Green Valleys Association of Southeastern PA, Inc. (Pottstown, PA)


  • Name:Mrs. Dawn White
  • Title:Education Director


  • Organization Name:Green Valleys Association of Southeastern PA, Inc.
  • Address:1368 Prizer Road
    Pottstown, PA 19465
    United States

Work Phone

  • Main phone:610-469-4900
  • Main fax:610-469-4990

Work Web

Other Phone

  • Direct phone:610-469-8646

User Email



  • Mission:
  • Green Valleys Association (GVA) is a non-profit organization located in northern Chester County, Pennsylvania, in the Delaware River Basin. Founded in 1964, GVA’s mission is to protect and preserve the quality and quantity of water resources in northern Chester County through advocacy and education.

    Our home of Welkinweir Arboretum serves the local community by providing unique learning opportunities for children and adults alike. A beautiful 197-acre estate characterized by forest, fields, ponds, streams and wetlands, Welkinweir is an educational center, providing an architectural, horticultural, historical, and environmental sanctuary.

    GVA’s Environmental Education programs strive to raise awareness of the natural world, as well as natural resource issues, by engaging participants in hands-on, nature awareness activities. Programs include stream monitoring, evening and weekend family nature programs, summer nature camp, and educational programs for schools, scouts and other youth and adult groups. Programs are offered at Welkinweir and at community centers.

  • History:
  • 1964-65 Formed the French Creek Watershed Association.

    1965-68 Successful opposition to the proposed Corps of Engineers Dam on French Creek.

    1968 Changed the name to Green Valleys Association.

    1972 Added of Valley Creek Watershed to the original drainage areas of French Creek, Pigeon Creek, Pickering Creek and Stony Run.

    1978 Sued Knickerbocker Landfill to stop its leachate from polluting Valley Creek.

    1982 Obtained High Quality designation of Pigeon Creek and Scenic River designation for French Creek.

    1988 Teamed with the Great Valley Coalition and Trout Unlimited to win a suit against Warner Company’s Cedar Hollow Quarry and to have Valley Creek designated as Exceptional Value.

    1990 Developed the Sustainable Watershed Management Plan for northern Chester County, working with Cahill Associates and the Brandywine Conservancy.

    1993 Obtained Exceptional Value designation for Valley Creek, working with Trout Unlimited.

    1995 With South Coventry Township, prevented Perrier from excessive water extraction from springs on Harmonyville Road.

    1997 Moved our headquarters to Welkinweir, the home of the
    Rodebaugh’s, original founders of GVA.

    1998 Obtained Exceptional Value status for the upper portion of French Creek Watershed.

    2000 Demolished the Arena Slaughterhouse on Pughtown Road and converted the site to a park.

    2001 Halted Columbia Gas Transmission from damaging wetlands as it was installing new transmission lines.

    2002 Expanded summer environmental camp to include 486 campers.

    2003 Piloted an Environmental School Program with the Phoenixville Area School District.
    Assisted in construction of a dairy farm nutrient containment structure in West Nantmeal Township.

    2004 Submitted petition to PA-DEP to upgrade the Pickering Creek to Exceptional Value status.
    Achieved “Existing Use Designation” listing as Exception Value streams for Lower French Creek and Beaver Run.

    2005 Completed the construction of a Porous Pavement Parking Lot/Demonstration site at GVA’s headquarters, Welkinweir.
    Launched program with the Clean Water Fund to adopt local and state level policies and model ordinances for well-head protection, stormwater management, and water supply/waste planning issues in the Schuylkill River watershed.

    2006 Upgraded the Welkinweir estate house to an Energy Star heating system and added solar panels and a small-scale hydropower system to reduce our CO2 emissions.
    Increased number of nature awareness programs offered to the community through establishment of annual Family Nature Programs to Phoenixville Area Library.

    2007 Co –authored two publications, “The Effects of Special Protection Designation, A Guide for Communities,” and “Stream Redesignation Handbook.”
    Extended the Environmental School Program, currently active in the Phoenixville, Downingtown and O.J Roberts School Districts, to Pottstown Area School District.
    Expanded the Scout programs.

    2008 Created the “Buffers 100 Initiative” with members of the PA Campaign for Clean Water; an initiative that requires a minimum 100-foot forested buffer along stream banks in all new development in Pennsylvania.
    Launched a Healthy Watersheds – Healthy Schools Initiative, a program that brings environmental advocacy to schools by promoting green policies and practices at the district and school levels, in order for them to serve as models for change.
    Created, with Federation of Northern Chester County Communities and Chester County Planning Commission – “Regional Resource Protection Plan”.
    Developed and implemented standard program evaluation for all environmental education programs.
    Expanded Family Nature Programs to the Henrietta Hankin Library.

    2009 Environmental education programs reach more public schools through new partnerships with Owen J. Roberts School District officials.
    Increased number of summer nature camp opportunities for children ages 4-14.

    2010 Developed the Watershed Science Education program.

  • Year established:1964
  • Endowment:Unknown


  • Executive / Trustee board size:12
  • Advisory board size:5
  • Staff size:4


  • Organization type:Grantseeker
  • Country of registration:United States
  • Tax Determination Letter:Unknown
  • IRS Section:501(c)(3)
  • Tax ID:23-7025192

IRS Business Master File Information

  • EIN:237025192
  • Sort (Secondary) Name:
  • Care Of Name:
  • Organization Address:1368 PRIZER RD
  • Organization City:POTTSTOWN
  • Organization State:PA
  • Organization Zip:19465-8711
  • Group Exemption Number:0000
  • Subsection Code:03
  • Classification Code(s):1
  • Subsection/Classification Desc.:Charitable Organization
  • Affiliation Code:3
  • Ruling Date:June, 1969
  • Deductibility Code:1
  • Foundation Code:15
  • Foundation Code Desc.:Organization which receives a substantial part of its support from a governmental unit or the general public 170(b)(1)(A)(vi)
  • Activity Code(s):161, 180, 350
  • Activity Code Desc.(s):Scientific research (diseases), Contact or sponsored scientific research for industry, Preservation of natural resources (conservation)
  • Organization Code:1 (Corporation)
  • Exempt Org. Status Code:01 (Unconditional Exemption)
  • Tax Period:September, 2016
  • Filing Requirement Category:01 (990 (all other) or 990EZ return)
  • Accounting Period:September
  • NTEE Code:C320
  • Asset Amount:$4,599,454
  • Asset Code:6 ($1,000,000 - $4,999,999)
  • Income Amount:$1,305,328
  • Income Code:6 ($1,000,000 - $4,999,999)
  • 990 Revenue Amount:$795,260
  • Last Updated:11/18/2017 9:27:28 am

This information is directly from the IRS Exempt Organization Business Master File at Exempt Organizations Business Master File Extract. This information is not under the control of the Common Grant Application and is collected and compiled and can only be changed by the IRS.