provide water purification through the retention of nutrients, pathogenic
organisms, sediments and pollutants. The Wingecarribee Swamp provided
this service for the Wingecarribee Reservoir.
Wingecarribee Reservoir, which is fed through the Wingecarribee
Swamp is part of the Shoalhaven Scheme. The Shoalhaven scheme is
part of the regional water supply. The Wingecarribee Reservoir supplies
water for up to 40,000 people in Bowral, Robertson and Wollongong
as well as supplying Sydney in times of water shortage.
on the map to see more detail of the Shoalhaven scheme.
to the Australian Water Technologies (AWT):
study of northern hemisphere literature shows that peat has a capacity
to retain metals such as iron, inorganic compounds such as the plant
nutrients phosphorus and nitrogen, and organic material.
shallow and receives most of its inflow from agricultural areas
on fertile soils based on the Robertson volcanic rocks. This makes
the lake particularly susceptible to eutrophication due to the gradual
accumulation of plant nutrients. Blooms of potentially toxic blue-green
algae already occur there.
Reservoir in background
with mining dredge pool in foreground
of the Wingecarribee swamp acts as a sink for phosphorus, a major
nutrient implicated in the development of algal blooms. The swamp
also appears to be an effective trap for suspended matter and bacteria
carried by the inflows, particularly during smaller flood events.
Consulting Services, Report on Water Quality Issues in relation
to Peat Mining in Wingecarribee Swamp, Report No. 97/36, February
1997, Exhibit 35, pp. 7, 13-14