Division 10Drainage management

## Division 10 Drainage management Division 10 Drainage management | Five year target | Why is it needed? | What are the expected outcomes? | | Target 30 Coastal floodplain areas with high water quality risk (eg acid drainage and/or oxygen depletion) addressed by:Target 30a Areas of drained natural wetlands identified and mappedTarget 30b 7 pilot remediation projects completedTarget 30c Future program of land rehabilitation developed and commencedTarget 30d No increase in acid drainage resulting from any new development in a mapped acid sulfate soil hotspot. | • To reduce acid drainage problems• To restore wetting and drying cycles in coastal wetlands (RFO 4) | • Primary ecological production maintained or improved• Degraded wetlands improved and significant wetlands protected and restored• Diversity and abundance of native aquatic animals and plants protected and restored• The productive capacity of land and water maintained | | Target 31 The peak volumes of urban stormwater runoff reaching natural watercourses reduced | • To improve water quality• To reduce the incidence of blue green algal blooms• To increase low flows• To reduce downstream storm events and storm pulses and associated erosion | • Primary ecological production maintained or improved• Diversity and abundance of native aquatic animals and plants protected and restored• Incidents of problem blue green algal blooms affecting essential water supplies and recreational values reduced• Assured water supplies to maintain or improve the health and wellbeing of rural and urban communities | | Target 32 The adoption of water efficient and sensitive urban design measures in urban areas/rivers increased | • To improve water quality• To reduce the incidence of blue green algal blooms• To increase low flows• To reduce downstream storm runoff and associated erosion | • Primary ecological production maintained or improved• Diversity and abundance of native aquatic animals and plants protected and restored• Incidents of problem blue green algal blooms affecting essential water supplies and recreational values reduced• Assured water supplies to maintain or improve the health and wellbeing of rural and urban communities | | Target 33 Zones of high irrigation salinity risk mapped, and irrigation accession rates assessed to enable action to be taken to stabilise or reduce accession rates within these zones | • To reduce the loss of productive land• To maintain crop yields• To reduce land salinisation• To reduce salt load to rivers | • Assured water supplies to maintain or improve the health and wellbeing of rural and urban communities• The productive capacity of land and water maintained | | Target 34 Major irrigation drains to natural watercourses carrying saline discharges identified, and priority drains monitored to enable action to be taken to ensure no net increase in the load or concentration of the saline drainage (unless agreed to in an applicable management program with approved offset provisions) | • To minimise further increases in the discharge of salt from point sources | • Diversity and abundance of native aquatic animals and plants protected and restored• Assured water supplies to maintain or improve the health and wellbeing of rural and urban communities• The productive capacity of land and water maintained |