Lake Hiawatha and Minnie Waters are two of the least disturbed coastal dune lakes in New South Wales, and are important and characteristic representations of coastal dune contact freshwater lakes.
Lakes Hiawatha and Minnie Waters are dune contact Freshwater Lakes. The lakes are located in depressions in the underlying bedrock of New England metasediments, which have been blocked by coastal dunes. The two lakes are only 500m apart and at times of exceptional flooding become joined and flow into the Wooli River. Lake Hiawatha is clear and sandy, while minnie waters has a high organic content and is turbid. A sedge LEPIRONIA ARTICULATA is the major emergent shoreline plant of both lakes. The bottom of Minnie Waters is covered by a dense mat of aquatic plants such as Chara Tibrosa and UTRICULARIA FLEXUOSA. A variety of waterbeetles are common in both lakes. The dominant zooplankton are CALAMOECIA TASMANICA, MESOCYCLOPS LEUCKARTI and BOSMINA MERIDIONALIS. Twelve species of fish have been recorded in the two lakes, with fire tail gudgeon (HYPSELEUTRIS GALII) and the introduced mosquito fish (GAMBUSIA AFFINIS). The lakes are the source of the local water supply. http://www.aussiheritage.com.au/
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