CRFS Technical Meeting LC Operations Update March 30, 2010
24- Month Study Projected Powell WY Unreg Inflow Projected Powell Apr- Jul Unreg Inflow Projected Lake Powell EOWY Elevation w/ 8.23 maf Release Projected Glen Canyon WY Release Projected Amount of EQ Release Projected Lake Mead EOWY Elevation Probability of EQ Jan % 9.3 maf 78% 6.2 maf ft8.23 maf0.00 maf ft21% Feb % 8.9 maf 73% 5.8 maf ft8.23 maf0.00 maf ft25% Mar % 8.3 maf 68% 5.4 maf ft8.23 maf0.00 maf ft3% Summary of Lake Powell and Lake Mead Operations 24-Month Study 2010 Water Year Projections In 2010, the Equalization Elevation is 3642 ft.
What happened January – March? Projected Lake Mead elevation end of WY 2010 increased 4.34 feet in 2 months Storm events in Southern California and Arizona Salt River Project full Alamo Dam releases Painted Rock Dam releases
Water Released from COE Dams March 2010 Provisional data from USGS gages Mar 1, 2010 – Mar 29, 2010
Summary of Lake Mead Elevation and Lake Havasu Water Use in early 2010
End of Calendar Year 2010 LOTS of demand uncertainty –Unused agricultural water from January and February –Capacity constraints of junior priority users –ICS plans for creation and delivery are still in development Side Inflow uncertainty
Lower Basin Side Inflows Glen Canyon to Hoover in WY/CY Month in WY/CY 2010 Total Glen Canyon to Hoover (KAF) Total Glen Canyon to Hoover (% of Average 2 ) Difference From 5-Year Average (KAF) OBSERVEDOBSERVED October %-32 November %-15 December %-6 January %-11 February %-23 PROJECTEDPROJECTED March April May June July August September October November December WY10 Totals86091%-86 CY10 Totals91397%-6 1 Values were computed with the LC’s gain-loss model for the 24-month study 2 Percent of average was based on 5-year mean from
Lower Colorado River Operations For further information: