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Stormwater Management

Polluted runoff (commonly called stormwater runoff ) carries pollution and trash as it flows into our streams, lakes, ponds and rivers, making them unhealthy.

Stormwater Management is the process where we slow, soak in, or store stormwater to help reduce the amount of pollution entering our waterways.  Montgomery County uses above and below ground structures (we call them stormwater management facilities) to remove pollutants from the stormwater before the water gets to streams.  


Where are Stormwater Management Facilities?

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(Please click on the arrows in the top left corner to view legend)


Stormwater Facility Maintenance Fact Sheets

Download our maintenance guides

  • Rain Garden Guide

    Downlod the How to Maintain Your Rain Garden, Bioswale and Micro-bioretention Practice guide
  • Vegetated Facilities Guide

    Download the Caring For Your Vegetated Stormwater Facilities Guide
  • Dry Well Guide

    Download the How to Maintain Your Buried Dry Well guide
  • Grass Swale Guide

    Download the How to Maintain Your Grass Drainage Swale guide
  • Porous Pavement Guide

    Download the How to Maintain Your Porous Pavement guide
  • Green Roof Guide

    Download the How to Maintain Your Green Roof Guide
  • Infiltration Area Guide

    Download the How to Maintain Infiltration Areas guide
  • Rain Barrel Guide

    Download the How to Maintain Your Rain Barrel guide

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