Stormwater Management

Drainage on Your Property

Property owners often wonder how to best manage drainage, if infrastructure is blocked, or why there’s water in the street or yard swales. The City offers a variety of resources and technical assistance for yard drainage. 

When to Call1312 Heritage Pkwy 2 Dec 2015
Similar to the region, the City’s piped storm infrastructure manages up to a 15 year, 20 minute storm event.  When heavy, intense rainfall amounts exceeded that design standard, it is an expected and planned part of the system for most yard swales and streets to provide overland flow relief to help keep drainage away from home foundations (as shown in the photo). 

If water does not recede within an hour or so after intense rain, or if surface water affects your home or parked vehicle, please call the Customer Service Center to route concerns efficiently to appropriate staff.  

Remember – safety first! Use caution driving through flooded areas. The City can unblock storm drains and subdivision basin outfalls and investigate stormwater issues that may be public problems, such as:

  • Public storm infrastructure maintenance;
  • Standing water (72 hrs or longer) that cannot be resolved with finish grading;
  • Issues causing a potential for loss of life or damage to public infrastructures or buildings;
  • Conflict with emergency access;
  • Potential for high risk stream bank erosion on multiple properties; or
  • Potential for water quality degradation. Learn how to identify and report pollution.

If you have a public concern, please contact the City's Customer Service Center 

Landscapes for Rain
Get inspired on your own property or common grounds!  Check out these local projects make use of important water resources and even help resolve nuisances and maintenance issues.

Public vs. Private Responsibility

Tips for Drainage on Your Property

Standing Water


Detention & Retention Basins

A Note about Buying Property

Make Your Home a Solution to Pollution!



Get notified when this page changes
Top Work Place St. Louis 2019