Stormwater Management: Des Plaines vs Schaumburg

Do I need stormwater approval for a home addition?

Small residential additions are typically below WMO thresholds, but lot grading must still drain away from the foundation and not concentrate flows onto neighbors. Larger projects may trigger detention requirements.

Who regulates stormwater in Des Plaines?

The MWRD Watershed Management Ordinance is the controlling regulation, administered locally by Des Plaines's Department of Public Works/Engineering at (847) 391-5390.

Why does Des Plaines flood so often?

Des Plaines is located along the Des Plaines River and Higgins Creek with significant low-lying areas. The City participates in the NFIP and has invested in flood mitigation, but flooding remains a regional challenge.

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.