233 Miller Road Rochester, PA 15074 | 724-774-7822 | secretary@newsewickley.com
Stormwater Management
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Intro to StormwaterIntro to Stormwater II


Stormwater is water from precipitation that flows across the ground and pavement when it rains or when snow and ice melt.  The water seeps into the ground or drains into what we call storm sewers.  These are the drains you see at street corners or at low points on the sides of streets.  Collectively, the draining water is called storm water runoff.

Stormwater becomes a problem when it picks up debris, chemicals, dirt and other pollutants and flow into a storm sewer system or directly to a lake, stream, river, wetland, or coastal water.  Anything that enters a storm sewer system is discharged untreated into the waterbodies we use for swimming, fishing and providing drinking water.

Federal stormwater Regulations and the Pennsylvania Stormwater Management Act require counties and municipalities to develop and implement a stormwater management program.  These regulations, along with the Federal Cleanwater Act, govern what local municipalities must do to reduce discharge of pollutants into local rivers, streams, lakes and water sheds.

Four specific areas of the Township have been identified by DEP as stormwater management areas.  They are designated as MS4-1 9th Ext. Street Area, MS4-2 Northern Portion of Rt. 989, MS4-2 Southern Portion of Rt. 989 and MS4-3 Sunflower Corners Area.   See the maps below

MS4-1 Area  (Harvey Run Road & 9th Street Area)

MS4-1 Harvey Run - 9th St. Area

MS4 – 2 Area  (Route 989 Northern Portion)

MS4-2 Rt. 989 Northern Portion

MS4 – 2 Area  (Route 989 Southern Portion)

MS4-2 Rt. 989 Southeren Portion

MS4 –  3 Area  (Sunflower Corners)

MS4-3 Sunflower Corners

Watch for educational information to be posted to the website from time to time.  Brochures are available to the Township Office.

For more information visit:




Stormwater Management Ordinance

Ord 202

Ord 166

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