Submissions have now closed on the Draft Water Sharing Plan for the Sydney Catchment Authority area. Under the Water Management Act 2000, the NSW Office of Water can prepare a range of statutory water management plans covering aspects such as water sharing, water use, drainage management and floodplain management. To date the focus has been on developing water sharing plans in order to protect water for the environment while also securing the rights of water users, such as towns, farmers, industry and irrigators.
The Natural Sequence Association (NSA) has laid out its concerns in a submission. Martin Royds Chair of the NSA governing body says it is worrying that the draft proposes taking power from the Minister to approve any works in minor waterways.
The submission says, "We are concerned with Part 13 Section 78 sub-clause (1) of the unregulated river water sources Draft Water Sharing Plan. This sub-clause "prohibits the construction of new in-river dams requiring approval, except for approvals sought by either a local water utility or a major utility for the purpose of town water supply,... an in-river dam is defined as a dam on a 3rd, 4th or higher order river."
Mr Royds continued that "Natural system management practices, such as natural sequence farming, replicate Australia's natural hydrological processes to reinstate the 'chain of ponds' system that once dominated our landscape. Unsuitable land management practices applied post-European settlement, including alluvial gold mining, has left us with the current degraded 'drainage' system. A fundamental constituent of natural sequence management is the construction of in-river structures (dams, berms, weirs, fascines etc.) to re-establish the 'chain of ponds' system. In-river structures are used to create vegetated ponds, which laterally rehydrate the landscape, repair incisions, cleanse water, reconnect water with floodplains, capture valuable nutrients, sustain biodiversity, prevent salinity outbreaks, sequester carbon, and minimise flood damage. The complete prohibition of the construction of in-river structures, however, renders natural sequence management inoperative, despite its clear economic and environmental value to the greater metropolitan region."
"Natural sequence techniques have been applied to other streams within the region, such as Mulloon Creek, and, through the construction of in-river structures, have successfully rehabilitated degraded landscapes."
Among the questions posed in the submission was "Does the Office of Water hold the view that a landscape with an incised, degraded channel has a greater water storage capacity than a pristine or rehabilitated channel system?"
More see: http://www.water.nsw.gov.au/Water -management/Water-sharing/Water-s haring/default.aspx