Stormwater Mitigation

Urban tree canopy and other vegetation (also called Green Stormwater Infrastructure or GSI) mitigates stormwater run-off by intercepting precipitation which can be absorbed by the vegetation and infiltrated into the soil.  This results in reduced run-off during heavy rain events which in-turn reduces the cost of traditional stormwater infrastructure (gray infrastructure) and reduces water pollution into our rivers and streams.

Treasure Valley's tree canopy mitigates 125 million gallons of stormwater annually, saving $1.1 million in infrastructure costs. Through future strategic tree planting (showcased below), we can further improve stormwater benefits throughout our region