Zone Name:	Loburn	Status:	(White)
Allocation Limit:	40.8 million m3/yr	Valid date:	24th November2004
Order of Approach:	Second (50% of land-based recharge)

Recharge component

Method of estimation

Background notes

Most groundwater in the Loburn zone is sourced from shallow aquifers and only 2% is allocated based on rainfall recharge. Development of the groundwater resources is limited by the generally low yields available from relatively impermeable gravels. Additional input from rivers and streams has not been estimated but is likely to be mainly restricted to shallow aquifers connected to the rivers.

Other available information sources

These reports may be used to provide a full description of groundwater resources in this area. They may include information that will be of use in a consent application, but are not necessarily a comprehensive list.

• Aitchison-Earl, P., Davey, G., Ettema, M., McKerchar, A., Scott, D., Smith, E., and Weeber, J. 'State of the Canterbury Region Water Resource October 2004' (pdf 3.83MB), U04/101
• Bowden, M.J., et al. 1982: The Water Resources of the Ashley Catchment. North Canterbury Catchment and Regional Water Board, Christchurch, New Zealand. 176p.
• Brown, L. J, 2000, 'Groundwaters of the Canterbury Region' Environment Canterbury Report R00/10.
• McPherson, R. I., 1991: Geomorphic Setting of the Lower Ashley - Okuku Catchment Area. A Report to the Canterbury Regional Council With Recommendations for the Ashley River Floodplain Management Plan. November 1991.

Allocation history

Effective allocation

18 September 2006

Effective Allocation (million m³): 0.78
Reason for Change: No change
Source: Consents database live-read
Proportion Allocated: 2%

29 June 2005

Effective Allocation (million m³): 0.78
Reason for Change: Effective allocation recalculated using a revised table of irrigation standards to address concerns with Schedule WQN9 of Chapter 5 NRRP, as approved by the Water Allocation Panel
Source: Consents database live-read on 29 June 2005
Proportion Allocated: 2.00%

24 November 2004

Effective Allocation (million m³): 0.6
Reason for Change: No change
Source: n/a
Proportion Allocated: 1.47%
Proportion Allocated changed due to Allocation Limit change

23 January 2004

Effective Allocation (million m³): 0.6
Reason for Change: This is the first estimate made using the 1st Order Approach
Source: Report U04/02 (Table 6.2)
Proportion Allocated: 1.80%

Allocation limit

24 November 2004

Allocation Limit (million m³): 40.8
Reason for Change: Implementation of 2nd Order Approach as approved by Directorate
Source: Report U04/97

23 January 2004

Allocation Limit (million m³): 33.3
Reason for Change: This is the first estimate made using the 1st Order Approach
Source: Report U04/02 (Table 6.2)