Glossary of Water Policy Terminology
- The section of the Central Valley Project Improvement Act (CVPIA) that states that 800,000 acre-feet
of water should be allocated from the CVP for the restoration of anadromous Central Valley fisheries which
is supposed to be part of the Delta's "base flows" for environmental purposes. Westlands Water District
sued to try to prevent full implementation of this measure. While the environmental groups who defended
the law lost the main issues on B2, the Judge declared that a "PRIMARY PURPOSE" of the CVP is environmental.
- Bay Delta Conservation Plan (BDCP)
- The BDCP is intended to satisfy the requirements of the federal and state Endangered Species Acts while
providing assurances that sufficient water is taken from the Delta for the water agencies (Bureau of
Reclamation and the California Department of Water Resources) and the water districts who have contracts
to buy water from these two agencies (e.g. Tulare Lake Water Storage District, Westlands Water District,
and Metropolitan Water District of Southern California). The conservation part of the planning process
is trying to identify habitat restoration measures for the Delta and the nearby Suisun Marsh to ensure
conservation of the nine fish species that are currently considered at risk, while at the same time
providing for water conveyance through and/or around the Delta for water supply. The plan is being
developed by state and federal agencies with input from water contractor stakeholders, and some environmental
organizations. The BDCP is currently focusing its analysis on the Pipeline/Tunnel Option to divert water from
north of the delta. An administrative draft of the plan may be available for public review in the Spring of 2013. The plan will
then be subject to environmental evaluation. The BCDC has specifically excluded from
consideration the study of reduction of demand for water from the Delta.
- Conjunctive Use
- The combined use of surface and ground water systems to optimize resource use and minimize impacts
of using a single water source.
- Delta Stewardship Council
- The Delta Stewardship Council was created by the legislature in 2009. The seven member council Council
must adopt and implement a comprehensive management plan for the Sacramento-San Joaquin Delta by January 1,
2012. The Delta Plan is intended to guide state and local agencies to achieve the coequal goals of providing
a more reliable water supply for California and protecting, restoring, and enhancing the Delta ecosystem.
A Program EIR is planned for spring 2013
- Total Maximum Daily Load (TMDL)
- TMDLs are action plans to restore the health of seriously polluted water bodies. They define how much
of a pollutant a water body can tolerate and still meet water quality standards. Section 303(d) of the
federal Clean Water Act requires that states identify all water bodies (rivers, streams, bays, creeks,
and coastal areas) that do not meet water quality standards, and the pollutants that impair them. TMDLs
examine water quality problems, identify pollutant sources, and specify actions that will restore clean
water. The California Coastkeeper Alliance has launched a series of
interactive maps identifying
the impaired water bodies of CA for which TMDLs are required.
- Water Use Efficiency
- Reducing water use through water recycling, water reuse, and water conservation. Water Use Efficiency
was one of the program focus areas within CALFED.
- This is the term used to define the distance that salt water stretches from the Golden Gate Bridge
to the point in the Delta where salinity is measured at 2 parts per thousand (ppt). 2 ppt is generally
considered the breaking point between brackish water and fresh water. If the X2 value is high, then there
is more saltwater intrusion into the Delta. If the X2 value is low, then there is more freshwater in the