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<br />the Ward Creek and Williams Creek valleys since these areas <br />' may be affected by the mining operations. The study approach <br />and results with respect to flood irrigation and <br />subirrigation are described below. <br />' Flood Irrigation. The basic approach with respect to <br />the identification of existing flood irrigation agricultural <br />' activities was to identify all existing flood irrigation <br />systems in the Ward Creek and Williams Creek drainages based <br />' on field surveys, evaluation of aerial photography, and <br />' discussions with ditch company representatives. <br />The results of this assessment are shown on Map 8 <br />' Irrigation Systems Map. As can be easily discerned from this <br />map, ditch irrigation is very prolific in these two valleys. <br />' More specifically, 11 major irrigation ditches were <br />identified in the Ward Creek valley, and 6 major ditches <br />were identified in the Williams Creek valley. The principal <br />' source of water for these irrigation systems is the Granby <br />Ditch which transports irrigation water from reservoirs on <br />' Grand Mesa. Water from the Granby Ditch is discharged into <br />Ward and Williams Creeks upstream for subsequent diversion <br />' into the various irrigation ditches downstream (as shown on <br />Map 8). Irrigation water from the Granby Ditch is provided <br />by the Granby Ditch and Reservoir Company. (It should be <br />' noted that the ditch system shown on Map 8 represents only <br />the major ditches and numerous laterals exist to transport <br />1 <br /> <br />81 <br />