Table 18. Threats to wetland hydrological regime, the actions that can be undertaken to score gain and the relevant management activities that can be selected for the management plan. Threat Gain action Management activity River regulation Restore natural Provide environmental water water regime Change operation of existing regulator Install regulator Activities that change the local Restore surface flow Remove any impediments to delivery of surface drainage patterns patterns water drained from surrounding landscape Artificially manipulated water Improve Change operation of wetland hydrology to inflow or drawdown (not management restore natural water regime associated with maintaining or arrangements restoring the reference condition of the wetland) Obstruction, regulation or Restore connection Remove inflow obstructions alteration of the connection between wetland Remove by-pass inflow obstructions between the wetland and its and water source Change operation of existing regulator water source Remove existing regulator Lower inflow threshold Obstruction or regulation of Restore outlet flow Removing obstructions at outlet natural water outlets path Change operation of existing outlet regulator Remove existing outlet regulator Drainage of water from the Cease drainage of Restore natural outlet level wetland through a pipe or water Remove or block outlet pipe channel Block outlet channel Install regulator on outlet channel Change operation of existing outlet channel regulator Disposal of waste or drainage Stop disposal of Cease production of waste water water into the wetland (not water to wetland Reduce volume of waste water (note new associated with maintaining or waste water volume, ML) restoring the reference Divert water before it reaches wetland condition of the wetland) Extraction of water directly Stop water N/A from the wetland extraction Activities that permanently Lower maximum Remove internal levees or other internal raise the water level (e.g. water level barriers damming the wetland or Install connecting pipe through levee or constructing levees to restrict internal wetland barrier the spread of water) Remove or lower dam wall or sill or install outlet within dam wall
Table 18. Threats to wetland hydrological regime, the actions that can be undertaken to score gain and the relevant management activities that can be selected for the management plan. Threat Gain action Management activity River regulation Restore natural water regime Provide environmental water Change operation of existing regulator Install regulator Activities that change the local surface drainage patterns Restore surface flow patterns Remove any impediments to delivery of water drained from surrounding landscape Artificially manipulated water inflow or drawdown (not associated with maintaining or restoring the reference condition of the wetland) Improve management arrangements Change operation of wetland hydrology to restore natural water regime Obstruction, regulation or alteration of the connection between the wetland and its water source Restore connection between wetland and water source Remove inflow obstructions Remove by-pass inflow obstructions Change operation of existing regulator Remove existing regulator Lower inflow threshold Obstruction or regulation of natural water outlets Restore outlet flow path Removing obstructions at outlet Change operation of existing outlet regulator Remove existing outlet regulator Drainage of water from the wetland through a pipe or channel Cease drainage of water Restore natural outlet level Remove or block outlet pipe Block outlet channel Install regulator on outlet channel Change operation of existing outlet channel regulator Disposal of waste or drainage water into the wetland (not associated with maintaining or restoring the reference condition of the wetland) Stop disposal of water to wetland Cease production of waste water Reduce volume of waste water (note new waste water volume, ML) Divert water before it reaches wetland Extraction of water directly from the wetland Stop water extraction N/A Activities that permanently raise the water level (e.g. damming the wetland or constructing levees to restrict the spread of water) Lower maximum water level Remove internal levees or other internal barriers Install connecting pipe through levee or internal wetland barrier Remove or lower dam wall or sill or install outlet within dam wall
Wetland-Tender-Field-Officer-Manual.docx