In addition to maintenance of the City’s storm sewer system, the Environmental Services Division applies Best Management Practices to reduce the volume and improve the quality of the water being discharged into the Oakdale's wetlands, ponds, and lakes. 

Oakdale is part of three watershed districts:

• Visit the Ramsey-Washington Metro Watershed District website.
• Visit the South Washington Watershed District website.
• Visit the Valley Branch Watershed District website.