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Nearby areas within the Illinois River Alluvial pasture and grazing lands, irrigated hay field, (785-36). Tipple operations would not diminish water to the Alluvial Valley Floor. Monitoring and the adjacent irrigation ditch has not iodic water quality. Valley Floor are used for and as wildlife habitat the supply of surface of sediment pond effluent ~ted any adverse change in The tipple is located in a ground water discharge zone; surface flow is diverted away from coal stockpiles; and structures and stockpiles are located above the alluvium on a compacted man-made fill, therefore no effects are anticipated. 3. Surface coal mining and reclamation operations would be conducted to preserve, throughout the mining and reclamation process, the essential hydrologic functions of the alluvial valley floor. The tipple operation would not physically disturb adjacent alluvial valley floors. The supply of surface water supplied to the alluvial valley floor would not be affected by the loadout facilities. Alluvial Valley Floor - Canadian River - Findings The proposed surface coal mining operations would not interrupt, discontinue, or preclude farming on an alluvial valley floor. The permit area is located 1/2 to 1 mile from the alluvial valley floor, and would not affect farming activities. 2. The proposed surface coal mining operations would not materially damage the quantity and quality of water in surface and underground water systems that supply those alluvial valley floors or portions of alluvial valley floors. The Canadian River system receives most of its flow from snowmelt in the Medicine Bow Range to the east of the proposed minesite (p. 779-49). Tributary watersheds that cross the minesite and adjacent areas area at a lower elevation, in an area of low precipitation. Therefore, these watersheds contribute only a minor amount of surface water and alluvial ground water to the Canadian River AVF. 3. Surface coal mining and reclamation operations would be conducted to preserve, throughout the mining and reclamation process, the essential hydrologic functions of the alluvial valley floor. The alluvial valley floor would not be physically disturbed. The applicant's discussion of probably hydrologic effects (p. 780-123 to 780-126jjjjj> has identified several surface water effects caused by the mining operations, However, these effects are for the most part temporary and occur in watersheds that supply only a minor amount of flow to the AVF. These effects would not disturb the essential hydrologic functions of the Canadian River alluvial valley floor.