Fall-Winter 2012
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S t r e a S t r e a m l i n e s Volume 48 Issue 4 from Green Valleys Association at Welkinweir Fall/Winter 2012 GVA’s Watershed Assessment Program Martin Challenge In order to develop a good assessment of a watershed’s health status, we need to We have received a $25,000 challenge collect data of different kinds. And, since water quality varies significantly from stream grant from the George and Miriam Mar- to stream we need to do it at many places throughout the watershed. tin Foundation in support of our watershed programs. Please take advantage of the There are many kinds of data we can collect and use as indicators of the health of a Martin Challenge and support GVA and watershed. GVA is currently collecting four of these: the enduring work we are doing for our 1. In the stream: Chemical and Microbiological Water Quality Data beautiful Chester County Watersheds, by 2. In the stream: Indexes of Biotic Integrity (IBIs). making a special gift to Green Valleys. 3. In and along the stream: Habitat Assessments (HAs) 4. Along the stream and throughout the watershed: Land Cover Each watershed typically is made up of many waterways. For example, the Pickering Creek Watershed is 38.8 square miles. Within it is the main stem of the Pickering Creek, plus there are additional named streams—such as Pigeon Run—that are tribu- taries to the Pickering. As mentioned above, water quality data and other indicators vary significantly from stream to stream, making it necessary to define smaller study areas called subwatersheds. Subwatershed mapping begins with “first order” streams—streams which do not have any other streams flowing into them. Where two first order streams join, they form a “second order” stream. The point where they join is called an exit point and the subwatershed above this exit is delineated in GIS (see example of a subwatershed in the north part of the Birch Run Watershed). GVA has delineated 68 subwatersheds in Children’s Health and the Pickering. Each subwatershed is unique and can be quite distinct from its nearest Nature Education: neighbors. Using Geographical Information Systems (GIS) is the most effective way to organize A Natural Fit and view all the data available about a watershed. It is also the most effective way to As a friend of GVA, you may already carry out planning, convey vital watershed information to the public, and show the know that nature education and free time need for projects and funding. in natural, outdoor settings are highly beneficial to children’s health and well- 1 - Chemical and Microbiological Water Quality Data being. In the growing trend toward tech- nology as both an educational tool and as Water samples from a stream are ana- a primary source of recreation, it is lyzed for a variety of parameters. important to remember that nothing can These samples yield a “snapshot” of replace the hands-on experiences children the water quality at the time the gain by playing and participating in sample was taken; long term testing nature. No matter how technologically is needed at permanent sites to build advanced we become, the fact remains up baseline and trend information. that humans are part of the natural envi- Historical Data: The USGS, Penn- ronment, not separate from it. And it is sylvania Department of Environmen- important to involve our children in the tal Protection (DEP), and other or- natural world, beginning in the early years ganizations have been sampling and of their development. See “Watersheds,” page 10 See “Nature,” page 6 GREEN VALLEYS ASSOCIATION at WELKINWEIR c o m m u n i t y Green Valleys Association’s mission is to protect and preserve the quality and quan- tity of water resources in northern Chester GVA Hosts PHS Tree Tenders Program County through advocacy and education. This past September, 20 participants came to Welkinweir to learn about trees from the Welkinweir Pennsylvania Horticultural Society (PHS) and the Society’s partners. In a series of Our Welkinweir headquarters in East three Tuesday evenings, the group learned about tree biology, the benefits of trees to Nantmeal Township, Chester County, is a spectacular property which showcases GVA’s urban and suburban environments, proper tree siting and planting, stress factors for Mission. Originally home of GVA founding trees, and the principles of good tree care. members Everett and Grace Rodebaugh, the 197-acres of permanently preserved land fea- This “Tree Tenders” training program is part of a PHS initiative to replenish the tree tures a 55-acre arboretum, ecologically di- populations of 13 counties in southeastern Pennsylvania, southern New Jersey, and verse wetlands, forested riparian buffers, Delaware. The umbrella project is aptly called “Plant One Million,” and is the nation’s meadows, and forest habitats. The property largest multi-state tree campaign. Its goal is to restore the tree canopy cover in the hosts our many environmental education pro- greater Philadelphia area to 30 percent. The program supports the goal of GVA’s grams and features an ever-growing collec- tion of projects that demonstrate sustainable Watershed Restoration Program to reforest open lands and waterways within our stew- practices. See hours p. 4. ardship watersheds. 1368 Prizer Rd., Pottstown, PA 19465 The “TreeVitalize” program (part of Plant One Million) has provided funding for trees and tree shelters for GVA’s reforestation projects. We thank PHS for bringing Phone (610) 469-4900 the Tree Tenders program to us, and look forward to future collaborations. Fax (610) 469-4990 Email [email protected] Web www.greenvalleys.org Officers Nominate a Stream for Some TLC Ed Bacon - President Have you seen “trashy-looking” stretches of streams here in Chester County? Green Allen Heist - Vice President Valleys Association wants to organize a stream clean-up in Spring 2013! As stewards John Eldridge - Treasurer of our watersheds we need to protect and connect with the streams and rivers around Jo-an Rechtin - Secretary us. But we need your help to find areas where the need is greatest. Do you know of a local streamside park or stretch of road bordering a creek that is littered with bottles, Staff cans, or even car tires? Please help us identify candidate clean-up sites in your neigh- Victoria Laubach - Executive Director borhood. Call the Green Valleys staff at 610-469-2218 to let us know, or e-mail us at [email protected] [email protected]. Dawn White -Nature Education Director [email protected] Michael Bullard - Watershed Science Coordinator Pipeline Proposed for Northern Chester County [email protected] Beth Moosman - Welkinweir Horticultural This fall a new pipeline was proposed for transporting natural gas from the Marcellus Fellow Shale region in northern Pennsylvania to existing pipelines in Chester County. [email protected] A Federal Energy Regulatory Commission application is expected soon for this Kelsey Stanton - Watershed Restora- “Commonwealth Pipeline.” The map of the pipeline currently being circulated shows tion Specialist a potential of 15 crossings of Exceptional Value and High Quality streams in northern [email protected] Chester County. Additionally, the pipeline will impact many tracts of conserved land and open space. Margot Taylor - Watershed Restoration Coordinator & Nature Educator Just a few years ago, new pipelines were being proposed to bring gas up from the margot @greenvalleys.org south to markets in the northeast. There were also proposals for new liquefied natural gas (LNC) terminals, where foreign gas would be unloaded and put into the network Elaine Armbrust - Bookkeeper of natural gas pipelines. With the introduction of the controversial natural gas extrac- [email protected] tion technique known as “fracking,” there is now a glut of gas on the market and Streamlines, our quarterly newsletter, high- drillers are looking to move gas the other way, from north to south. There are even lights local and regional activities focusing proposals to operate existing LNG terminals in reverse—where domestic natural gas on water resource conservation and preser- vation. Available through membership or will be compressed into a liquid and shipped overseas. online at our website. Concerns over the likely environmental impacts of this pipeline proposal are high. Pamela Baxter -- Streamlines Editor GVA is collaborating with some of the other groups that are working on this issue, [email protected] and we will keep our members updated. Page 2 s t e w a r d s h i p Naturalized Stormwater Basins: Enhanced Stormwater Filtration How GVA is using new mapping software to identify watershed protection opportunities As a reader of Streamlines, you are no the periphery of corporate campuses, and ralized basin, the lawn on the basin slopes doubt aware of the many issues surround- the stretches of lawn bordering your kids’ and bottom is replaced with a variety of ing stormwater runoff. In areas where sports fields. meadow plants that simulates a wetland development has replaced forested land, system. These plants have deeper roots While the basins do capture stormwater stormwater runoff carries more pollutants that are more efficient at aiding rainwater runoff, almost all of them fail at protect- and sediment from streets, rooftops, and infiltration and pollution removal than turf ing and improving the water quality of our lawns to local streams. This damages habi- grass. rivers. This is due to a number of factors: tat and can compromise roads, bridges, a manicured turf surface does little to slow There are many benefits to this natural- and buildings through increased flooding water entering the basin and is ineffective ized approach. Naturalized basins and streambank erosion. This leads to at filtering out pollutants; heavy machines costly expenditures for stormwater man- • have been found to remove between used to excavate the basins compact the agement and drinking water treatment.