By Colleen Durfee, GOPC Research Intern
Stormwater runoff and Combined Sewer Overflows (CSOs) are primary concerns of Ohio’s industrial legacy cities. In the midwest, we have long depended upon natural water sources for city and metro water needs but severe weather patterns, decades of unsustainable development, aging infrastructure, and fluctuating populations damage natural hydrological systems by allowing human produced bypass and overflow to enter them without being treated. Because of this, many municipalities are faced with needing to upgrade sewer and stormwater infrastructure. Whether mandated by the EPA or adopted independently, stormwater and sewer infrastructure upgrades are extremely expensive. However, municipalities are finding incorporating green infrastructure allows them to cut costs while meeting desired stormwater and CSO capture. Green stormwater and CSO infrastructure often require making more porous surfaces, meaning the land can act as a sponge and absorb the first inch or so of water during a storm rather than flowing on impervious surfaces until reaching a sewer system that overflows into rivers, streams, and lakes. In legacy cities where population and income decline leave abandoned and vacant land in their wake, we find an opportunity to kill two birds with one stone.
Repurposing vacant land for green infrastructure can also revitalize neighborhoods, attract populations, stimulate economic activity, and increase incomes and property values. In cities with brownfields and abandoned property, green infrastructure is a welcome alternative to letting the space remain unusable. Buffalo, NY is addressing the problem of population shrinkage by using abandoned and vacant land to “right-size”, incorporating green infrastructure into its urban core. In Ohio, Youngstown adopted a shrinking city policy as part of their comprehensive land-use plan, allowing them to incorporate porous surfaces and act as a location for wetland creation, fulfilling a need for companies to create wetlands under the wetland banking regulations. Cleveland, St. Louis, Milwaukee, and Cincinnati, are using abandoned lots for green infrastructure like rain gardens and storm basins as part of their overflow control plan.
Repurposing condemned and abandoned properties beautifies neighborhoods, decreases crime, enhances health, reduces urban heat index, and has long-term economic benefits. For municipalities riddled with abandoned properties –remnants of mid-twentieth century hay-day – opportunities to “right-size” while positively affecting stormwater runoff issues should be seized upon. Green infrastructure is not only cost effective but also efficient and adds benefits to the human experience, environment, and health far beyond fiscal viability. In the long term, green infrastructure upgrades will not only provide stormwater runoff and CSO benefits but create resilient and long-lasting communities that house more permanent residents, leading to economic, human, and environmental health.
Tags: Combined sewer overflows