PlaceDossier / BC places / Aquifers / Rankings

Highly vulnerable aquifers with the most wells

Aquifers the province rates highly vulnerable to contamination from the surface, by wells on record. 349 aquifers ranked.

  1. 1Aquifer 606: Sooke-Metchosin1,550 538 km², demand low
  2. 2Aquifer 162: Cedar, Yellow Point, N. Oyster (Ladysmith)1,237 84 km², demand moderate
  3. 3Aquifer 721: North Salt Spring Island1,051 49 km², demand not rated
  4. 4Aquifer 709: Gabriola; excluding northern portion1,047 47 km², demand moderate
  5. 5Aquifer 15: Abbotsford Shallow834 66 km², demand high
  6. 6Aquifer 61: Newton Upland823 146 km², demand low
  7. 7Aquifer 41: Brookswood778 33 km², demand high
  8. 8Aquifer 259: Similkameen River Aquifer593 121 km², demand moderate
  9. 9Aquifer 35: Hopington AB570 24 km², demand high
  10. 10Aquifer 1144: Hopington C523 18 km², demand high
  11. 11Aquifer 722: North-Central Salt Spring Island488 36 km², demand not rated
  12. 12Aquifer 1147: South-Central Salt Spring Island480 49 km², demand not rated
  13. 13Aquifer 92: Lower Nechako River423 94 km², demand high
  14. 14Aquifer 488: East Creston Bedrock386 650 km², demand low
  15. 15Aquifer 255: North of Tug Lake to Vaseux Lake381 14 km², demand high
  16. 16Aquifer 6: Chilliwack-Rosedale360 209 km², demand not rated
  17. 17Aquifer 513: North Castlegar Bedrock337 513 km², demand low
  18. 18Aquifer 467: Mission Creek Aquifer335 42 km², demand moderate
  19. 19Aquifer 97: Salmon River - Upper Aquifer322 37 km², demand moderate
  20. 20Aquifer 711: North Pender; northern area263 11 km², demand moderate
  21. 21Aquifer 706: Gabriola; Northern area257 5.9 km², demand high
  22. 22Aquifer 193: Osoyoos West255 14 km², demand high
  23. 23Aquifer 206: Mill Bay240 16 km², demand not rated
  24. 24Aquifer 254: Osoyoos Lake to southwest of Tug Lake240 29 km², demand moderate
  25. 25Aquifer 723: South Salt Spring Island238 51 km², demand not rated
  26. 26Aquifer 681: Willis Point, SE side of Saanich Inlet230 7.9 km², demand high
  27. 27Aquifer 1297: Abbotsford Shallow West229 29 km², demand not rated
  28. 28Aquifer 316: Lumby - Upper Aquifer219 26 km², demand moderate
  29. 29Aquifer 511: Blewett Bedrock219 241 km², demand moderate
  30. 30Aquifer 108: Tuhok Unconfined Aquifer218 25 km², demand moderate
  31. 31Aquifer 158: Grand Forks217 39 km², demand high
  32. 32Aquifer 161: Cassidy214 31 km², demand moderate
  33. 33Aquifer 186: Lower Cowichan River A207 17 km², demand high
  34. 34Aquifer 94: Hart Highlands205 21 km², demand low
  35. 35Aquifer 289: Westwold204 34 km², demand moderate
  36. 36Aquifer 740: Denman Island202 48 km², demand moderate
  37. 37Aquifer 307: Eagle River178 46 km², demand moderate
  38. 38Aquifer 886: E of Hayward Lake, N of Hairsine Creek165 31 km², demand moderate
  39. 39Aquifer 496: Salmo River Overburden154 47 km², demand low
  40. 40Aquifer 524: Cranbrook145 22 km², demand moderate
  41. 41Aquifer 68: Belcarra144 1.8 km², demand high
  42. 42Aquifer 37: Fort Langley AC143 3.9 km², demand high
  43. 43Aquifer 8: Sardis-Vedder141 58 km², demand not rated
  44. 44Aquifer 382: Soda Cr. 26 km north of Williams Lake140 202 km², demand low
  45. 45Aquifer 493: Salmo River Bedrock137 809 km², demand moderate
  46. 46Aquifer 319: Trinity Valley134 12 km², demand moderate
  47. 47Aquifer 194: Osoyoos East129 5.3 km², demand moderate
  48. 48Aquifer 603: Invermere 3km N and S124 13 km², demand moderate
  49. 49Aquifer 712: North Pender; Port Browning123 6.3 km², demand moderate
  50. 50Aquifer 18: Mission122 48 km², demand low
  51. 51Aquifer 12: Nicomen Slough116 60 km², demand low
  52. 52Aquifer 486: Montrose Bedrock115 85 km², demand low
  53. 53Aquifer 735: Saturna Island - east115 1.4 km², demand high
  54. 54Aquifer 540: Wasa Lake114 11 km², demand moderate
  55. 55Aquifer 570: Terrace - SE; Jack Pine Flats114 33 km², demand moderate
  56. 56Aquifer 1280: West Creston111 587 km², demand not rated
  57. 57Aquifer 487: Creston-Kootenay River Overburden107 194 km², demand low
  58. 58Aquifer 229: Scotch Creek106 11 km², demand moderate
  59. 59Aquifer 269: Ellis Creek104 180 km², demand moderate
  60. 60Aquifer 558: Halfmoon Bay104 10 km², demand moderate
  61. 61Aquifer 444: Fort St. John Overburden Aquifer System103 179 km², demand low
  62. 62Aquifer 808: Anarchist Mountain102 19 km², demand moderate
  63. 63Aquifer 745: Bowen Island - North99 10 km², demand moderate
  64. 64Aquifer 4: Aggasiz97 63 km², demand low
  65. 65Aquifer 257: Meyers Flat97 8.6 km², demand moderate
  66. 66Aquifer 345: Oyama94 6.2 km², demand moderate
  67. 67Aquifer 1281: Trail/Warfield Bedrock90 286 km², demand not rated
  68. 68Aquifer 477: Kettle R., eastward from Rock Ck.89 5.8 km², demand moderate
  69. 69Aquifer 1: Floods; Harrison; Hope88 7.8 km², demand moderate
  70. 70Aquifer 659: Upper Bulkley Alluvial85 40 km², demand moderate
  71. 71Aquifer 521: Jaffray83 5.2 km², demand high
  72. 72Aquifer 968: De Courcy Island83 2 km², demand high
  73. 73Aquifer 1296: Aldergrove Shallow83 11 km², demand not rated
  74. 74Aquifer 412: Oyster River82 9.3 km², demand not rated
  75. 75Aquifer 478: Midway82 3.6 km², demand high
  76. 76Aquifer 834: Savary Island82 4.9 km², demand high
  77. 77Aquifer 963: Nanaimo River Road near Berkley Creek82 5.1 km², demand moderate
  78. 78Aquifer 1010: Tulameen75 94 ha, demand high
  79. 79Aquifer 528: Wardner74 8.1 km², demand high
  80. 80Aquifer 103: Hullcar Unconfined Aquifer73 22 km², demand low
  81. 81Aquifer 571: E. of Terrace - Thornhill; E. of River72 17 km², demand moderate
  82. 82Aquifer 1002: Rawlings Lake72 3.4 km², demand moderate
  83. 83Aquifer 482: Kettle river Valley near Beaverdell70 16 km², demand low
  84. 84Aquifer 520: Baynes Lake - East 270 4.3 km², demand moderate
  85. 85Aquifer 731: Thetis Island70 6.8 km², demand moderate
  86. 86Aquifer 500: South Castlegar Bedrock67 134 km², demand low
  87. 87Aquifer 593: Valley View - Dawson Creek Bedrock Aquifer67 886 km², demand low
  88. 88Aquifer 952: Tsolum River, North of Courtney66 19 km², demand not rated
  89. 89Aquifer 1108: Willowbrook and Oliver66 62 km², demand low
  90. 90Aquifer 353: Eagle Rock Aquifer64 7.7 km², demand high
  91. 91Aquifer 1279: Kitchener Creek Overburden64 42 km², demand not rated
  92. 92Aquifer 447: Georgina Pt - Hall Hill, Mayne Island N.63 3.7 km², demand moderate
  93. 93Aquifer 769: Clearwater – North of Kamloops58 9.6 km², demand moderate
  94. 94Aquifer 957: Shuttle Bay to the Malaspina Peninsula58 12 km², demand low
  95. 95Aquifer 117: Red Bluff south of Quesnel57 6.6 km², demand moderate
  96. 96Aquifer 172: Chemainus and Crofton57 7.5 km², demand high
  97. 97Aquifer 559: Sakinaw Lake; Mixel Lake57 14 km², demand moderate
  98. 98Aquifer 599: Sooke R floodplain, west to Kemp Lk57 19 km², demand low
  99. 99Aquifer 1028: Confluence of Hayes and Siwash Creeks57 7 km², demand moderate
  100. 100Aquifer 1159: Lower Cherryville57 24 km², demand moderate
  101. 101Aquifer 1235: West Langley57 11 km², demand not rated
  102. 102Aquifer 205: Shawnigan Lake56 13 km², demand not rated
  103. 103Aquifer 370: Area west of Quesnel56 6.7 km², demand moderate
  104. 104Aquifer 1284: Beaver Creek Overburden56 30 km², demand not rated
  105. 105Aquifer 173: Maple Mountain, Crofton - Maple Bay53 34 km², demand low
  106. 106Aquifer 729: South Thetis Island52 64 ha, demand high
  107. 107Aquifer 732: Thetis Island52 1.2 km², demand high
  108. 108Aquifer 302: Powers Ck Deltaic50 1.6 km², demand moderate
  109. 109Aquifer 238: Spotted Lake, Osoyoos47 7 km², demand moderate
  110. 110Aquifer 664: Little Qualicum River47 3.9 km², demand not rated
  111. 111Aquifer 1029: North of Princeton47 8.2 km², demand moderate
  112. 112Aquifer 240: Sinkut Mountain North Surficial46 91 km², demand low
  113. 113Aquifer 189: Honeymoon Bay & Mesachie Lake45 10 km², demand moderate
  114. 114Aquifer 191: North Lake Cowichan45 3.4 km², demand moderate
  115. 115Aquifer 1223: Sandspit - Haida Gwaii45 11 km², demand not rated
  116. 116Aquifer 177: East Duncan - Maple Bay43 7.7 km², demand low
  117. 117Aquifer 561: Kleindale43 4.2 km², demand moderate
  118. 118Aquifer 575: Terrace - South43 19 km², demand high
  119. 119Aquifer 1149: Ashton Creek Unconfined43 8.1 km², demand low
  120. 120Aquifer 1252: Between Englishman and River and Morrison Creek43 5.5 km², demand not rated
  121. 121Aquifer 9: Chilliwack River Shallow42 13 km², demand not rated
  122. 122Aquifer 176: East Duncan - Maple Bay42 16 km², demand low
  123. 123Aquifer 590: Groundbirch Buried Valley42 156 km², demand low
  124. 124Aquifer 663: Upper reaches of Whisky Creek42 18 km², demand low
  125. 125Aquifer 14: Hatzic Prairie41 10 km², demand low
  126. 126Aquifer 816: Canal Flats39 7.3 km², demand moderate
  127. 127Aquifer 417: Puntledge/ Cumberland38 37 km², demand not rated
  128. 128Aquifer 17: Mission Floodplain37 6.5 km², demand moderate
  129. 129Aquifer 484: Casino Overburden37 19 km², demand moderate
  130. 130Aquifer 889: N end of Hatzic Valley35 4.1 km², demand low
  131. 131Aquifer 361: East of Milburn Lake and nw of Quesnel32 5.7 km², demand moderate
  132. 132Aquifer 776: Egmont31 1.3 km², demand moderate
  133. 133Aquifer 1283: Brilliant Bedrock31 53 km², demand not rated
  134. 134Aquifer 76: Stumbles Creek30 13 km², demand moderate
  135. 135Aquifer 134: Cache Creek to north of Maiden Creek30 15 km², demand high
  136. 136Aquifer 221: Parksville30 9.6 km², demand moderate
  137. 137Aquifer 1128: Village of Nakusp30 8 km², demand low
  138. 138Aquifer 1182: Masset30 32 km², demand moderate
  139. 139Aquifer 1249: North side of Little Qualicum River30 4 km², demand not rated
  140. 140Aquifer 401: 22 km north along the Cheakamus River29 6.4 km², demand moderate
  141. 141Aquifer 991: Harrop, BC29 2.6 km², demand moderate
  142. 142Aquifer 1141: Kootenay and St. mary Rivers29 7.7 km², demand low
  143. 143Aquifer 1278: Nelson Overburden29 14 km², demand not rated
  144. 144Aquifer 265: Between OK Falls and Vaseux Lk28 5.4 km², demand low
  145. 145Aquifer 802: Revelstoke – South28 2.2 km², demand moderate
  146. 146Aquifer 1116: Rosebery28 83 ha, demand high
  147. 147Aquifer 121: Kersley27 1.4 km², demand low
  148. 148Aquifer 201: Heather Bank27 1.9 km², demand not rated
  149. 149Aquifer 234: Squilax27 19 km², demand low
  150. 150Aquifer 340: East of Vanderhoof/north of Prince George27 5 km², demand low
  151. 151Aquifer 566: East Sechelt Delta27 9.7 km², demand not rated
  152. 152Aquifer 920: Clinton Creek Lower Unconsolidated27 16 km², demand low
  153. 153Aquifer 1291: Pouce Creek Bedrock27 230 km², demand not rated
  154. 154Aquifer 230: Squilax / Tappen26 18 km², demand low
  155. 155Aquifer 993: Longbeach to Harrop Point, BC26 1.4 km², demand moderate
  156. 156Aquifer 1135: South of Kimberly26 1.2 km², demand high
  157. 157Aquifer 263: North of Okanagan Falls/ shore of Skaha Lk25 8.4 km², demand low
  158. 158Aquifer 1100: Whonnock Lake / Creek25 1.5 km², demand low
  159. 159Aquifer 887: E of Stave Falls, Steelhead Creek24 26 km², demand low
  160. 160Aquifer 333: Hixon23 23 km², demand low
  161. 161Aquifer 1248: French Creek delta23 2.2 km², demand not rated
  162. 162Aquifer 1282: Sunningdale/Glenmerry Bedrock23 118 km², demand not rated
  163. 163Aquifer 228: Celista22 2.9 km², demand moderate
  164. 164Aquifer 1157: Hullcar Perched22 30 km², demand low
  165. 165Aquifer 36: Fort Langley B21 1.3 km², demand moderate
  166. 166Aquifer 574: Gossan Creek; E. of Terrace21 4.7 km², demand moderate
  167. 167Aquifer 661: Spider Lk nr Horne Lk21 6.2 km², demand moderate
  168. 168Aquifer 538: St. Mary River IR20 11 km², demand low
  169. 169Aquifer 1247: Fort Fraser Alluvial20 61 km², demand low
  170. 170Aquifer 244: Vanderhoof Alluvial19 49 km², demand low
  171. 171Aquifer 354: O’Keefe Unconfined Aquifer19 24 km², demand low
  172. 172Aquifer 483: Trail Townsite Overburden19 27 km², demand moderate
  173. 173Aquifer 793: East shore of Lakelse Lake19 6.3 km², demand low
  174. 174Aquifer 409: Little River deltaic deposit18 1.3 km², demand low
  175. 175Aquifer 770: Clearwater – North of Kamloops18 2.6 km², demand high
  176. 176Aquifer 981: Bouchie Lake, Northwest of Quesnel18 2.8 km², demand moderate
  177. 177Aquifer 1034: Cridland Creek Bedrock18 258 km², demand low
  178. 178Aquifer 1240: Quadra Central Bedrock18 108 km², demand not rated
  179. 179Aquifer 1242: North Campbell River Bedrock18 127 km², demand not rated
  180. 180Aquifer 190: Youbou17 2.8 km², demand low
  181. 181Aquifer 492: Yahk17 1.4 km², demand moderate
  182. 182Aquifer 635: SW of Tumbler Ridge townsite17 87 ha, demand moderate
  183. 183Aquifer 832: S of Bella Coola R./ E of Bella Coola17 3.5 km², demand moderate
  184. 184Aquifer 1134: Wycliffe, North of St.Mary River17 3.6 km², demand moderate
  185. 185Aquifer 3: Laidlaw16 9.3 km², demand low
  186. 186Aquifer 74: Upper Merritt16 7 km², demand high
  187. 187Aquifer 516: Willow Point16 83 ha, demand moderate
  188. 188Aquifer 724: West of Merritt16 5.7 km², demand moderate
  189. 189Aquifer 826: Nivek16 71 ha, demand moderate
  190. 190Aquifer 904: Pt. Hardy16 95 ha, demand moderate
  191. 191Aquifer 975: Campbell River16 30 km², demand not rated
  192. 192Aquifer 168: Ladysmith15 6.7 km², demand low
  193. 193Aquifer 454: S. of Golden; across R. from Nicholson15 4 km², demand moderate
  194. 194Aquifer 491: Southern area of the Moyie R.15 3.3 km², demand moderate
  195. 195Aquifer 865: Heber R. and Gold R.15 29 ha, demand high
  196. 196Aquifer 994: Kokanee Point15 1.2 km², demand moderate
  197. 197Aquifer 1051: Salmon River Valley south of Sayward15 9.7 km², demand low
  198. 198Aquifer 1151: Swan Lake Unconfined15 7.9 km², demand low
  199. 199Aquifer 2: Chawathil14 7.1 km², demand low
  200. 200Aquifer 114: Mara Aquifer14 3.5 km², demand moderate
  201. 201Aquifer 159: Ucluelet, Lost Shoe14 16 km², demand not rated
  202. 202Aquifer 600: Horse Creek Fan S. of Nicholson14 2.4 km², demand moderate
  203. 203Aquifer 831: S of Bella Coola R./ E of Bella Coola14 1.1 km², demand moderate
  204. 204Aquifer 930: South Pine River at Nelson Creek14 17 km², demand low
  205. 205Aquifer 1006: Southeast of Devil Lake14 65 ha, demand high
  206. 206Aquifer 1081: West side of Kitimat River14 2.4 km², demand moderate
  207. 207Aquifer 11: Lake Erroch/Deroche Creek13 13 km², demand low
  208. 208Aquifer 262: White Lake Basin 35 km south of Penticton13 1.2 km², demand low
  209. 209Aquifer 407: Point Holmes, east of the Town of Comox.13 1.9 km², demand low
  210. 210Aquifer 654: Topley Bedrock13 87 km², demand low
  211. 211Aquifer 830: S of Bella Coola R./ E of Bella Coola13 2.8 km², demand moderate
  212. 212Aquifer 959: Hurtado Point13 7.1 km², demand low
  213. 213Aquifer 960: Lund, BC13 3.3 km², demand low
  214. 214Aquifer 1011: Coalmont, 5 km SE of Tulameen13 94 ha, demand moderate
  215. 215Aquifer 1047: 30 km southeast of Golden13 28 ha, demand moderate
  216. 216Aquifer 1125: Lemon Creek13 5.3 km², demand low
  217. 217Aquifer 42: South Fraser River Delta12 143 km², demand low
  218. 218Aquifer 66: Capilano River12 5.4 km², demand low
  219. 219Aquifer 87: Miller to Tabor12 12 km², demand low
  220. 220Aquifer 842: Cortes Island12 2.6 km², demand moderate
  221. 221Aquifer 967: Reid Island12 97 ha, demand high
  222. 222Aquifer 1276: Norns Creek Overburden12 13 km², demand not rated
  223. 223Aquifer 16: Mount Lehman11 5.8 km², demand low
  224. 224Aquifer 30: North of Dennison11 4.8 km², demand low
  225. 225Aquifer 39: East Pitt River11 84 km², demand low
  226. 226Aquifer 79: Unicola11 8.1 km², demand low
  227. 227Aquifer 321: Upper Gates River11 4.6 km², demand low
  228. 228Aquifer 414: Alluvial fan at the mouth of Rosewall Cr.11 1.5 km², demand high
  229. 229Aquifer 962: Ladysmith, BC11 60 ha, demand low
  230. 230Aquifer 5: Chehalis10 16 km², demand low
  231. 231Aquifer 284: Pulmill southwest of Kamloops10 2.2 km², demand moderate
  232. 232Aquifer 716: Spences Bridge10 36 ha, demand moderate
  233. 233Aquifer 815: North of Grand Forks10 3 km², demand moderate
  234. 234Aquifer 873: Edgewood10 3.9 km², demand moderate
  235. 235Aquifer 1012: Riddle Mountain, SE slope10 1.2 km², demand moderate
  236. 236Aquifer 1079: Eaast side of Kitimat River10 1.6 km², demand moderate
  237. 237Aquifer 1205: Vedder Crossing10 24 ha, demand not rated
  238. 238Aquifer 67: Seymour River/Lynn Creek9 5.2 km², demand low
  239. 239Aquifer 327: Prince George9 3.4 km², demand low
  240. 240Aquifer 431: Mackenzie9 1.5 km², demand moderate
  241. 241Aquifer 794: South of Lakelse Lake9 12 km², demand low
  242. 242Aquifer 965: Ruxton Island9 97 ha, demand high
  243. 243Aquifer 1218: East Cultus Columbia Bedrock9 31 km², demand not rated
  244. 244Aquifer 1239: the north end of Wood Lake and south end of Kalamalka Lake9 1.9 km², demand not rated
  245. 245Aquifer 1272: Blueberry Valley Aquifer System9 105 km², demand not rated
  246. 246Aquifer 179: Sahtlam8 7.6 km², demand low
  247. 247Aquifer 271: North Thompson River floodplain8 19 km², demand low
  248. 248Aquifer 282: Kamloops Airport8 23 km², demand low
  249. 249Aquifer 474: Kettle Valley - Rock Creek8 1.4 km², demand low
  250. 250Aquifer 522: Rosen Lake - South8 26 ha, demand moderate
  251. 251Aquifer 860: Mouth of Peachland Creek, SW of Peachland8 13 ha, demand high
  252. 252Aquifer 953: Pearson Island8 13 ha, demand high
  253. 253Aquifer 958: South of Okeover Arm Provincial Park8 3.2 km², demand low
  254. 254Aquifer 1106: East of Hatzic Prairie8 4.7 km², demand low
  255. 255Aquifer 1136: South of Kimberly8 2.2 km², demand low
  256. 256Aquifer 1148: Greenwood8 1 km², demand not rated
  257. 257Aquifer 1217: Vedder Mountain SE Bedrock8 22 km², demand not rated
  258. 258Aquifer 1243: Port McNeill East Unconsolidated8 4.7 km², demand not rated
  259. 259Aquifer 1262: Clinton Creek Upper Sand and Gravel8 29 km², demand not rated
  260. 260Aquifer 13: Norrish Creek7 2.3 km², demand moderate
  261. 261Aquifer 70: Coquitlam River7 25 km², demand low
  262. 262Aquifer 78: West End of Nicola Lake7 1.2 km², demand low
  263. 263Aquifer 309: South of Sicamous7 31 ha, demand moderate
  264. 264Aquifer 357: Whiteman Creek Fan7 2.2 km², demand low
  265. 265Aquifer 399: Squamish River Squamish to Brackendale7 12 km², demand low
  266. 266Aquifer 442: 3.5 km W. of Taylor7 1.9 km², demand moderate
  267. 267Aquifer 602: from Radium towards Columbia River7 1.2 km², demand moderate
  268. 268Aquifer 797: Kispiox Village7 1.2 km², demand moderate
  269. 269Aquifer 833: S of Bella Coola R. /E of Nusatsum R.7 2.2 km², demand low
  270. 270Aquifer 908: Halfway Valley Aquifer System7 67 km², demand low
  271. 271Aquifer 1123: Appledale7 62 ha, demand moderate
  272. 272Aquifer 1158: Sugar Lake7 15 km², demand moderate
  273. 273Aquifer 1160: Bear Valley Perched7 1.1 km², demand moderate
  274. 274Aquifer 1177: Coquihalla Canyon7 2.3 km², demand moderate
  275. 275Aquifer 71: West Pitt River6 14 km², demand low
  276. 276Aquifer 278: Peterson Creek6 2.2 km², demand low
  277. 277Aquifer 358: Fintry Fan, Short Creek6 95 ha, demand moderate
  278. 278Aquifer 546: Moyie River - South near Glenlily6 3.2 km², demand low
  279. 279Aquifer 583: East side of Telkwa River6 2.5 km², demand moderate
  280. 280Aquifer 640: E. of Tumbler Ridge; N. of Flatbed Ck.6 2.6 km², demand low
  281. 281Aquifer 685: Pacheedaht6 41 km², demand low
  282. 282Aquifer 845: Cortes Island6 26 ha, demand moderate
  283. 283Aquifer 954: Sakinaw Lake near Steep Spring6 1.5 km², demand low
  284. 284Aquifer 956: Lily Lake, Sunshine Coast6 2 km², demand low
  285. 285Aquifer 1183: Haida/Lawnhill6 3.1 km², demand moderate
  286. 286Aquifer 1238: Oyama Creek6 54 ha, demand not rated
  287. 287Aquifer 1264: The headwaters of the Trout Creek watershed, near the Okanagan Basin boundary6 205 km², demand not rated
  288. 288Aquifer 44: Lulu Island5 110 km², demand low
  289. 289Aquifer 46: Coquitlam River Floodplain5 9.9 km², demand low
  290. 290Aquifer 125: Pressy Lake5 5.4 km², demand low
  291. 291Aquifer 342: East of Vanderhoof/north of Prince George5 2.7 km², demand low
  292. 292Aquifer 398: Mamquam Valley5 6 km², demand low
  293. 293Aquifer 565: Francis Penninsula5 3.7 km², demand low
  294. 294Aquifer 598: Pouce Coupe Overburden Aquifer5 39 km², demand low
  295. 295Aquifer 713: Quilchena Cr; S shore of Nicola Lake5 3.5 km², demand moderate
  296. 296Aquifer 783: Coal Island, N of Swartz Bay5 1.4 km², demand low
  297. 297Aquifer 922: 3 Mile Lake / SE of Clinton5 58 ha, demand moderate
  298. 298Aquifer 1007: Hope5 2.8 km², demand low
  299. 299Aquifer 1013: Otter Lake, NW shoreline5 57 ha, demand moderate
  300. 300Aquifer 1058: Boivin Creek Fan at Elkford5 1.3 km², demand moderate
  301. 301Aquifer 1178: Eastern Kawkawa Lake5 90 ha, demand moderate
  302. 302Aquifer 1198: Cheam Slide5 5.9 km², demand not rated
  303. 303Aquifer 1200: Cultus Lake Fan Delta A5 20 ha, demand not rated
  304. 304Aquifer 1244: Port McNeill East Bedrock5 19 km², demand not rated
  305. 305Aquifer 1277: Paterson Overburden5 6.7 km², demand not rated
  306. 306Aquifer 1289: Muskwa River Alluvial5 29 km², demand not rated
  307. 307Aquifer 45: North Arm Delta4 16 km², demand low
  308. 308Aquifer 64: Mitchel Island4 1.4 km², demand low
  309. 309Aquifer 65: Sea Island4 15 km², demand low
  310. 310Aquifer 184: West Duncan4 2.7 km², demand moderate
  311. 311Aquifer 390: W side of Green Lk opposite Parkhurst4 10 ha, demand high
  312. 312Aquifer 396: Cheekye Fan4 5.1 km², demand low
  313. 313Aquifer 432: Mackenzie4 3.1 km², demand moderate
  314. 314Aquifer 480: South end of Christina Lk.4 94 ha, demand low
  315. 315Aquifer 692: Bear Creek; N of Stamp River Falls4 1.6 km², demand low
  316. 316Aquifer 693: Stamp River; d/s from Great Central Lake4 27 ha, demand moderate
  317. 317Aquifer 714: Nicola Lake Indian Reserve4 3.2 km², demand moderate
  318. 318Aquifer 825: Blue River- S of Valemont4 8.5 km², demand low
  319. 319Aquifer 1019: Fintry Provincial Park4 2.1 km², demand low
  320. 320Aquifer 1111: Inkaneep4 3.1 km², demand low
  321. 321Aquifer 1131: South of Froster Creek4 5.6 km², demand low
  322. 322Aquifer 1273: Peace-Valley Aquifer System4 107 km², demand not rated
  323. 323Aquifer 7: Harrison Mills3 6.2 km², demand low
  324. 324Aquifer 72: McMillan Island3 2.5 km², demand not rated
  325. 325Aquifer 402: Stawamus R valley, Squamish3 1.6 km², demand low
  326. 326Aquifer 415: Tsable River delta deposit3 80 ha, demand low
  327. 327Aquifer 544: Skookumchuk E.3 52 ha, demand low
  328. 328Aquifer 803: Revelstoke – Townsite3 59 ha, demand low
  329. 329Aquifer 867: Ashby Point, Shuswap Lake3 28 ha, demand moderate
  330. 330Aquifer 1041: Fort Nelson-River Alluvial Aquifer3 61 km², demand low
  331. 331Aquifer 1056: 1 km N of Elkford, Elk River Valley3 3.1 km², demand low
  332. 332Aquifer 1196: Elk Creek Fan3 2.3 km², demand not rated
  333. 333Aquifer 1288: Muskwa - Fort Nelson Glaciofluvial3 4.7 km², demand not rated
  334. 334Aquifer 40: Barnston Island2 6.2 km², demand low
  335. 335Aquifer 69: Port Moody2 2.8 km², demand low
  336. 336Aquifer 684: Goldstream River mouth, Finlayson Arm2 25 ha, demand low
  337. 337Aquifer 761: Quadra Island2 10 ha, demand moderate
  338. 338Aquifer 785: Comet Island, East of Sidney2 5 ha, demand moderate
  339. 339Aquifer 1080: Sparwood2 15 ha, demand high
  340. 340Aquifer 1083: East bank of Kitimat River2 68 ha, demand low
  341. 341Aquifer 1104: Silvermere Lake Island2 27 ha, demand moderate
  342. 342Aquifer 1105: South of Davis Lake2 20 ha, demand low
  343. 343Aquifer 43: Annacis Island1 5.5 km², demand low
  344. 344Aquifer 63: Westham Island1 10 km², demand low
  345. 345Aquifer 334: Hixon1 61 ha, demand low
  346. 346Aquifer 781: Kolb Island, East of Swartz Bay1 1 ha, demand moderate
  347. 347Aquifer 782: Fernie Island, East of Swartz Bay1 6 ha, demand low
  348. 348Aquifer 784: Forrest Island, East of Sidney1 25 ha, demand low
  349. 349Aquifer 1213: Marble Hill Unconsolidated1 69 ha, demand not rated

The province maps aquifers where wells and studies give enough to go on, mostly in settled valleys; most of BC isn't mapped, and a lot outside every outline can still have groundwater. Outlines are drawn from geology and well logs at the scale of the study, so an edge can be well off on the ground, and one aquifer can lie under another. Wells are linked to an aquifer by provincial staff from the driller's log: not every well inside an outline is linked, and well depths and yields are as the driller reported them, often from a short test.

These are mapped ratings and drillers' records, not a test of any one lot. Before you buy a property on a well, or plan to drill, ask a qualified hydrogeologist or a registered well driller what this aquifer gives where you are, and test the water.

Sources: Ground Water Aquifers, Water Protection and Sustainability Branch, Province of BC and Groundwater Wells (GWELLS), Province of BC, as published on October 1, 2026 (Open Government Licence – British Columbia); ratings explained after Berardinucci and Ronneseth (2002), Guide to Using the BC Aquifer Classification Maps for the Protection and Management of Groundwater, BC Ministry of Water, Land and Air Protection. Summaries by PlaceDossier.

Other rankings: aquifers with the most wells, largest aquifers, aquifers with the deepest wells, aquifers with the highest well yields, aquifers with the most flowing wells.