Neighbor lawn and stormwater runoff disputes: What you can do
By My Yard Editorial Team · 7/28/2026
The Quick Answer
Most states follow a 'reasonable use' rule: your neighbor can't concentrate or redirect water onto you in a way that causes damage. Document everything — photos, dates, and rainfall totals are your case.
The Witty Breakdown
Natural sheet flow downhill is legal almost everywhere. A new pipe, swale, or regrade aiming water at your foundation usually isn't.
Ninety percent of these end without lawyers if you lead with photos and a conversation instead of a certified letter.
Step-by-Step Fix
- 1
Photograph and date every storm event, ideally with video of the flow.
- 2
Check whether the change required a permit; call your township if unsure.
- 3
Talk to the neighbor first with the evidence, not the accusation.
- 4
If it continues, file a complaint with code enforcement before pursuing civil action.
Pro-Tip / Do Not Do This
Don't build a berm to bounce the water straight back at them. That's how a drainage complaint becomes a mutual lawsuit.
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