An Informative Introduction

Construction / Post-Construction

New York State Department of Environmental Conservation (NYSDEC) requires projects disturbing an acre or more of soil to obtain coverage for stormwater discharges under the State Pollution Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Construction Activity (NYSDEC CGP).

Affected Projects

The Construction / Post-Construction Program applies only to certain projects, referred to as covered development projects. Covered development project means development activity, private or public, that involves or results in a soil disturbance greater than or equal to 20,000 square feet or the creation of 5,000 square feet or greater impervious area.

Stormwater Construction / Post-Construction Public Data


Active Construction Permits

This is a list of active Stormwater Construction Permits.


Active Maintenance Permits

This is a list of active Stormwater Maintenance Permits.


Post Construction SMPs

Existing Post Construction SMPs Constructed under the NYSDEC General Permits.