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    • EXPLORE
    • Welkinweir–Green Valleys Headquarters
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Back Home
  • Our Work
    • Learning
      • ECO Summer Camp
      • Youth Programs at Welkinweir
      • School Programs
      • Adult Programs
    • Watershed Science
      • Water Quality Data
      • Watershed Flow
      • Impervious Cover
      • Watershed Issues
      • Find Your Watershed
      • Volunteer Monitoring Programs
    • Stewardship
      • Special Protection
      • Streamside Forest Buffers
      • Stream Clean Ups
      • Green Infrastructure
      • Agricultural BMPS
      • Watershed Issues
      • Beginnings
    • Streamlines
  • Get Involved
    • Membership and Support
    • Report Environmental Issues
    • Volunteer
    • Stay Connected
  • About
    • Board and Staff
    • Streamlines
    • Welkinweir–Green Valleys Headquarters
    • Beginnings
  • Events
    • Special Events
  • EXPLORE
    • EXPLORE
    • Welkinweir–Green Valleys Headquarters

We connect stewards of all ages to the environment.

Our programs are designed to instill awareness and understanding of the natural world through outdoor activities, exploration, and intensive study.

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We partner with the community to restore watersheds.

We work with community groups, other non-profit organizations, local governments, and others to carry out our mission.

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Science-based restoration, conservation, and education.

Our staff and volunteers are out in the streams, collecting water quality and quantity data and using the latest geospatial software to create a complete picture of the health of our watersheds.

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Welkinweir: "Where sky meets water"

Our headquarters is an oasis of natural beauty in East Nantmeal Township, and a living laboratory for the study of sustainability and ecological issues.

Visit us

CREEK SNORKELING

Visit another world!

GREAT EGRETS AT WELKINWEIR

A spectacular but rare visitor to our local waters

Learning

Engaging all ages

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Stewardship

Stewardship

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Watershed Science

Watersheds

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Streamlines

GVWA's Newsletter

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Special Events

Upcoming Events and Programs

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Bird Walk with Valley Forge Audubon Society

SAVE THE DATE! ADOPT-A-HIGHWAY

Join the Litter Lifters to cleanup Green Valleys adopt-a-highway section on Rt 100 from Prizer Road to Rt […]

ANIMALS OF THE NIGHT HIKE

Discover the nocturnal world and learn more about our nighttime neighbors! Meet a live owl from Indian Run […]

Bird Walk at Welkinweir

Bird Walk at Welkinweir

The arboretum will be open from 8 a.m. till 1 p.m. Attend an 8 a.m. bird walk with […]

Welkinweir Holiday Open House

Holiday Open House Kick off the holiday season with food, drink, festive music and beautifully decorated rooms!   Pre-registration […]

FOREST THERAPY WALK

FOREST THERAPY WALK

Friday, October 25, 9 – 11 a.m. Experience the healing and wellness-promoting effects of Forest Bathing as you […]

Adopt a Highway Road Cleanup, Sunday, October 13, 7:30 a.m.

Adopt a Highway Road Cleanup, Sunday, October 13, 7:30 a.m.

Meet at Little’s (John Deere dealer) 2555 Pottstown Pike Join Green Valleys Watershed and the Litter Lifters of […]

Penn’s Woods Celebrated

Penn’s Woods Celebrated

PENN’S WOODS CELEBRATED Art Exhibit, Sunday, October 20, 2 – 4 p.m. Welkinweir Estate House A visual homage […]

Owl Prowl!

After Dark Adventure! Friday, November 8, 7:30 p.m. While Pennsylvania is home to a number of owl species, […]

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