1)San Diego was build by importing water from hundreds of miles away into what is essentially a desert Enviorment.
climate change will adversely affect San Diego, with more instances of drought and heat, reducing existing water sources.
the main reasons are : many people need water to survive , we must not waste water.
Twenty percent of the San diego county's water supply generally comes from California state water project.
-63% comes from Colorado river.
-17% comes from local sources.
Local water sources, like the accumulation from rainfall, which are held in reservors.
Residential, business and factory users are the biggest users. as these demands grow in the future.
