O'Fallon and St. Charles County drainage notes for clay soil, grading, downspouts, French drains, and outlets.https://ofallondrainagepros.com/https://ofallondrainagepros.com/blog/downspout-volume-and-french-drain-outlets/https://ofallondrainagepros.com/blog/downspout-volume-and-french-drain-outlets/A field note on roof-water volume, pop-ups, daylight, and why a French drain without a legal release fails on clay lots.Tue, 22 Sep 2026 00:00:00 GMThttps://ofallondrainagepros.com/blog/ofallon-grading-permit-and-yard-drains/https://ofallondrainagepros.com/blog/ofallon-grading-permit-and-yard-drains/A planning note on O'Fallon grading and land-disturbance review, MS4 context, and how those rules sit beside a backyard drain.Tue, 22 Sep 2026 00:00:00 GMThttps://ofallondrainagepros.com/blog/st-charles-county-clay-soil-drainage/https://ofallondrainagepros.com/blog/st-charles-county-clay-soil-drainage/A field-guide note that connects St. Charles County clay, original subdivision grade, pipe pitch, washed gravel, and a planned outlet.Tue, 22 Sep 2026 00:00:00 GMT