Laserfiche WebLink
flows through and into the unconsolidated deposits, <br />topography showing local and regional terrace levels, and <br />topography of terraces, flood plains and channels showing <br />surface drainage patterns. <br />(ii) Mapping of all lands that are currently <br />or were historically flood irrigated, showing the location <br />of each diversion structure, ditch, dam and related <br />reservior, irrigated land, and topography of those lands. <br />(iii) Mapping of all lands included in the area <br />in accordance with 2.06.8(3) and subject to agricultural <br />activities, showing the area in which different types of <br />agricultural lands, such as flood irrigated lands, pasture ' <br />lands and undeveloped rangelands exist, and accompanied <br />by measurements of vegetation in terms of productivity and <br />type. <br />(iv) Documentation that areas identified in <br />2.06.8(3) are, or are not, subirrigated, based on ground <br />water monitoring data, representative water quality, soil <br />moisture measurements, and measurements of rooting depth, <br />soil mottling, and water requirements of vegetation. <br />(v) Documentation, based on representative <br />sampling that areas identified under 2.06.8(3) are, or <br />• are not, flood irrigable, based on stream-flow, water <br />quality, water yield, soils measurements, and topographic <br />characteristics. <br />(vi) Analysis of a series of aerial photographs, <br />including color infrared imaoery flown at a time of year to <br />show any late summer and fall differences between upland <br />and valley floor vegetative growth and of a scale adequate <br />for reconnaissance identification of areas that may be <br />alluvial valley floors. <br />(c) Based on the investigations conducted under <br />2.06.8(3)(b), the Division shall make a determination of the <br />presence or absence of alluvial valley floors, the extent <br />of any alluvial valley floors within the study area and <br />whether any stream in the study area may be excluded <br />from further consideration as lying within an alluvial valley <br />floor. The Division shall determine that an alluvial valley <br />floor exists if it finds that: <br />(i) Unconsolidated streamlaid deposits holding <br />streams are present; and <br />(ii) There is sufficient water to support <br />agricultural activities as evidenced by: <br />• (A) The existence of flood irrigation in <br />the area in question or its historical use; <br />