The Seaside Adjunct to Kejimkujik National Park contains six freshwater lakes. These systems are described in terms of their morphology, physics, chemistry and biology. The major emphasis has been placed on determining the morphological and chemical characteristics since these determine to a large extent the physical and biological characteristics.

All of the lakes within the Adjunct are dystrophic and are characterized by darkly stained waters containing high levels of dissolved organic acids, low pH, poor bufferiing capacity and low nutrient levels. The biomass and diversity of organisms contained in these systems is low.