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(ii) There is sufficient water to support agricultural <br />• activities as evidenced by: <br />(A) The existence of flood irrigation in the area in <br />question or its historical use; <br />{B) The capability of an area to be flood irrigated, <br />based on stream-flow water yield, soils, water quality, topography and <br />regional practices; or <br />(C) Subirrigation on the lands in question, derived <br />from the ground water system of the valley floor. <br />RESPONSE: <br />A field investigation and technical evaluation of all drainages <br />containing streams within and adjacent to the proposed permit area has <br />been conducted in accordance with Rule 2.06.8 (3) and the OSM <br />"Alluvial Valley Floors Guidelines". The investigation consisted of <br />reconnaissance of the general area shown on Map 3, Twentymile Park <br />• Hydrology, and detailed research of the proposed permit and adjacent <br />area shown on Map 5, Fish Creek Tipple Hydrology. The investigation <br />was conducted using the scientific method of reviewing available <br />literature; defining the categories of data collection and the areas <br />to be studied in detail; collecting field data and observations; <br />assimilating data into tables, diagrams and maps; interpreting the <br />data in each category; and drawing final conclusions. In accordance <br />with Rule 2.06.8, this report is divided into three major subheadings: <br />Geomorphic Characteristics; Water Availability Characteristics; and <br />Alluvial Valley Floor Determination. <br />GEOMORPHIC CHARACTERISTICS <br />Mapping of Unconsolidated Deposits <br />The investigation was initiated by mapping unconsolidated deposits in <br />the permit and adjacent area, using geologic maps, aerial photographs <br />and field observations. Geologic information was used from the <br />Geologic Map of Routt County, Colorado Geologic Survey, 1975, by A.E. <br />• <br />2.06-11 <br />