Arizona, California and Nevada are moving forward with a plan to save another 500,000 acre-feet of water in Lake Mead annually until 2026.

We’re talking 500,000 acre-feet over and above the mandatory cuts that are spelled out in the 2019 Drought Contingency Plan (DCP). Each year. For five years. Just to keep the lake from tanking. That’s a significant amount of water. That required a significant bit of negotiation.

The so-called “500-plus plan” is the result of a provision within DCP that required the Lower Basin states to “consult and determine what additional measures will be taken” to keep the lake from falling to a dangerously low elevation of 1,020 feet.