The purpose of the O open land district is to provide for limited development of those areas of the city that are not suited for permanent occupancy or residence due to some specific characteristic of the land. Such lands may be subject to periodic flooding, erosion or fire hazard. Publicly owned land and uses of a predominantly open nature are included in this district. The following regulations, set out in this chapter, shall apply to all land in the O open land district. (Ord. 1000 § 31.00, 1955)