World's Large Aquifer Systems

Quantifying renewable groundwater stress with GRACE

Table 1. Study Aquifers With the Aquifer Identification Number

Aquifer ID	Aquifer Name
1	Nubian Aquifer System (NAS)
2	Northwestern Sahara Aquifer System (NWSAS)
3	Murzuk‐Djado Basin
4	Taoudeni‐Tanezrouft Basin
5	Senegalo‐Mauritanian Basin
6	Iullemeden‐Irhazer Aquifer System
7	Lake Chad Basin
8	Sudd Basin (Umm Ruwaba Aquifer)
9	Ogaden‐Juba Basin
10	Congo Basin
11	Upper Kalahari‐Cuvelai‐Upper Zambezi Basin
12	Lower Kalahari‐Stampriet Basin
13	Karoo Basin
14	Northern Great Plains Aquifer
15	Cambro‐Ordovician Aquifer System
16	Californian Central Valley Aquifer System
17	Ogallala Aquifer (High Plains)
18	Atlantic and Gulf Coastal Plains Aquifer
19	Amazon Basin
20	Maranhao Basin
21	Guarani Aquifer System
22	Arabian Aquifer System
23	Indus Basin
24	Ganges‐Brahmaputra Basin
25	West Siberian Basin
26	Tunguss Basin
27	Angara‐Lena Basin
28	Yakut Basin
29	North China Aquifer System
30	Song‐Liao Basin
31	Tarim Basin
32	Paris Basin
33	Russian Platform Basins
34	North Caucasus Basin
35	Pechora Basin
36	Great Artesian Basin
37	Canning Basin