Zone Name:	Hook	Current Status:	(Red)
Allocation Limit:	2.49 million m3/yr	Valid date:	23 June 2007
Approach:	50% of land-based recharge, 7DMALF (7 day mean annual low flow) deducted from rainfall recharge

Recharge component

Method of estimation

Background notes

The Hook zone has groundwater abstracted from a shallow aquifer associated with the Hook River and rainfall recharge sources, and a series of low yielding deeper aquifers in the Waimate depression. The predominant recharge source for the shallow downlands and deeper aquifers will be rainfall recharge.

Thorley and Ettema have provided the latest assessment of the groundwater allocations limits for this area, including assessment of the nature of the recharge over loess strata. This has led to an adjustment of the boundary and a revised allocation limit for this zone. This has been incorporated via proposed NRRP Variation 4. New applications to take groundwater that is linked to a surface waterway may be subject to surface water restrictions and/or allocation.

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 3.83 MB), U04/101
• Aitchison-Earl P. L, 2003, 'Pareora-Waihao water use patterns" report on data collected in 2000-2002' Environment Canterbury Unpublished Technical Report U03/84.
• Brown L. J, 2000, 'Groundwaters of the Canterbury Region' Environment Canterbury Report R00/10.
• de Joux R.T, 1995 'A Summary of Groundwater Related Issues within the Waihao River - Lake Wainono Catchment', CRC report U95/30 July 1995.
• Henshaw J, Mullen M and Ettema M, 2003, 'Aquifer test on well J40/0049, Studholme' Environment Canterbury Unpublished Technical Report U03/36
• Waugh J,1980, 'Draft Water Resources Investigation: Pareora, Otaio, Makikihi, Hook, Waihao, Waimate' South Canterbury Catchment Board
• Aitchison-Earl P, Ettema M, Horrell G, McKerchar A, and Smith E, 'Pareora Waihao Water Resource Summary' (pdf 6.19 MB), draft R06/20, August 2005.
• Thorley, M., Ettema, M. Review of water allocation limits for the South Canterbury downlands. Report U07/09. April 2007.

Allocation history

Effective allocation

 6 July 2009

Effective Allocation (million m³): 2.87
Reason for Change: Consents update
Source: Consents database Live-read
Proportion Allocated: 115%

 3 September 2007

Effective Allocation (million m³): 3.03
Reason for Change: Consents update
Source: Consents database Live-read
Proportion Allocated: 122%

 23 June 2007

Effective Allocation (million m³): 2.49
Reason for Change: Consents update
Source: Consents database Live-read
Proportion Allocated: 122%

Allocation limit

Allocation Limit (million m³): 2.49
Reason for Change:  This zone was created as part of proposed NRRP Variation 4
Source: Variation 4 Proposed Natural Resources Pregional Plan Chapter 5: Water Quantity