Join us!  We welcome new and renewing members.

You can sign up for a new membership, renew or upgrade an existing membership, and make a donation in addition to your membership using the form below. To donate separately from membership please use the Donations page.

PayPal Business Accounts for NonProfits allows donors to make secure contributions through their PayPal account —if you have one— but also with a regular credit card.

Contact us at if you have any questions.

Please fill out the form below to sign up for a new membership, renew, or donate.

If you prefer, you can join or renew via the US Postal Service. Click HERE for a PDF membership form that you can print and fill out and mail in with a check. Any questions please contact the membership chair at

GMCT is an all volunteer, nonprofit 501(c)3 corporation. 100% of our funds are used to forward our mission of preserving the flood plain’s agricultural, wildlife habitat, wetland, and archeological resources for the benefit of the public through ownership and stewardship.