Stormwater Management
Stormwater is water runoff that accumulates in natural and/or constructed storage facilities, and stormwater systems during and 
immediately following a storm event.
Upper Merion Township Code Chapters 140A and 140B provide standards to safeguard persons, to protect property and water resources, and to promote the public welfare by regulating and controlling the design, construction, quality of materials, use, location, and maintenance of grading, excavation, fill and site development of activities.
Permit Information:
- 140A – Stormwater, Grading & Erosion Control Class A Permit Application
- 140B – Stormwater, Grading & Erosion Control Class B Permit Application
Report a Concern
To report a stormwater concern (sinkholes, runoff, erosion, debris in inlets, etc.) please contact 610-265-2606 or submit a request for service.
Stormwater Management Plan
In 1995 the Upper Merion Board of Supervisors commissioned an township-wide Stormwater Management Plan for the purpose of identifying and evaluating existing stormwater-related problems within the township, evaluating the impact of future development activities on runoff-related problems, and developing a plan for the implementation of prioritized solutions in the chronic problem areas of the township.
In 2017, the BOS commissioned an updated Stormwater Master Plan for the township to properly and effectively address stormwater deficiencies and needed infrastructure improvements throughout the township. The Upper Merion Sanitary and Stormwater Authority worked with Gannett Fleming/Wood Environment & Infrastructure Solutions team on this study, which involved a public survey, a review of records collected by the township emergency management staff, and a study of runoff and flooding from seven significant watersheds within Upper Merion. The findings are summarized within the township-wide Stormwater Management Plan.
Municipal Separate Storm Sewer Systems (MS4)