As climate change brings more intense rainfall events, the importance of natural solutions to manage stormwater becomes more evident. One such solution lies in the power of trees – these majestic and often underappreciated assets can play a significant role in reducing stormwater and mitigating flooding in our town.

Intense storms can overwhelm stormwater infrastructure, leading to flooding, property damage, and increased erosion. Traditional engineering solutions like storm drains and retention basins have been essential. Still, they are often costly and may have limitations, especially in the face of more frequent and severe storms. This is where trees come into play.

Trees are nature’s own stormwater managers. Their canopies intercept rainfall, reducing the impact of raindrops on the ground and preventing soil erosion. The leaves and branches also slow down the flow of rainwater, allowing it to infiltrate the soil gradually. This natural filtration process helps to recharge groundwater and reduce the volume of water that enters storm drains.

Tree roots are like nature’s sponges, absorbing excess water from the soil. This not only prevents runoff but also reduces the strain on stormwater systems. Moreover, trees have the ability to uptake water through their roots and release it through a process called transpiration, which effectively cools the environment and lessens the load on stormwater systems during hot and rainy periods.

While trees can provide numerous benefits in stormwater management, the impact of building and urban development on trees cannot be ignored. The removal of trees to make way for buildings and infrastructure disrupts the natural stormwater management ecosystem that trees provide. When trees are removed, the soil loses its structural integrity, making it more prone to erosion. The absence of tree canopies also allows rainwater to hit the ground directly, increasing runoff and reducing the opportunity for infiltration. 

So as a homeowner, what can you do to mitigate the effects of building and development? The first is, do not clear-cut trees. Clear-cutting is the action of removing all of the trees from a specific area. By clear-cutting, that area of the community will become more susceptible to flooding and stormwater. In the same vein, do not remove healthy trees. Unless the tree is dead or posing a health hazard, the tree should remain upright. Another way to mitigate the effects of urban development is to utilize green infrastructure. Green infrastructure is an approach to water management that protects, restores or mimics the natural water cycle. Some examples include rain gardens, permeable pavements, green roofs, infiltration planters, trees, and tree boxes, and rainwater harvesting systems.