Protecting Our Water Quality
A Municipal Separate Storm Sewer System (MS4) is defined as a publicly owned system used solely for conveying storm water; including storm drains, catch basins, curbs, gutters, ditches and man-made channels. The MS4 conveys water directly into surface water, such as rivers and streams.


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Residential Stormwater


City of Defiance Storm Water Management Program
Urbanization within our watershed brings and increase of pavement and rooftops, increasing stormwater runoff which has a negative impact on the water quality of Lake Erie and also causes rivers to...
Clean Up Your Parks Day
Every Spring the City of Defiance invites clubs, organizations, and citizens to pitch-in and get our parks ready for the season. Leaf and litter clean-up beautifies the parks and keeps pollution...
Riverbank Stabilization & Habitat Restoration
The City of Defiance has received a grant from Ohio Lake Erie Commission Funding to assess the riverbank along the Maumee River for riparian restoration efforts, which could include rock reinforcement...
Eastside Park Tree Planting
Photo Above: Green icons show where trees are planned for fall planting at Eastside Park. Species selected for this project include: Ivory Pillar Lilac, Sienna Glen Maple, Frontier Elm, Swamp White...
East High Street Bioretention
While the City of Defiance has worked for many years, at great expense, to separate and replace sewer lines, there are still several combined sewers throughout our community. Combined Sewer Overflows...
Stormwater Management
Why We All Should Care: Each year 24 billion gallons of combined untreated sewage and stormwater are dumped in the Great Lakes. Many combined sewers, where sewage and stormwater are transported...
