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<br />Executive Summary <br /> <br />ES-6 <br /> <br />Table ES-l. Summary Impacts of Alternatives <br />Resource A (No Action) <br /> <br />Streamflow <br /> <br />With Developmenta, b <br /> <br />(-;J <br />" <br />! ..6 <br />J, <br />,::-- <br />C.J:) <br /> <br />(See Table ES-2) <br /> <br />No change from current practices. Aspinall Unit <br />operations wiH change to reflect a more natural <br />hydro graph. <br /> <br />Irrigation Systems <br /> <br />No change to current irrigation diversion patterns. <br /> <br />River Mechanics (See table ES-2) Continued erosion of Uncompahgre River banks. <br /> <br />Water temperature No change from current conditions and patterns. <br /> <br />Water Quality No change. <br /> <br />Fisheries <br /> <br />No impacts. <br /> <br />Increased diversions from Gunnison River and discharging into the <br />Uncompahgre River upstream from Selig Canal diversion. <br />Decreased flow in Uncompahgre River between the South Canal <br />outlet and the Project tailrace. <br /> <br />Decreased flow in Gunnison River between Gunnison Tunnel and <br />confluence with Uncompahgre River in Delta. <br /> <br />Irrigation deliveries to Selig, Ironstone, and East Canals from the <br />Gunnison River would be made via the proposed Project. <br /> <br />Ironstone Canal diversion made through M&D Canal would be <br />made at the Ironstone. <br /> <br />Increased erosion of river banks. <br /> <br />Slightly lower temperatures downstream of Tunnel during winter <br />months and slightly higher temperatures during summer months. <br /> <br />Increased turbidity and suspended sediment load during initial <br />years of operation due to channel widening. <br /> <br />Decreased selenium and salt loading to Uncompahgre and <br />Gunnison Rivers due to lining of AB Lateral, proposed operation, <br />and anticipated future improvements to the UVRP. <br /> <br />Increased potential for fish movement into Uncompahgre River via <br />South Canal. Positive and negative flow impacts in the Gunnison <br />River. <br /> <br />:i:" <br />, <br /> <br />" <br />':r <br /> <br />AB Lateral Hydropower Project <br /> <br />July 2000 <br /> <br />'"","." <br /> <br />