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2 <br />• titled "North Park Land Use," which delineates the land use <br />classifications within a 38,400 acre "area of interest." Two <br />of the classifications are irrigated, including hay and <br />pasture. These are the crops normally irrigated in North <br />Park. Outside Map 27's area of interest, the irrigated <br />acreage was not identified with the same degree of accuracy. <br />The acreage represents the probable maximum irrigable area <br />under each ditch, which would be greater than, or equal to, <br />the actual irrigated area. Time constraints did not permit <br />the same degree of identification represented by Map 27. <br />Irrigated Acreage - Canadian River Basin <br />There are an estimated 9,400 irrigated acres within the <br />Canadian River Basin. Most of the acreage lies east of the <br />river, and most of the ditches which serve the irrigated <br />• parcels derive their water directly from the Canadian River <br />or from its right bank tributaries. <br />West of the river, the Bolton Draw Ditch is the only ditch <br />whose source is a tributary of the Canadian River. <br />Discussions with the District 47 Water Commissioner, however, <br />indicate that the ditch operates mainly on irrigation return <br />flow from an area at the head of the draw. That area is <br />irrigated with imported (trans-basin) water from the Michigan <br />River through the Spear Ditch. <br />All of the other known irrigated area west of the Canadian <br />River draws its water from the Canadian. The ditches, <br />irrigated areas and maximum irrigation heights are summarized <br />in Table 1. Figure 1 illustrates the average monthly runoff <br />for the Canadian River, based on historical runoff records <br />available at Cowdrey. Adequate supply is evident in April, <br />• May and June, with much reduced supplies in July and August. <br />Leonard Rice Consulting Water Engineers. Inc. <br />