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FIELD EXAMINATION REPORT
<br />OINEIL DRAW WATERSHED
<br />Sedgwick County, Colorado and Deuel County, Nebraska.
<br />Julesburg, Colorado
<br />August 6 and 7., 1958
<br />PERSONNEL PARTICIPATING
<br />Dwight S. McVicker, Head E and tA?P Unit, SCS, Lincoln, Nebraska
<br />G. E. McCr1mmon, Assistant State Conservationist, Denver, Colorado
<br />K. L. Carson, Watershed Planning Party Leader, SCS, Denver, Colorado
<br />J. R. Batie, Watershed Planning Party Leader,, SCS, Lincoln, Nebraska
<br />R. E. Maclay, Hydrologist, SCS,, Lincoln, Nebraska
<br />J. J. Styskal, Area Conservationist, SCS, Scottsbluff, Nebraska
<br />J. H. Rice, Work Unit Conservationist, SCS, Chappell, Nebraska
<br />Wallace Bruce, Area Conservationist, SCS., Sterling., Colorado
<br />Robert Moreland,, Work Unit Conservationist., SCS., Julesburg., Colorado
<br />SUMMARY
<br />The principal objective of the sponsors is to provide protection from
<br />the floodwater runoff of the OtNeil Draw to the irrigation systems.,
<br />irrigated lands, the City of Julesburg, the County and State highways., and
<br />the Union Pacific Railroad roadbed.
<br />Damages caused by floodwater and floodplain scour are severe on
<br />2,500 acres of highly productive irrigated land and the major portion of
<br />the City of Julesburg. This is directly related to the runoff from 26
<br />square miles of dry crop and pasture lands. in addition., the crop yields
<br />on six square miles of irrigated lands outside the presently delineated
<br />boundary are reduced due to i;zterruption of water delivery service from the
<br />Peterson and State Lire Canals.
<br />There is a definite need for structural measures particularly flood-
<br />water- retarding structures., floodwater disposal channels and possibly
<br />some grade stabilization structures. The major obstacle to a feasible
<br />watershed program appears to be that of obtaining an adequate disposal
<br />channel through the irrigated and urban areas to the South Platte River.
<br />Physical conditions., possible site locations, magnitude of the damages.,
<br />and the local interest appear to warrant further study to determine the
<br />amount and feasibility of structural measures and land treatment practices
<br />required for flood prevention. Structures that seem to be needed to meet
<br />the program objectives appear to have favorable economic justification.
<br />Approximately 50 per cent of the upland area is under conservation farm
<br />plans with the Deuel County Soil Conservation District, Approximately 30
<br />per cent of the planned land treatment measures have been applied. It is
<br />believed that the necessary land treatment measures can be applied with
<br />an accelerated land treatment program within the project installation period.
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