Stormwater Management: Arlington Heights vs Schaumburg

When is stormwater detention required in Arlington Heights?

Detention is required when a project adds more than 2,500 square feet of new impervious surface area. The detention volume must accommodate a 100-year storm event as calculated per MWRD and Cook County standards.

Can I redirect my downspouts onto my neighbor's property?

No. Downspouts must discharge onto your own property in a manner that does not cause drainage problems for neighbors. Discharging water onto adjacent properties may result in a nuisance complaint and enforcement action.

Does Arlington Heights allow rain gardens for stormwater management?

Yes. The Village encourages green infrastructure including rain gardens, permeable pavers, and bioswales as part of stormwater management plans. These can help meet detention requirements while providing environmental benefits.

Do I need a stormwater plan for my home project in Schaumburg?

Small residential projects like patios and driveways generally do not require a formal stormwater plan unless the total new impervious area exceeds Cook County WMO thresholds. However, you must not alter drainage patterns in ways that flood neighboring properties.

Why does Schaumburg have strict stormwater rules?

Schaumburg is in the Salt Creek watershed, which has a history of significant flooding events. The Village's stormwater regulations help reduce flood risk by controlling runoff from new development and encouraging green infrastructure.

What are best management practices I can use at home?

Rain gardens, rain barrels, permeable pavers, and downspout disconnection all help manage stormwater on residential properties. These practices reduce runoff to Salt Creek and can help prevent localized flooding during heavy rain events.