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5.1.4.3 Flood-Irrigated Land <br />Barton Porter, who owns most of the land in and adjacent to this • <br />drainage, has been aggressively improving the production capabili- <br />ties of this area. A system of ditches and pipelines provide water <br />to nearly all arable land in this area for either flood irrigation <br />or sprinklers. <br />Land west of the Porter Ranch along this drainage could be flood <br />irrigated, but the narrow stream valley would inhibit efficient use <br />of this area for any crop production, particularly since Porter <br />controls the stream flow. The fan at the mouth of this drainage <br />could also be flood irrigated, but at present, this land is being <br />used for residential and commercial buildings. <br />5.1.4.4 Land Use <br />Land in this drainage is being used for grazing and hay production. <br />The only structures are those related to the Porter Ranch and a • <br />large residential and commercial development at the creek's mouth. <br />Refer to Section 3.1 for a more detailed discussion. <br />5.1.4.5 Water Yield <br />Average streamflow at the upgradient site over the period of record <br />is 0.31 cubic feet per second (cfs), with a minimum of 0.09 cfs and <br />a maximum of 0.87 cfs. (This data was collected monthly so they do <br />not represent absolute minimum and maximum flow.) Average <br />streamflow at the downgradient site was 0.43 cfs, with a minimum of <br />0.02 cfs and a maximum of 0.81 cfs. Refer to Section 3.3.7.2 for <br />a more detailed discussion of the surface water hydrology of Alkali <br />Creek. <br />Comparison of groundwater level and surface discharge fluctuations <br />indicates the two systems are connected. Hydrographs for OW-2 and <br />Ow-3 (Figures 3.3-9 and 3.3-10) show the same seasonal pattern as • <br />NCEC - Coal Ridqa #1 5-6 ASC/1145/900301 <br />