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I-12 <br /> <br />Maximum irrigation height above the source of water supply is <br />another index which must be addressed. Most of the irrigation <br />schemes in the area do not have irrigation heights above 40 <br />feet. The Bona Fide Ditch takes water from the Canadian River <br />and irrigates land which is a maximum of 70 feet above its <br />source. The irrigated land is located in three unnamed draws <br />southeast of the Bourg Mine area. The Bona Fide Ditch water <br />is imported from the Canadian River and into the three draws. <br />Flood Irrigation Potential <br />In summary, all of the apparently successful irrigation <br />schemes studied derive their water from the mainstem Canadian <br />and Michigan Rivers, which are both perennial in nature, or <br />from tributaries which have good physical supplies, which are <br />probably perennial in nature, or from sources derived from or <br />supplemented by imported water. All of these projects have <br />more dependable sources of supply than Mann Draw, which is an <br />ephemeral stream at best. It is believed that Mann Draw does <br />not have the natural characteristics to support a successful <br />irrigation scheme and that successful (economical) irrigation <br />could be achieved, if at all, only through the importation of <br />more reliable water. It is also believed that negative <br />engineering, economic and regional practice evaluations have <br />discouraged potential irrigators from venturing into Mann <br />Draw. <br />Historical Flood Irrigation <br />No evidence of historical irrigation was found on Mann Draw <br />and none is believed to have existed. <br /> <br />Leonard Rice Consulting Water Engineers Inc. <br />