UWM Plan - Municipal Water District of Orange County

Appendix A
List of Acronyms:
AF- Acre-feet
IAWP-Interim Agricultural Water Program
M&I- Municipal and Industrial
MET-Metropolitan Water District of Southern California
WSAP-Water Supply Allocation Plan
Definitions:
Extraordinary Increases in Production: Local water production efforts that increase
local supplies, including purchasing water transfers or overproducing groundwater yield.
Groundwater Recovery: The extraction and treatment of groundwater making it usable
for a variety of applications by removing high levels of chemicals and/or salts.
In-lieu deliveries: Metropolitan-supplied water bought to replace water that would
otherwise be pumped from the groundwater basins.
Overproducing groundwater yield: Withdrawal (removal) of groundwater over a period
of time that exceeds the recharge rate of the supply aquifer. Also referred to as overdraft
or mining the aquifer.
Seasonal Shift- Water requested in a period of low demand (winter) for use in high
demand periods (summer). This water will not be available beyond 2009.
Seawater Barrier: The injection of water by OCWD into wells along the coast to protect
the OCWD groundwater basin from seawater intrusion. The injected water acts like a
wall, blocking seawater that would otherwise migrate into groundwater basins as a result
of pumping inland.
MWDOC Water Supply Allocation Plan Page 24