GRK) is a grassroots, advocacy based membership organization charged with protecting, conserving and restoring the Gunpowder River and its Watershed. GRK works to strengthen ties within the communities that benefit from this vital water resource by engaging in outreach activities, which have an inherent stewardship message that transcends economic, social and educational boundaries. Interested in doing your part to protect your river? To Gunpowder RIVERKEEPER ®. Theaux Le Gardeur, the RIVERKEEPER ®.