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Make a difference for clean water! Join us and use your voice for the Clark Fork.

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How much would you like to donate?

  • $ 50.00

    Member: Basic Membership

  • $ 75

    Member: River Supporter

  • $ 100

    Member: Charter Member

  • $ 250

    Member: Major Contributor

  • $ 500

    Member: Watershed Sponsor

  • $ 150

    Affinity Float Sponsorship: 1 child

  • $ 1000

    Member: Patron

How often do you want to make your donation?

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Card Security Code
The card security code is a unique three or four digit number, separate from your credit card number. Your security code can be found in the following locations on the following cards:
Your card security code for your MasterCard, Visa or Discover card is a three-digit number on the back of your credit card, immediately following your main card number.
Visa Card
American Express
The card security code for your American Express card is a four-digit number located on the front of your credit card, to the right of your main credit card number.
Visa Card
If your security code is missing or illegible, please call the bank or credit card establishment referenced on your card for assistance.

If you have a special purpose for your donation, please let us know.

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Giving OptionRequired

Your donation is securely processed by our nonprofit partner, Network for Good, with a 3% transaction fee to cover credit card fees, bank fees, and other processing costs. Please consider chipping in an additional 3% so 100% of your donation amount goes to us.

Make a difference for clean water! Join us and use your voice for the Clark Fork.