Certainly the tens of billions of dollars that they want to spend can be used to find alternative water projects so the fragile Delta is not the main source to put at risk. The fish and wildlife are just one of many so very important and vital aspects of dangers that could cause a catastrophic mistake with no way of recovery.
The special interest water companies are getting the big end the stick. We the taxpayers will pay for the project which could ruin the Delta and then these companies get our water for free charging exorbitant amounts. They just pay for the lines from our canals to Urban systems. This unequal arrangement needs to be revisited at the very least if not scrapped altogether. Each involved municipality can go to community owned water districts who will care about impacting their communities and not making profit the priority.