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 Non-Profits allows members 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.