Non-watercourse-related agreements which may contain provisions relevant to the watercourse in question. Treaties of friendship and cooperation may contain compulsory dispute resolution provisions which may apply to possible disputes concerning a watercourse. In bilateral environmental agreements that contain obligations, such as the duty not to cause transboundary harm, non-discriminatory, exchange of information and consultations, prior notification is of relevance and may have bearing on the use of the watercourse. Boundary treaties whose primary purpose is to delineate national boundaries also deal with the water that crosses, or constitute an international mechanism with jurisdiction over the watercourse.