A district built on a Floodplains tile to improve the comfort of living along a River. +1 Food and +1 Production for adjacent Improvements. Prevents damage from flooding (though yields from flooding drop by 50%). Prevents Food loss during Drought. Only one may be built along each river's floodplain (whichever player completes one first) and the river must traverse at least two sides of the Dam hex. Military Engineers can spend a charge to complete 30% of a Dam's production.