This map layer shows the forestry management zones established by the Columbus Recreation and Parks Department, Urban Forestry program. The forestry management zones are based upon static geographical features (rivers and major highways) or the centerline of prominent streets. In cases where a waterway is used as a border, the border is the center line of respective waterway or the centerline of a branch of the waterway located to the appropriate side of an island within the waterway. In the case where a streets is used as a border, the border is the centerline of the street. For a street with medians, the border is standardized along the same side of the medians along the entire length of the street. All exterior borders conform to the City of Columbus (OH) corporate boundary, Some interior forestry zone borders conform to the borders of adjoining cities and townships.