The Pike County Conservation District published this overview of proactive stormwater management in their most recent District newsletter--

Stormwater runoff is the portion of rainfall or snowmelt that is not absorbed by the land’s surface or evaporated into the air. It runs over land to storm drains or streams.

Natural ground, or soil, allows rain to be absorbed by the earth. The soil’s surface is referred to as “pervious” because it allows rain to infiltrate.

When the natural surface of the land is replaced with hard surfaces such as paved roads, parking lots and rooftops, the amount of runoff increases because these “impervious” surfaces do not allow rain to infiltrate.

Negative Impacts

Major changes can occur within a watershed when the amount of stormwater runoff increases. More surface water is delivered to streams more frequently and less water infiltrates the soil to replenish groundwater supply and maintain stream base flow.

 In addition, runoff washes a variety of pollutants (oil, gas, detergents, pesticides, sediment) into streams.

These changes cause problems in watersheds and streams including:

-- Stream bank erosion

-- In-stream sediment deposits

-- Increased nuisance flooding

-- Property damage

-- Increased public cost to maintain infrastructure

-- Depleted groundwater levels for supplying wells

Proactive Measures

Rethinking how development is regulated through proactive land development ordinances and utilizing best management practices (BMPs) throughout the site design will improve the management of stormwater runoff.

BMPs are practices, structures and techniques that minimize the adverse effects of increased runoff. Although a wide variety of BMPs exist, they can be generally categorized as either detention (rate), infiltration (volume) or filtration (water quality) BMPs.

Some BMPs fulfill all these functions, however, most are designed with a primary function. Selection of particular best management practices is based on site conditions and goals.

Early and effective stormwater planning and management by communities and developers can provide significant long-term cost savings while supporting resilience, economic development and quality of life.

Check out Pike County Conservation District’s Stormwater Management Resources. And, our video series on Stormwater Best Management Practices.

-- Part 1 – Overview of BMPs

-- Part 2 – Installation Examples

-- Part 3 – Dirt, Gravel and Low Volume Road Program

Click Here to download the District’s Homeowners Guide To Stormwater Management.

For more information on programs, technical and financial assistance to landowners, visit the Pike County Conservation District website.

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How You Can Help

Want To Find A Watershed Group Near You? Try The PA Land Trust Assn. Watershed Association Finder

Take Action

How Good Is The Water Quality In Streams In Your Community?  Take A Look, Then Act

[Posted: Sept. 4, 2018]

9/10/2018