A series of old drainage ditches up to 1.5 meters deep indicate past efforts to drain wetlands north of Kimberly Run. Portions of ditches crossing the bog and shrub swamp have deteriorated and do not appear to have running water. However, ditches in more forested areas have standing water pools in summer and running water in spring. The ditch that runs most heavily, with a half-meter of fast water for several weeks each spring, is the easternmost ditch on the boundary between the preserve and DOT. This ditch receives water from the Louie-Beach wetland mitigation project and delivers this water to Kimberly Run, bypassing preserve wetlands.
