Appendix 13: Allocation and Estimated Economic Value of Groundwater for Domestic Use - The 100 Aquifers of Largest Value

New Zealand Water Bodies of National Importance for Domestic Use and Industrial Use

P A White, B M H Sharp and R R Reeves, Institute of Geological & Nuclear Sciences

[ Last Updated 17 January 2006 ]

Rank	GNS aquifer name	Council	Allocation m³/week	Domestic water Economic value $million/yr
1	Christchurch-West Melton	CRC	3374255	60
2	Heretaunga Plains	HBRC	1100792	20
3	Hutt	WRC	963011	17
4	Ashley Downs	CRC	493311	9
5	Central Plains	CRC	418127	8
6	Auckland volcanics	ARC	422921	7
7	Rangitata-Levels plains	CRC	342138	7
8	Central Otago	ORC	343769	6
9	Manawatu	HMW	342377	6
10	Lower Taieri Plain - East and West	ORC	300923	6
11	Upper Wairau Valley	MDC	280784	5
12	Mamaku Plateau	EBOP	260624	5
13	Rakaia-Ashburton plains	CRC	249901	4
14	Coromandel volcanic	EW	228543	4
15	Wanganui	HMW	186039	3
16	Upper Confined	TDC	185803	3
17	Whakamuru Ignimbrites	EW	169134	3
18	Rangitaiki Plains (assumes shallow system)	EBOP	129682	3
19	Raumati-Paekakariki	WRC	121390	2
20	Coastal aquifers	SRC	114171	2
21	Ruataniwha Plains	HBRC	110894	2
22	Wairarapa	WRC	75980	2
23	Waitaki Groundwater	CRC	94912	1
24	Matahina Ignimbrite	EBOP	91798	1
25	Ashburton-Rangitata plains	CRC	88508	1
26	Kai iwi Stream	HMW	80640	1
27	Tauranga Group sediments	EW	74354	1
28	South Canterbury	CRC	62997	1
29	Waiau groundwater	SRC	60200	1
30	South Auckland volcanics	ARC	50946	1
31	Takaka Valley Gravel	TDC	49709	1
32	Taupo sand	EW	48923	1
33	Tauranga Group sediments	ARC	47099	1
34	Waiteariki Ignimbrite	EBOP	45970	1
35	Kaituna Valley	MDC	34720	1
36	Tuamarino Valley	MDC	31822	1
37	Galatea Basin	EBOP	28728	1
38	Waitemata Formation	ARC	36851	0
39	Opotiki	EBOP	31962	0
40	Parnassus Basin	CRC	25096	0
41	NULLaquifer	ORC	23742	0
42	Greywacke	ARC	22842	0
43	Lower Waikato Groundwater	EW	19600	0
44	Waiotapu Ignimbrite	EW	19600	0
45	Mowhanau Stream	HMW	18144	0
46	Whenuakura Formation	TRC	17437	0
47	Coastal	HMW	16142	0
48	Groundwater Central Coast	CRC	13860	0
49	Hinuera Formation	EW	12516	0
50	Otorohanga and Orahiri limestone	EW	10717	0
51	East Coastal groundwater	NRC	10561	0
52	Kaikohe	NRC	10465	0
53	Esk Valley	HBRC	9658	0
54	Whataroa River	WCRC	9072	0
55	South Auckland volcanics	EW	8358	0
56	Buller River Terraces	TDC	8000	0
57	Hurunui Groundwater	CRC	7861	0
58	Aparima groundwater	SRC	7392	0
59	Kaikoura Plain	CRC	6374	0
60	Motueka River Terraces	TDC	6300	0
61	Ruawai	NRC	5670	0
62	Sandstone	ARC	5054	0
63	Upper Tarawera GW	EBOP	3675	0
64	Wairau River	MDC	3360	0
65	Porangahau River	HBRC	3085	0
66	Clarence Groundwater	CRC	3024	0
67	Ngawha	NRC	2856	0
68	Banks Peninsula	CRC	2415	0
69	Hamilton Basin Groundwater	EW	2338	0
70	Rotorua GW	EBOP	2226	0
71	Mahia sand	HBRC	2185	0
72	Haast River	WCRC	2177	0
73	Lower Waitaki Alluvium	CRC	2142	0
74	Not Defined	ARC	2122	0
75	Flaxbourne River	MDC	1904	0
76	Lower Waihopai Aquifer	MDC	1575	0
77	Little Groper Creek	WCRC	1512	0
78	Auckland coastal aquifers	ARC	1407	0
79	Whakatane GW	EBOP	1400	0
80	Waiotama/nepu gw	NRC	1361	0
81	Kakanui-Kauru Alluvium	ORC	1267	0
82	Aupouri	NRC	1239	0
83	Takaka Limestone	TDC	1183	0
84	Small West Coast	EW	1169	0
85	Waipatiki Stream	HBRC	1085	0
86	Manapouri groundwater	SRC	1050	0
87	west coastal groundwater	NRC	1022	0
88	Waihi Beach Rhyolite	EBOP	987	0
89	Tara	NRC	952	0
90	Rangitikei	HMW	910	0
91	Tarawera GW	EBOP	763	0
92	Benmorven	MDC	749	0
93	North Cape groundwater	NRC	700	0
94	Waitemata Formation	NRC	623	0
95	Nuhaka coastal	HBRC	605	0
96	Pacific Ocean	HBRC	605	0
97	Matemateaonga Formation	TRC	560	0
98	Other	MDC	557	0
99	Coastal	WRC	544	0
100	Arthur Marble	TDC	371	0

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Printed: 26/11/2009