Why Not Aggregation DOIW
A stock watering dam located in the upper catchment of Deception Creek on Why Not pastoral lease about 26 kilometres north-east of Mount Coolon.
The site is a good example of a dam that provides significant services above those for which it was constructed. It is situated in an area where surface water is uncommon and must be of considerable local and possibly regional importance as a drought refuge. The dam has a deep (greater than 2 metres) central area. Very steeply sloping shores discourage cattle from entering the dam. This keeps turbidity low and reduces disturbance to the dense and diverse beds of aquatic plants that dominate the dam. The majority of these plants are favoured as food sources by waterbirds. Two pairs of cotton pygmy geese Nettapus coromandelensis (Sr) were observed on the dam. A blue billed duck Oxyura australis was also observed. This would be a vagrant, considerably north of its main range.
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