Responsible for the Lycoming County and Lycoming Creek Watershed Stormwater Management Plan and Model Stormwater Ordinance. The purpose of the Stormwater Plans and Model Ordinance is to better manage stormwater to maintain or decrease current flood levels, prevent damage to stream banks, improve water quality, and increase groundwater infiltration.

Provides flood protection, reservoir water supplies, water science, and information and planning to the citizens of Chester County in an effort to sustain the natural quality, quantity, and biodiversity of the County's water resources. Programs include flood protection, storm and water quality improvement, sustainable water resources management, and water information and outreach. This service does not supply water.