Zone Name:	Kowai	Status:	(White)
Allocation Limit:	17.4 million m3/yr	Valid date:	24th November2004
Order of Approach:	Second (50% of land-based recharge)

Recharge component

Method of estimation

Background notes

Additional input from rivers and streams have not been estimated but is likely to be mainly restricted to shallow aquifers connected to the rivers. Development of the groundwater resources of the inland downlands is limited by the generally low yield available from relatively impermeable gravels. Well yields improve towards the coast and the potential for saltwater intrusion needs to be considered.

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
• Brown, L. J. 2001: Groundwaters of the Canterbury Region. Environment Canterbury Technical Report R00/10

Allocation history

Effective allocation

 3 May 2010

Effective Allocation (million m³): 5.55
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32%

 11 January 2010

Effective Allocation (million m³): 5.48
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32%

13 October 2008

Effective Allocation (million m³): 5.49
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32%

7 July 2008

Effective Allocation (million m³): 5.35
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 31%

23 July 2007

Effective Allocation (million m³): 5.62
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32.2%

7 May 2007

Effective Allocation (million m³): 5.60
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32.2%

19 February 2007

Effective Allocation (million m³): 5.88
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 37.79%

5 December 2006

Effective Allocation (million m³): 5.60
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32.2%

18 September 2006

Effective Allocation (million m³): 5.55
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 32%

29 June 2005

Effective Allocation (million m³): 5.55
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: 32.00%

24 November 2004

Effective Allocation (million m³): 7.3
Reason for Change: No change
Source: n/a
Proportion Allocated: 41.95%
Proportion Allocated changed due to Allocation Limit change

23 January 2004

Effective Allocation (million m³): 7.3
Reason for Change: This is the first estimate made
Source: Report U04/02 (Table 6.2)
Proportion Allocated: 26.64%

Allocation limit

24 November 2004

Allocation Limit (million m³): 17.4
Reason for Change: Implementation of 2nd Order Approach as approved by the Directorate
Source: Report U04/97

23 January 2004

Allocation Limit (million m³): 27.4
Reason for Change: This is the first estimate made using the 1st Order Approach
Source: 1st order Report U04/02 (Table 6.2)