Some of the authorities in WAC 365-196-730 and 365-196-735 require planning for particular purposes for areas related by physical features, such as watersheds, rather than by political boundaries. Moreover, the environmental and ecological systems addressed in resource management, service by utilities, fish and wildlife management and pollution control are generally not circumscribed by county and city lines. Planning entities should attempt to identify these geographic areas which require a regional planning approach and, if needed, work toward creating collaborative processes involving all agencies with jurisdiction in the relevant geographical area. This approach should assist in achieving interjurisdictional consistency, consistency with the countywide planning policies and, where applicable, multicounty planning policies. See WAC 365-196-305 regarding countywide planning policies.