What is Stormwater runoff?
Stormwater runoff is generated when precipitation from rain and snowmelt events flows over land or impervious surfaces and does not percolate into the ground. As the runoff flows over the land or impervious surfaces (paved streets, parking lots, and building rooftops), it accumulates debris, chemicals, sediment or other pollutants that could adversely affect water quality if the runoff is discharged untreated. The primary method to control stormwater discharges is the use of best management practices (BMPs).
Lower Moreland Township Municipal Separate Storm Sewer Systems (MS4)
Urban areas that collect stormwater runoff in municipal separate storm sewers (MS4’s) and discharge it to surface waters are required to have a permit under the federal Clean Water Act. The Environmental Protection Agency (EPA) stormwater regulations established two phases for the municipal stormwater permit program.
Phase I stormwater NPDES permits cover stormwater discharges from certain industries, construction sites involving five or more acres, and municipalities with a population of more than 100,000. In 1999, EPA issued the final Phase II stormwater regulations. The Phase II regulations expand the requirement for stormwater permits to all municipalities located in urbanized areas and to construction sites between one and five acres.
Lower Moreland Township has stormwater management regulations and ordinances for the development and construction process.
Do- It- Yourself Stormwater Management Projects
Managing stormwater has become vital in helping to protect ponds and streams from stormwater pollution, reduce flooding, foster wildlife habitat, recharge groundwater, and conserve water resources. Homeowners can better manage stormwater on their properties by implementing these do-it-yourself stormwater treatment practices:
• Rain Barrel- is used to collect rainwater from your roof and store it for later use, hence reducing stormwater runoff from your property. This water can be used for watering lawns, gardens, and indoor plants.
• Rain Garden- these gardens use mulch, soil, and plants to capture and absorb stormwater. Compared to a conventional lawn, rain gardens allow for 30 percent more water to soak into the ground.
• Pervious Walkways & Patios- create a pathway using pervious pavers, which look like traditional stone, brick, or concrete. These pavers have spaces between them and a stone reservoir underneath. The reservoir absorbs and stores rainwater, reducing the amount of runoff from your property.
• Dry Well- build a dry well to collect and infiltrate roof runoff at gutter downspouts, roof valleys, and other places where large amounts of water flow off a roof. Dry wells help to reduce erosion on your property and can reduce sitting water.
The Department of Environmental Protection (DEP) is now requiring municipalities located within certain watersheds to adopt more comprehensive stormwater management plans. Lower Moreland is located within three distinct watersheds: Pennypack Creek, Neshaminy Creek, and Poquessing Creek. Per Act 167, the Township has adopted new ordinances to meet the stormwater requirements set forth by DEP.
Pennsylvania Department of Environmental Protection (DEP) Stormwater Management
US Environmental Protection Agency (EPA)
National Menu of Stormwater Best Management Practices
PA Environmental Quality Board
Best Management Practices for Businesses
Montgomery County Conservation District
Pennypack Ecological Restoration Trust
Lower Moreland Township Code