Ravalli County, Montana Daly ditches irrigation districtThe Daly Ditches Irrigation District (DDID) is a Public Corporation, proudly serving western Montana since 1982. landowner resources Contact Us We have moved to our new location at 1023 Old Corvallis Road, Corvallis, Montana 59828. 41 Years Of Top-Tier ServicePlace a water order 11Main ditches 83Miles of managed irrigation canals 2,100Water users 14,841Acres managed Skalkaho Siphon #14 Renovation We’re Hiring! Our Values Responsibility Integrity Accountability Honesty