Arizona v. California is a set of United States Supreme Court cases, all dealing with disputes over water distribution from the Colorado River between the states of Arizona and California. It also covers the amount of water that the State of Nevada receives from the river as well. When a dispute...
https://en.m.wikipedia.org/wiki/Arizona_v._California
Arizona literally created a navy to go stop a dam from being constructed. Their ship got tangled in some cables and Californians had to save them.