In the last 1200 years. What about before then? Something I recall seeing somewhere there was an ocean in the west long ago too. Climate changes, always.
1200 years of rainfall data! Just goes to show you rain gauges last over 1200 years. Dont throw your rain gauges in the trash Recycle them, if your local landfill or community doesn’t have a special “ rain gauge “ recycle bin, write your local sanitation dept and demand one!! /S for those with no sense of humor.