The Al Sabo Land Preserve was established in the early 1970’s in order to protect the groundwater supply of the Atwater wellfield. The 741 acres were purchased in the late 1960’s and a master plan was developed for its use as a passive recreation nature preserve. The City of Kalamazoo passed an ordinance that would ensure its protection as a water resource. The wetlands and sandy soils serve as a recharge area for the area’s groundwater.