 The park consists of two halves of roughly equal size—Point Isabel and North Point Isabel—separated by the narrow Hoffman Channel.Hoffman Channel is the outlet of Fluvius Innominatus creek from its mouth at the edge of its delta, Hoffman Marsh The shoreline of the entire park is lined with boulders, broken concrete blocks, and other riprap.The northern shore of the park against Hoffman Channel was formerly a sandy beach and has been modified from its original state by leveling and in-filling of the surrounding mudflats, tidal flats and other wetlands.