Definition and calculation of freshwater quantity over-allocation / prepared for Ministry for the Environment by D.J. Booker.
Contributor(s): National Institute of Water and Atmospheric Research (N.Z.) | New Zealand. Ministry for the Environment.Material type: BookSeries: NIWA client report ; 2017017CH.Publisher: [Wellington, N.Z. : Ministry for the Environment, 2018]Description: 1 online resource.Subject(s): FRESH WATER | NEW ZEALAND | GOVERNMENT POLICIES | WATER RESOURCES | WATER MANAGEMENT | WATER RIGHTS | IRRIGATION WATER | WATER ABSTRACTION | RESOURCE CONSENTS | CATCHMENTSHoldings: ELECTRONIC Online resources: Ministry for the Environment website | Definition and calculation of freshwater quantity over-allocation NIWA document server
|Item type||Current location||Call number||Copy number||Status||Date due||Barcode|
|WELLINGTON ONLINE||ELECTRONIC||1||Not for loan||391386|
Publication date: March 2018. Publication reference number: CR 305
NIWA CLIENT REPORT No: 2017017CH
NIWA Project: MFE17xxx
Executive summary -- 1 Background -- 2 Definition of water resource use limits, over-allocation and headroom -- 3 Are the limits protective of freshwater objectives? -- 4 Complicating issues for quantifying over-allocation -- 4.1 Spatial issues -- 4.2 Free format to consents -- 4.3 Consented allocation, restricted allocation, recorded take and actual take -- 4.4 Temporal issues -- 4.5 Efficient irrigation -- 4.6 Permitted and consented activities -- 4.7 Historical legacies -- 4.8 Stream flow depletion from groundwater abstraction -- 4.9 Non-consumptive takes and discharges -- 5 Options for expressing allocation -- 5.1 Expression of limits at control points -- 5.2 Expression of allocation within catchments -- 5.3 Expression of allocation between catchments -- 6 Conclusion -- 7 Acknowledgements -- 8 References
This working paper produced by NIWA for the Ministry for the Environment in 2016 proposes a methodology for calculating over-allocation of fresh water.
The National Policy Statement for Freshwater Management (as amended 2017) requires limits for water quantity to be set in regional plans to manage the cumulative impacts of abstraction. Defining abstraction limits is important for establishing a level of environmental protection and clarifying availability of the water resource to users.
Comparing the limits against actual water use from active consents and permitted activities characterises the status of water allocation (under or over-allocated). This is important because the NPS provides direction to councils to avoid over-allocation. However, there are considerable and practical difficulties in defining water resource use limits and subsequently calculating over-allocation. This working paper may help councils to undertake this task.