What is Salinity?
Salinity is the accumulation of salt in the upper layer of soil that had been brought to the surface by a rising watertable. A watertable is the upper surface of groundwater below which layers of rock, sand and gravel are saturated with water.
What is Urban Salinity?
Urban salinity is simply when we see salinity occurring in an urban environment. Urban recharge is often a consequence of urbanisation. Sources of water include irrigation from gardens, increased runoff from paved surfaces and leaking underground pipes.
Wagga Wagga and Urban Salinity?
Urban salinity is recognised as one of Wagga Wagga's most significant land degradation concerns. Annually Wagga Wagga City Council works with the community to adopt management practices to reduce salinity in the urban environment.
Salinity within the urban environment impacts on all members of the community quickly damaging infrastructure and impacting on the surrounding natural environment.
The urban salinity education program increases community awareness of the causes, problems and mangement of urban salinity through programs in the community and schools. The Urban Salinity Guide is aimed at residents and students wishing to learn more about the local salinity issue. This Guide pinpoints key areas of Wagga Wagga where the impacts of salinity are evident and where management strategies have been implemented
A revegetation program was established to increase the area of perennial native vegetation in Wagga Wagga and to promote the establishment of salt tolerant and water wise plants in areas affected by urban salinity. Recently around 40ha of land has been revegetated for salinity management.
The establishment of a rear block drainage replacement system, an evaporation basin and the dewatering bores are examples of major capital works programs utilised by council to control urban salinity.
The status of urban salinity is monitored through an extensive piezometer network and reported on annually.