shall implement their statutory authorities in a manner that improves water supply reliability and enables the CVP and SWP to provide the maximum quantity of water supplies practicable to CVP agricultural, municipal, and industrial contractors, water service or repayment contractors, water rights settlement contractors, exchange contractors, refuge contractors, and SWP contractors, in accordance with the Preferred Alternative, NOAA Biological Opinion, and FWS Biological Opinion. 513. Application of State Laws. (a) Reduced water supply If, as a result of the application of applicable State law or regulation, the State of California (including any agency or board of the State of California) alters operation of the SWP in a manner that directly or indirectly results in reduced water supply to the SWP as compared with the water supply available under the Preferred Alternative, and as a result, CVP yield is greater than it otherwise would have been under the Preferred Alternative, then that additional yield shall be made available to the SWP for delivery to SWP Contractors to offset that reduced water supply. If it is necessary to reduce water supplies for any authorized uses of the CVP or CVP Contractors to make available to the SWP that additional yield, such reductions shall be applied proportionately to those authorized uses or CVP contractors that benefit from that increased yield. (b) No restriction of certain water rights The State of California (including any agency or board of the State of California) shall not restrict the exercise of any water right obtained pursuant to State law, including but not limited to a pre-1914 appropriative right or riparian right in order to offset any impact resulting from the implementation of this subtitle on any species affected by operations of the CVP or the SWP. (c) No involuntary water reduction The State of California (including any agency or board of the State of California), the Secretary of the Interior and Secretary of Commerce shall not take any action related to