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<br /> <br />Alternatives <br /> <br />2-39 <br /> <br />Table 2-5. Summary Impacts of Alternatives <br />Resource A (No Action) <br /> <br />~ <br />C;) <br />.4 <br />Cl) <br />C) <br /><4 <br /> <br />Streamflow <br /> <br />With Development" b <br /> <br />(See Table 2-6) <br /> <br />No change from current practices. It is anticipated <br />that the Aspinall Unit will be operated to provide a <br />more natura' hydrograph, with higher spring flows <br />and lower winter flows. <br /> <br />Irrigation Systems <br /> <br />No change to current irrigation diversion patterns. <br /> <br />River Mechanics (See table 2-6) 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 />Gunnison River habitat may change due to flow <br />changes in the Aspinall Unit, <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 and proposed <br />operation. <br /> <br />Increased potential for fish movement into Uncompahgre River via <br />South Canal. Increased habitat on the Gunnison River pursuant to <br />Instream Flow Incremental Methodology (lFIM) analysis. <br /> <br />AS Lateral Hydropower Project <br /> <br />July 2000 <br />