Additional 310 Resources DNRC Conservation District Boundary Map This is a map of Montana’s Conservation District boundaries. If you are unsure what district your 310 project may be in, come here first to check. DNRC Stream Permitting Guide This document was compiled by the Montana DNRC to help guide Conservation District Supervisors when reviewing 310 applications. Applicants will find the guide helpful when planning 310 projects. DNRC Stream Permitting Application This map plots 310 applications across the state. The public can view 310 project sites and access information about permits.