It is a safe bet that many seeps and springs that haven’t dried up, are being dammed and diverted to the dope growers plots. Many of the fires are started by cook fires that got away from the dope grower, many times they are illegals camping out there and tending the crop. Just starting the fires and growing the dope Americans refuse to do.
No, in those counties the dope growers grow for co-ops.
They grow in their backyard and barnyard and use the water hose to water.
In Sonoma County you can call the Sheriff out to tag up to 99 plants if you're willing to pay the tax.
It's possible to produce 30 pounds of clean bud per plant on the North Coast.
These guys produced 618 pounds off the Mendocino County limit of 25 plants:
https://www.youtube.com/watch?v=lkgmrQicXKw