporation. The ponds do not contain water <br />year round. The stream is considered intermittent because ground water discharge may <br />enter the stream during the snowmelt season (Page II.C-18), and because Red Wash <br />receives contributions from springs at higher elevations north of the permit area. Red <br />Wash drains an azea of 122.5 squaze miles, approximately 6.6 square miles of which is <br />contained within the permit azea. Red Wash enters the White River approximately 1/8 of <br />a mile below the southeast boundary of the permit azea. Map 102 shows the extent of <br />alluvial deposits found along Red Wash within the permit azea, and to a point <br />approximately 1/2 mile upstream from where Red Wash enters the permit area. From this <br />map, it appears the deposits are approximately 500 feet in width. Based on this map, it <br />appeazs no alluvium was found along any of the tributary channels. The permittee did not <br />quantify the amount of land area that the alluvial deposits occupy; however, based on Map <br />102; it appeazs the extent of the deposits exceeds several hundred acres within the <br />immediate vicinity of the permit area. The deposits also appear to extend further upstream <br />beyond the limit mapped by the permittee. Channel incision in the alluvium ranges from 5 <br />to 30 feet. Actual thickness of the alluvium along Red Wash is generally unknown, as <br />only one well, Qal-2, was drilled within the drainage. This well is located at the <br />confluence of Red Wash and the White River. Bedrock was reached at a depth of 21 feet. <br />The information obtained from drilling operations along the White River (inclusive of <br />well Qal-2) indicate that the alluvium is up to 37 feet thick in this azea, with a maximum <br />water table depth of approximately 11.5 feet. Depths to water in the alluvium along Red <br />Wash upstream from the confluence is also unknown, again due to the absence of <br />upstream wells in the alluvium. <br />Based on the extensiveness of unconsolidated alluvium along Red Wash and the probable <br />existence of water with the stream alluvium, the area qualifies for further consideration as <br />a potential alluvial valley floor. <br />Water Availability Criteria -Artificial Flood Irrigation <br />The permittee estimated the potential average annual water yield from the Red Wash <br />drainage basin using Grunsky's Formula (Grunsky 1908, Sellars, 1965; see bibliography in <br />permit application). The estimate indicates that an average of 2,090 acre feet of water <br />could be made available annually in Red Wash. This corresponds to approximately 0.32 <br />inches of runoff, which is about 3.5 percent of the annual precipitation falling on the azea. <br />Actual measurements of flow on Red Wash have been made using a crest stage gage <br />station located at the mouth of the basin. With the crest stage gage approach towazds <br />stream monitoring, only peak flows that occur between monitoring intervals are recorded. <br />Flows that occur at less than the peak flow during any one monitoring interval will not be <br />recorded. The crest gage method is therefore useful for recording peak events only; the <br />method has limited application for determining duration of flow and hence flow volumes <br />which occur during the monitoring interval. <br />The results of the crest gage monitoring efforts on Red Wash indicate that flow is almost <br />4'i <br />