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• The small disturbed area within the Harvey Gap watershed <br />does have the potential to impact the reservoir outflow <br />which then supplies this AVF with water for flood <br />irrigation. No discharge to Harvey Gap is plannnedq <br />therefore, no impact is predicted. Monitoring of Harvey Gap <br />at reservoir outflow above and below the mine will be <br />sufficient for determining any impacts. Therefore, detailed <br />study of the Colorado River AVF is not necessary to define <br />possible impacts. <br />Alluvial Valley Floor - Ephemeral Drainages. Ehhemeral <br />drainages to Harvey Gap, West Elk Creek, and the Colorado <br />River form along the Grand Hogback and are tributary to the <br />major valleys. No deposits are shown on Figure 16 since any <br />deposits are too small to be mapped. In most cases, no <br />defined channel is established. The areas are too small to <br />be used for irrigation practices. Therefore, none of these <br />drainages are identified as AVF's. <br />• <br />• <br />69 Revised 5/87 <br />