OHIO STORMWATER ASSOCIATION
The Ohio Stormwater Association (OSWA) is a group of public and private citizens dedicated to advancing the management of stormwater and related natural resources through education, leadership, watershed-based coordination and technical assistance in Ohio.
The Ohio Stormwater Association provides educational and networking opportunities for people focused on reducing the negative impacts of stormwater runoff. The OSWA provides educational meetings on topics of interest to our members and sponsors the Ohio Stormwater Conference held each spring.
Read More ➜OSWA PARTNERS WITH McMAHON DeGULIS LLP

The Ohio Stormwater Association (OSWA) is excited to announce a new collaboration with McMahon DeGulis LLP to provide regulatory support and information related to stormwater environmental regulations in Ohio.
Chamber USA stated that McMahon DeGulis is a “highly regarded boutique with expertise covering the full range of environmental law. [McMahon DeGulis] possesses particular strength in wastewater and brownfield matters, as well as integrated planning work related to the CWA.”
OSWA is excited to embark on this partnership with such a highly regarded Ohio environmental law firm, and we look forward to the benefit and insight that this will bring to our membership.
Visit their website to learn more about McMahon DeGulis.
TOPGOLF STATEWIDE NETWORKING EVENT – CINCINNATI, COLUMBUS, & CLEVELAND
OSWA is excited to host a statewide networking event taking place at the Cincinnati, Columbus, and Cleveland Ohio Topgolf locations on October 5, 2023! There will be prizes for the Top Ohio Individual and the Top Ohio Team! Visit our Topgolf Networking Event page for information regarding tickets, the event schedule, and more.
2024 OHIO STORMWATER CONFERENCE – KALAHARI CONFERENCE CENTER, SANDUSKY, OHIO
The 2024 Stormwater Conference will be held in May at Kalahari Resort and Conference Center located in Sandusky, Ohio.
The Premier Event in Ohio and one of the Largest Stormwater Conferences in the Country
The conference has grown from 399 attendees to over 970 in the past 14 years. The Ohio Stormwater Conference is an annual conference dedicated to advance the knowledge and understanding of comprehensive stormwater management for those dealing in all aspects of planning, design, implementation, and regulatory compliance. The 2023 Stormwater Conference will be held May 10-12 at Kalahari Resort and Conference Center located in Sandusky, Ohio.
The Ohio Stormwater Association and Tinker’s Creek Watershed Partners are looking forward to another great program with experts in the stormwater field sharing their knowledge, and experience. More information coming soon – visit the conference website for updates.
2023 OHIO STORMWATER ASSOCIATION AWARD RECIPIENTS
Thanks to all who submitted nominations for the 2023 Ohio Stormwater Association Awards! Visit our OSWA Award Recipients page for the list of award winners.
OSWA MEMBER BENEFITS
The Ohio Stormwater Association (OSWA) is excited to announce affiliations with the organizations listed on our Become a Member page to provide discounts to OSWA members.
Visit our Become a Member page to learn more about the new OSWA member benefits.