1. Jennifer McCloskey CRWUA December 11, 2014 Challenged but Unbroken: Sustaining the Colorado River

2. Tightening up system operations “The Department is going to continue efforts to improve water management and operations in the Colorado River System, which many of you have referred to as tightening up system operations.” Secretary Jewell, CRWUA 2013 Focus on:  Excess flows  Bypass flows

3. Transit time NV AZ CA Mexico

4. Excess flows Flows arriving at the Northerly International Boundary (NIB) in excess of Mexico’s monthly order. Drivers:  Outages unavailability of Brock or Senator Wash off- stream regulating reservoirs  Water ordered but not diverted, usually due to rain events after releases from Parker Dam  Base flow (in the river between between Imperial Dam and the Northerly International Boundary) greater than scheduled demand  Water released to meet delivery requirements within gauge error (“delivery assurance”)

5. Excess flows * 2014 is provisional data through 11/30 2010 2011 2012 2013 Acre-feet of water 94,830 171,324 71,970 31,204* 2014 77,954

6. Senator Wash Reservoir Brock Reservoir

7. Recent storage history 2010 2011 2012 * 2014 is provisional data through 11/30 2013 141,122 228,059 214,652 221,149 122,749 12,270 122,952 125,796 105,310 91,700 95,353 2014 92,034* 137,024* 229,058* 128,852 Senator Brock Excess Acre-feet of water

8. Recent outage history * 2014 is data through 11/30 2011 2012 2013 2014 0 98 47 10 51 122 7* 10* Outage Days Senator Brock Elevation restricted to 230’

9. Looking forward – 2015 and beyond Memorandum of Understanding for Pilot Drought Response Actions  By Lower Basin States (AZ, CA, NV), CAWCD, MWD, SNWA and Reclamation  Generation of “Protection Volumes”  Target: 740,000 acre-feet of water  Between 2014 and 2017 “Reclamation will work to plan and implement actions to replace, recover and reduce system losses from the Colorado River System.”

10. Bypass Flows

11. Bypass flows * 2014 is provisional data through 11/30 2010 2011 2012 2013 Acre-feet of water 117,464 2014 130,623 126,221 110,923 133,182*

12. Success – past and future Success has been and will continue to be the result of cooperation and partnerships Workgroup will provide the vehicle for new focus on the bypass flows