Make Donations

You can use this PayPal button to make a donation using a credit card:

You can also support the Lower San Pedro Watershed Alliance by sending a check or money order to:

Lower San Pedro Watershed Alliance

PO Box 544

Mammoth AZ 85618

Any amount is appreciated. All donations and expenses are recorded by our treasurer and reported at our general meetings. For more information on our current expenses, please write to the chair or secretary at the address above or at

Tax Information

The Lower San Pedro Watershed Alliance (LSPWA) was granted Federal tax exempt status with the Internal Revenue Service (IRS), under section 501 (c) (3) of the IRS code.

Contributions to the LSPWA, a public charity, are deductible under section 170 of the IRS code.

This status was granted by the IRS on October 9, 2014, and retroactively applies to all donations made to the LSPWA since its incorporation on June 21, 2013.

Zapata Wash confluence with the lower San Pedro River,

at the end of monsoon season in 2013.