Distinguishing Outlet Clogs from Trough Overflow
Understanding where rainwater escapes helps identify what is happening along your roofline. A clogged downspout outlet usually causes water to back up and spill over near the drop outlet or corners, even when the rest of the channel remains relatively empty. In contrast, heavy accumulation spread across the entire gutter run creates localized overflow points during rain, showing that debris is choking the channel before water ever reaches the downspout.