Join us in protecting water, conserving, and restoring the Gunpowder, Bush, Little Gunpowder, Bird, and Middle Rivers, their communities, and sensitive species. Gunpowder RIVERKEEPER® is a grassroots, advocacy based, non-profit, tax-exempt 501 (c) ) (3) membership organization charged with protecting, conserving and restoring the Gunpowder, Bird, Bush, and Middle Rivers and their watersheds for all users.