The Philadelphia region's suburbs are facing an unprecedented challenge as extreme weather events become more frequent and intense due to climate change. The intensifying summers are putting the aging infrastructure to the test, and the consequences are devastating for residents and local governments alike.
One resident, Tori Bauver, experienced the full force of a microburst storm in July, which destroyed her home and belongings. This is not an isolated incident; such storms are becoming a regular occurrence, with the average July temperature in Philadelphia rising by 4.4 degrees since 1940. The implications of these hotter summers are far-reaching, with more precipitation and intense rain events leading to flash floods and waterlogged roadways.
The Impact of Intense Storms
The impacts of these intense storms are varied and widespread. High winds and saturated soil cause trees to fall, damaging property and disrupting power lines. The loss of power during hot summers can be particularly dangerous for residents. As Ray Courtney, a Lower Merion commissioner, puts it, "These unlikely, freak events are really the ones that break us."
Flooding: A Common Hazard
Flooding is identified as the most significant and pervasive issue facing municipal leaders. Intense precipitation and flash floods disrupt daily life, impacting transit and endangering residents. The topography of Philadelphia's suburbs exacerbates the problem, making it difficult to find effective solutions.
Aging Stormwater Systems
A key tool in managing extreme weather is stormwater systems, which collect and move rainwater and snowmelt away from developed areas. However, many municipalities are dealing with aging stormwater systems that require costly repairs. The challenge is further compounded by the fact that many suburban communities were built before a 1978 state law requiring stormwater management planning.
Community Vulnerability
Some communities are more vulnerable to climate impacts than others. A 2021 climate change vulnerability analysis by Montgomery County found that denser, water-proximate communities like Norristown and Pottstown are at higher risk. On the other hand, greener, more rural areas like New Hanover and Marlborough Townships present lower risks.
Mitigating Climate Impacts
Experts suggest a range of interventions, from constructing rain gardens to rewriting zoning ordinances. Maintaining a healthy tree canopy and implementing larger infrastructure projects like stream restoration can help stabilize the built environment. However, these interventions may not be enough to mitigate the impacts of severe flooding.
Long-Term Resilience
Long-term climate resilience requires land use and zoning decisions that preserve floodplains and natural drainage patterns. Communities that have become "safe to flood" by creating open spaces that trap and drain water during floods are a promising model. Copenhagen's Cloudburst Management Plan, for instance, is a blueprint for managing extreme weather events.
Challenges in Philly's Suburbs
Bringing "safe to flood" infrastructure to Philly's suburbs is a daunting task. The vast suburban landscape, with its collection of boroughs, townships, and county lines, makes unified action difficult. Finding the funding for costly repairs and replacements is also a significant challenge, especially with varying political will among municipalities.
Progress and Solutions
Despite the challenges, progress is being made. Montgomery County, for example, has led flood mitigation planning studies and is currently working on a floodplain restoration project along the Wissahickon Creek. Lower Merion has hired a full-time sustainability manager and completed its first sustainability plan. Radnor Township has adopted a comprehensive climate plan, and Haverford Township aims to achieve 100% zero-carbon renewable power by 2035.
The Pennsylvania Department of Environmental Protection has also announced funding for environmental projects, including stream restoration and stormwater management. As Jamila Winder, a Montgomery County Commissioner, says, "We're seeing that when we work across different levels of leadership, we can come together to solve some of these complex issues."
Conclusion
The Philadelphia region's suburbs are at a critical juncture, facing the urgent need to adapt to a changing climate. The challenges are complex and multifaceted, but with coordinated efforts and innovative solutions, there is hope for a more resilient future. As we navigate these uncertain times, it is crucial to recognize the importance of community collaboration and sustainable infrastructure planning.
