Zone Name:	Hanmer Basin	Status:	(White)
Allocation Limit:	16 million m3/yr	Valid date:	23rd January 2004
Order of Approach:	First (15% of average annual rainfall)

Recharge component

Method of estimation

Background notes

Groundwater is recharged from rainfall infiltration and losses from the Chatterton and Percival rivers/tributaries that cross the Hanmer Basin. River losses of about 60 l/s have been measured in the Chatterton River near Hanmer Springs (Leech, 1988) and are not included in the proposed allocation limit. Although groundwater use is very small compared to the allocation limit, stream depletion impacts would need to be considered where groundwater is abstracted from shallow gravel 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
• Brown, L. J. 2001: Groundwaters of the Canterbury Region. Environment Canterbury Technical Report R00/10.
• Leech, S. 1988: Engineering Geology and Hydrogeology of Hanmer Springs, North Canterbury. MSc Thesis University of Canterbury.

Allocation history

Effective allocation

 3 November 2009

Effective Allocation (million m³): 2.61
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 16%

23 July 2007

Effective Allocation (million m³): 2.41
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 15%

7 May 2007

Effective Allocation (million m³): 2.66
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 17%

18 September 2006

Effective Allocation (million m³): 1.95
Reason for Change: Consents update
Source: Consents database live-read
Proportion Allocated: 12%

23 January 2004

Effective Allocation (million m³): 0.4
Reason for Change: This is the first estimate made
Source: Report U04/02 (Table 6.2)
Proportion Allocated: 2.50%

Allocation limit

23 January 2004

Allocation Limit (million m³): 16
Reason for Change: This is the first estimate made using the 1st Order Approch
Source: Report U04/02 (Table 6.2)