The Canals, Laterals and Drains Behind Meridian Subdivisions
The irrigation water running past your back fence, and who runs it.
NAMPA, IDAHO
Water under a Nampa house in summer, or a split line in winter? Freeze, leak or groundwater, one number.
Nampa is Canyon County's largest city and the home of the Nampa & Meridian Irrigation District, which was formed in 1904 to run the Ridenbaugh Canal. That canal and the laterals off it are part of why Nampa, like Meridian, sees crawlspace water rise in summer: the valley's groundwater is fed mostly by canal seepage and irrigation. Nampa's housing spans more than a century, from older homes near downtown with basements and crawlspaces to new subdivisions spreading across the fields. What you see in summer is often a wet crawlspace; in winter, a line that split in a garage or outside wall.
Irrigation season, roughly April into October, is when under-floor calls rise. Winter brings freeze splits. Older homes near downtown add aging pipes and small basements to the list year round.
A call from Nampa to (208) 908-0878 goes to a restoration company that already works this part of the Treasure Valley. Those companies take on restoration and mitigation, ceiling damage, wet walls, floors and carpet, crawlspace and basement water and burst pipes. What the work costs and when it starts get settled after someone has seen the house, between you and that company.
If you're not sure who runs the irrigation water behind your house, the district or your HOA can tell you.
The irrigation water running past your back fence, and who runs it.
Where the valley's groundwater comes from, and why it peaks in summer.