If you're in the bay area, you've seen a brine mine dozens of times: https://en.wikipedia.org/wiki/San_Francisco_Bay_Salt_Ponds
The thing I'm really curious about is this is happening on a large enough scale does it begin to affect the amount of precipitation that can occur? I'm wondering if it can be utilized to increase rainfall during times of drought
Maybe even long canals to transport the ocean water far inland in very shallow streams that are meant to be evaporated by the sun over time. This uses almost no energy on our part, produces salt, and might possibly help increase rainfall?
Also, inland is usually higher than sea level (where it's lower you get lakes / ponds / swamps, unless it's actively managed), so you would be creating ditches a hundred meters deep if not more.
I'm also not sure that local water would increase rainfall, any amount of wind would sweep moisture off immediately. The most it can do is to increase the humidity of the surrounding area when windless.
Particularly if they will then fill up with salt.