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3 <br />• Several ditches which take their supply from the Canadian <br />River irrigate land east of the river. They tend to be <br />longer, larger and have more irrigated acreage than the <br />ditches west of the river. Table 1 also summarizes the <br />irrigated acreage and maximum height of irrigation for these <br />ditches. <br />Several ditches irrigate land east of the Canadian River but <br />take their supply from tributaries of the Canadian, including <br />Kelly, Willow, Muddy, Cabin, Allen, McKenzie, Coon and <br />Government Creeks. These right bank tributaries have basin <br />areas ranging from 1,200 to 9,410 acres. The creeks all have <br />good sources of supply because the upper reaches extend into <br />the Medicine Bow Mountains where peak elevations reach 12,560 <br />feet. The higher elevations allow much greater accumulations <br />of snowpack than the tributaries on the west side of the <br />• Canadian. Unfortunately, no stream gauge records are known to <br />exist for these tributaries to illustrate their greater <br />yield. Table 2 summarizes the tributary area, upper basin <br />elevation, the ditches served and their irrigated acreages of <br />the right bank tributaries which support irrigation. <br />Irrigated Acreage - Michigan River Basin <br />There are approximately 20,800 irrigated acres supported by <br />the Michigan River, excluding the Illinois River, its major <br />tributary. The identified irrigation systems and their <br />estimated irrigated areas are also shown on LRCWE Plate I, <br />North Park Irrigation Study. The Michigan River supports more <br />irrigated acreage because it has more suitable land and a <br />much greater physical supply. Average monthly runoff is shown <br />on Figure 2, as determined from runoff records available at <br />Walden. An adequate physical supply is available for April <br />. through June, with reduced but usable supplies available in <br />July. <br />Leonard Rice Consulting Waler Engineers. Inc. <br />