Hydrologic Cycle

Undisturbed Water Cycle

Rainwater runs off the land into water bodies. It also percolates into the soil. Percolation recharges groundwater and filters pollutants. Through both pathways, water makes its way into our creeks, ponds, wetlands, rivers, and oceans.

Impacted Water Cycle

Development puts impervious surfaces, roads, sidewalk, and roofs, that prevent percolation. Most of the rainwater runs off the land carrying pollutants into water bodies. Without percolation, flooding is more frequent and severe.