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The following provides an overview of groundwater conditions in British Columbia.

This report was generated on September 09, 2026.

Background

The province maintains a network of groundwater observation wells to monitor water levels in priority aquifers. These observation wells (OW) record water level fluctuations which allow for improved understanding of how aquifers respond to changes in climate, precipitation, and effects from pumping. Many of the observation wells are equipped with satellite telemetry to provide real time information on water levels.

The following summaries compare recent groundwater levels to all historical continuous daily records to determine percentile classes, with a minimum of 5 years of data. Historical monthly water level samples (before ~2004) are not included. A percentile is on a scale of 100 and indicates the percent of a distribution that is equal to or below it. For example, a groundwater level at the 10th percentile is equal to or greater than 10% of the water level values recorded on this day of the year during all previous years of data.

In general, a groundwater level value that is:

  • the highest ever measured for the day of year is considered High
  • greater than the 90th percentile is considered Much Above Normal
  • between 75th percentile and 90th percentile is considered Above Normal
  • between 25th and 75th percentiles is considered Normal
  • less than the 25 percentile is considered Below Normal
  • less than 10 percentile is considered Much Below Normal
  • the lowest ever measured for the day of year is considered Low

Wells classified as “Not Available” in this report do not have recent groundwater level data within the past 14 days or do not have sufficient data (less than 5 years continuous data).


Definition of Normal

It should be noted that describing water levels relative to “normal” steady state baselines requires historical water levels of a well to be relatively stationary and without significant trending in the short or long-term. Use of the term “normal” in reference to groundwater levels that are indicating a trending pattern should be regarded with caution, as there is no true “normal” water level for a given time of year in these scenarios. As a result, this report uses the “normal” term solely in reference to water levels between the 25th to 75th percentiles of historical data, not to imply a steady state baseline for comparison. Percentile data should be interpreted with the context of long-term data records, patterns, and trends.

Groundwater Level Conditions


Wells by Percentile Class

Current Year
Last Year
2026-09-08 2025-09-08
High (100) 5 (2.3%) 7 (3.2%)
Much Above Normal (90-100) 3 (1.4%) 13 (5.9%)
Above Normal (75-90) 9 (4.1%) 25 (11.4%)
Normal (25-75) 62 (28.2%) 100 (45.7%)
Below Normal (10-25) 18 (8.2%) 29 (13.2%)
Much Below Normal (0-10) 10 (4.5%) 16 (7.3%)
Low (0) 26 (11.8%) 26 (11.9%)
Across All Classes 133 216

Percentile Class Changes Since Last Year

This plot shows groundwater level percentile classes for each day over the past year to observe how conditions have changed over time. Using a different colour scheme than the rest of the report for visual purposes, more darker brown colours mean more wells in lower percentiles while more darker blues mean more wells in higher percentiles. Water levels in the 25-75th percentiles are in the lightest blue.

Wells Below Normal

This section reports on the percentage and number of wells below the 25th percentile for the past 14 days and one year prior for comparison. Only wells with data during the two time periods are included.

All Wells

Current Year
Last Year
2026-09-08 2025-09-08
24.5% (54/133) 32.4% (71/216)

By Aquifer Type

Aquifer Type
Current Year
Last Year
2026-09-07 2025-09-08
Confined sand and gravel 32.1% (26/81)
Crystalline bedrock 40% (10/25)
Sedimentary 38.3% (13/34)
Unconfined sand and gravel 28.8% (21/73)
NA 100% (2/2) 16.7% (1/6)

Latest Details

Latest details on observation wells. Click on a well number in the table to find a link to a hydrograph and long-term record plot. Click on an aquifer number to find more information about the aquifer.

Well Location Aquifer Aquifer Type Latest Date Percentilea
North Area - Northeast
OW124 Charlie Lake 1271 Sedimentary ** 2026-07-17 Not Available
(n = 23)
OW286 Tumbler Ridge 635 Unconfined sand and gravel ** 2025-06-10 Not Available
(n = 22)
OW416 Dawson Creek Area / Groundbirch 595 Sedimentary ** 2026-09-08 Below Normal (16.7%)
(n = 13)
OW417 Dawson Creek Area / Groundbirch 595 Sedimentary ** 2026-09-08 Much Below Normal (8.3%)
(n = 12)
OW418 Dawson Creek Area / Farmington 633 Sedimentary 2026-04-29 Not Available
(n = 14)
OW420 Dawson Creek Area 593 Sedimentary ** 2026-09-08 Normal (53.8%)
(n = 14)
OW445 Dawson Creek Area / Groundbirch 590 Confined sand and gravel ** 2026-09-08 Normal (36.4%)
(n = 12)
OW482 Fort Nelson 1040 Confined sand and gravel ** 2026-09-07 High (100%)
(n = 8)
North Area - Omineca
OW293 Ferguson Lake 332 Confined sand and gravel ** 2026-09-07 High (100%)
(n = 23)
OW378 Prince George 92 Unconfined sand and gravel ** 2026-09-08 Normal (37.5%)
(n = 19)
OW455 Vanderhoof 242 Confined sand and gravel ** 2026-09-07 Normal (75%)
(n = 9)
OW502 Valemount 800 Confined sand and gravel ** 2026-09-08 Normal (60%)
(n = 5)
OW513 Terrace 575 Unconfined sand and gravel 2026-06-25 Not Available
(n = 8)
North Area - Skeena
OW200 Dease Lake 828 Confined sand and gravel ** 2026-09-07 Below Normal (13.3%)
(n = 16)
OW377 Smithers 585 Confined sand and gravel ** 2026-09-07 Normal (50%)
(n = 18)
OW386 Houston 659 Unconfined sand and gravel ** 2026-09-07 Normal (71.4%)
(n = 16)
OW501 Kitimat 1085 Confined sand and gravel ** 2026-09-07 Normal (75%)
(n = <5)
South Area - Cariboo
OW081 83 Mile 124 Crystalline bedrock ** 2026-06-03 Not Available
(n = 22)
OW082 Barkerville NA
** 2026-06-02 Not Available
(n = 18)
OW088 Williams Lake 146 Confined sand and gravel 2026-06-02 Not Available
(n = 23)
OW260 Quesnel Red Bluff 115 Confined sand and gravel 2026-06-02 Not Available
(n = 22)
OW261 Williams Lake 148 Crystalline bedrock ** 2026-06-02 Not Available
(n = 23)
OW289 Williams Lake 139 Confined sand and gravel 2026-06-02 Not Available
(n = 22)
OW364 Quesnel - 2 Mile Flats 370 Unconfined sand and gravel ** 2026-09-08 High (100%)
(n = 20)
OW374 108 Mile Subdivision 131 Confined sand and gravel ** 2026-04-24 Not Available
(n = 19)
OW376 Junction Sheep Range Park NA
** 2026-04-29 Not Available
(n = 19)
South Area - Central Kootenay
OW074 Ootischenia 501 Confined sand and gravel 2025-11-26 Not Available
(n = 15)
South Area - Central Okanagan
OW115 Mission Creek NA
** 2026-09-07 Below Normal (13.3%)
(n = 22)
OW172 Oyama 1238 Unconfined sand and gravel ** 2026-09-08 Normal (50%)
(n = 23)
OW236 Rutland 464 Confined sand and gravel ** 2026-09-07 Normal (33.3%)
(n = 23)
OW262 Kelowna 464 Confined sand and gravel ** 2026-09-07 Below Normal (19%)
(n = 22)
OW356 Winfield 344 Confined sand and gravel ** 2026-09-08 Much Below Normal (9.1%)
(n = 22)
OW410 Joe Riche 473 Crystalline bedrock ** 2026-09-08 Low (0%)
(n = 14)
OW411 West Kelowna 304 Sedimentary ** 2026-09-08 Below Normal (23.1%)
(n = 13)
OW413 SE Kelowna 464 Confined sand and gravel ** 2026-09-08 Low (0%)
(n = 12)
OW442 Kelowna 464 Confined sand and gravel ** 2026-09-07 Normal (25%)
(n = 12)
South Area - Columbia-Shuswap
OW185 Salmon River 97 Unconfined sand and gravel ** 2026-09-08 Low (0%)
(n = 23)
OW302 Malakwa 307 Unconfined sand and gravel ** 2026-04-23 Not Available
(n = 22)
OW309 Golden 450 Confined sand and gravel ** 2026-09-07 Normal (31.8%)
(n = 23)
OW365 Shuswap Lake Park Deep 229 Unconfined sand and gravel ** 2026-06-10 Not Available
(n = 20)
OW381 Grindrod Hwy 108 Unconfined sand and gravel ** 2026-05-13 Not Available
(n = 18)
OW464 Grindrod Hwy 109 Confined sand and gravel ** 2026-05-13 Not Available
(n = 19)
South Area - East Kootenay
OW291 Cranbrook 523 Sedimentary ** 2026-09-07 Normal (66.7%)
(n = 23)
OW362 Jaffray 521 Unconfined sand and gravel ** 2026-09-07 Low (0%)
(n = 21)
OW363 Wasa 540 Unconfined sand and gravel ** 2026-09-07 Normal (45%)
(n = 21)
OW468 Cranbrook 525 Confined sand and gravel ** 2026-09-07 Below Normal (12.5%)
(n = 8)
South Area - Kootenay Boundary
OW217 Grand Forks 158 Unconfined sand and gravel ** 2026-09-07 Low (0%)
(n = 22)
OW306 Beaverdell 482 Unconfined sand and gravel ** 2026-09-07 Much Below Normal (9.5%)
(n = 22)
OW444 Midway 478 Unconfined sand and gravel ** 2026-09-07 Low (0%)
(n = 8)
South Area - North Okanagan
OW047 Silver Star Mountian 351 Crystalline bedrock 2025-11-05 Not Available
(n = 18)
OW117 Armstrong 1155 Confined sand and gravel 2026-07-30 Not Available
(n = 23)
OW118 Armstrong 1155 Confined sand and gravel ** 2026-09-07 Low (0%)
(n = 22)
OW122 Enderby 1155 Confined sand and gravel ** 2026-09-07 Low (0%)
(n = 19)
OW180 Armstrong 353 Unconfined sand and gravel ** 2026-09-07 Normal (30%)
(n = 23)
OW294 Lumby 316 Unconfined sand and gravel ** 2026-09-07 Low (0%)
(n = 23)
OW311 Vernon Bx Creek 351 Crystalline bedrock 2026-07-30 Not Available
(n = 19)
OW384 Armstrong Spallumcheen 102 Confined sand and gravel ** 2026-09-07 Low (0%)
(n = 18)
OW409 Spallumcheen 103 Unconfined sand and gravel ** 2026-09-08 Low (0%)
(n = 14)
OW487 Lumby 314 Confined sand and gravel ** 2026-09-08 Low (0%)
(n = 6)
South Area - Similkameen
OW075 Keremeos 259 Unconfined sand and gravel ** 2026-09-07 Above Normal (83.3%)
(n = 19)
OW154 Summerland 297 Unconfined sand and gravel 2025-12-12 Not Available
(n = 16)
OW203 Cawston 259 Unconfined sand and gravel ** 2026-09-07 Much Above Normal (95%)
(n = 22)
OW264 Mt. Kobau 1113 Crystalline bedrock 2026-06-10 Not Available
(n = 13)
OW282 Willowbrook/Meyers Flats 257 Confined sand and gravel ** 2026-09-07 Normal (42.9%)
(n = 22)
OW332 Oliver 254 Unconfined sand and gravel 2026-07-21 Not Available
(n = 21)
OW387 Penticton Creek Watershed NA
** 2026-09-07 Low (0%)
(n = 18)
OW401 Osoyoos 808 Crystalline bedrock ** 2026-09-07 Low (0%)
(n = 15)
OW402 Osoyoos 936 Crystalline bedrock ** 2026-09-07 Low (0%)
(n = 15)
OW403 Twin Lakes 261 Unconfined sand and gravel ** 2026-09-07 Below Normal (13.3%)
(n = 15)
OW404 Twin Lakes 260 Crystalline bedrock ** 2026-09-07 Low (0%)
(n = 15)
OW405 Oliver 256 Unconfined sand and gravel ** 2026-09-07 Much Below Normal (7.7%)
(n = 15)
OW407 Oliver 255 Unconfined sand and gravel ** 2026-09-07 Low (0%)
(n = 15)
OW412 Summerland 1264 Crystalline bedrock ** 2026-09-08 Much Below Normal (8.3%)
(n = 13)
OW467 Osoyoos East 194 Unconfined sand and gravel ** 2026-09-07 Normal (62.5%)
(n = 8)
South Area - Thompson-Nicola
OW035 Stump Lake 1174 Confined sand and gravel ** 2026-05-20 Not Available
(n = 21)
OW045 Westwold 289 Unconfined sand and gravel 2026-06-15 Not Available
(n = 19)
OW080 Clinton 920 Unconfined sand and gravel 2026-06-03 Not Available
(n = 22)
OW296 Merritt 74 Unconfined sand and gravel ** 2026-09-08 Normal (30.4%)
(n = 23)
OW375 Blue River 825 Unconfined sand and gravel ** 2026-06-11 Not Available
(n = 20)
OW399 Knutsford 276 Crystalline bedrock 2026-05-21 Not Available
(n = 16)
OW400 Hat Creek 134 Unconfined sand and gravel 2026-06-18 Not Available
(n = 14)
OW422 Logan Lake 822 Confined sand and gravel ** 2026-04-21 Not Available
(n = 15)
OW423 Hat Creek 133 Confined sand and gravel 2026-06-18 Not Available
(n = 14)
OW494 Merritt 1168 Confined sand and gravel ** 2026-09-07 Low (0%)
(n = 7)
South Coast Region - Lower Mainland / Fraser Valley
OW002 Abbotsford 15 Unconfined sand and gravel ** 2026-09-07 Normal (47.8%)
(n = 23)
OW008 Abbotsford 15 Unconfined sand and gravel ** 2026-09-07 Normal (54.5%)
(n = 23)
OW255 Chilliwack 1216 Crystalline bedrock ** 2026-08-13 Not Available
(n = 23)
OW272 Abbotsford 15 Unconfined sand and gravel ** 2026-09-07 Normal (31.8%)
(n = 23)
OW275 Surrey 41 Unconfined sand and gravel ** 2026-09-07 Above Normal (86.4%)
(n = 23)
OW299 Abbotsford 15 Unconfined sand and gravel ** 2026-09-07 Normal (50%)
(n = 23)
OW301 Abbotsford 15 Unconfined sand and gravel ** 2026-09-07 Above Normal (77.3%)
(n = 23)
OW349 Belcarra 68 Crystalline bedrock ** 2026-04-10 Not Available
(n = 23)
OW353 Langley 41 Unconfined sand and gravel ** 2026-09-07 Above Normal (81%)
(n = 22)
OW354 Langley 35 Unconfined sand and gravel ** 2026-09-07 Normal (66.7%)
(n = 21)
OW357 Abbotsford 29 Confined sand and gravel ** 2026-04-24 Not Available
(n = 22)
OW360 Langley 41 Unconfined sand and gravel ** 2026-09-08 Normal (45%)
(n = 21)
OW361 Langley 27 Confined sand and gravel ** 2026-09-07 Above Normal (88.2%)
(n = 21)
OW406 Chilliwack 8 Unconfined sand and gravel ** 2026-09-08 Normal (30.8%)
(n = 16)
OW414 Langley 1144 Confined sand and gravel ** 2026-09-07 Much Below Normal (7.1%)
(n = 15)
OW415 Langley 33 Confined sand and gravel ** 2026-09-07 Low (0%)
(n = 15)
OW440 Langley 50 Confined sand and gravel ** 2026-09-07 Low (0%)
(n = 9)
OW441 Abbotsford 28 Confined sand and gravel ** 2026-09-07 Below Normal (16.7%)
(n = 13)
OW446 Langley 52 Confined sand and gravel ** 2026-09-08 Normal (38.5%)
(n = 13)
OW447 Surrey 61 Confined sand and gravel 2026-01-26 Not Available
(n = 13)
OW448 Agassiz 4 Unconfined sand and gravel ** 2026-09-08 Normal (30.8%)
(n = 13)
OW449 Agassiz 4 Unconfined sand and gravel ** 2026-09-07 Normal (66.7%)
(n = 13)
OW450 Chilliwack 6 Unconfined sand and gravel ** 2026-09-08 Below Normal (16.7%)
(n = 12)
OW451 Hope 1 Unconfined sand and gravel ** 2026-09-07 Normal (36.4%)
(n = 12)
OW452 Langley 37 Unconfined sand and gravel ** 2026-09-08 Above Normal (83.3%)
(n = 12)
OW453 Langley 35 Unconfined sand and gravel ** 2026-09-08 Normal (36.4%)
(n = 12)
OW456 Langley 59 Unconfined sand and gravel ** 2026-06-15 Not Available
(n = 9)
OW457 Abbotsford 21 Unconfined sand and gravel ** 2026-09-07 Below Normal (22.2%)
(n = 9)
OW458 Langley 27 Confined sand and gravel 2026-07-30 Not Available
(n = 12)
OW459 Chilliwack 8 Unconfined sand and gravel ** 2026-09-07 Normal (37.5%)
(n = 8)
OW461 Surrey 58 Confined sand and gravel ** 2026-05-11 Not Available
(n = 9)
OW462 Maple Ridge 19 Sedimentary ** 2026-09-08 Normal (25%)
(n = 8)
OW463 Mission 884 Confined sand and gravel ** 2026-09-07 Normal (25%)
(n = 8)
OW474 Miracle Valley 25 Confined sand and gravel ** 2026-03-09 Not Available
(n = 8)
OW479 Maple Ridge 19 Sedimentary ** 2026-09-07 Normal (71.4%)
(n = 8)
OW485 Dewdney 12 Unconfined sand and gravel ** 2026-09-07 Normal (57.1%)
(n = 7)
OW486 Deroche 12 Unconfined sand and gravel ** 2026-09-07 Normal (42.9%)
(n = 7)
OW490 Langley 24 Unconfined sand and gravel 2026-04-23 Not Available
(n = 10)
OW491 Maple Ridge 26 Confined sand and gravel ** 2026-09-08 Normal (50%)
(n = 6)
OW492 Columbia Valley 20 Unconfined sand and gravel ** 2026-09-07 Normal (33.3%)
(n = 6)
South Coast Region - Sea-to-Sky Corridor
OW454 Squamish 401 Unconfined sand and gravel ** 2026-09-08 Low (0%)
(n = 11)
OW475 Pemberton 326 Unconfined sand and gravel ** 2026-09-07 Normal (37.5%)
(n = 8)
OW476 Pemberton 326 Unconfined sand and gravel ** 2026-09-07 Normal (37.5%)
(n = 8)
OW477 Whistler 395 Unconfined sand and gravel ** 2026-09-07 Below Normal (12.5%)
(n = 8)
OW478 Whistler 387 Unconfined sand and gravel ** 2026-09-07 Normal (25%)
(n = 8)
OW483 Squamish 397 Confined sand and gravel ** 2026-09-07 Normal (57.1%)
(n = 7)
South Coast Region - Sunshine Coast
OW292 Powell River 836 Confined sand and gravel 2026-05-05 Not Available
(n = 22)
OW460 Gibsons 560 Unconfined sand and gravel ** 2026-09-07 Low (0%)
(n = 16)
OW471 Lund 960 Crystalline bedrock ** 2026-05-06 Not Available
(n = 8)
OW473 Bowen Island 747 Crystalline bedrock ** 2026-09-07 Normal (28.6%)
(n = 7)
OW480 Keats Island 548 Crystalline bedrock 2026-04-16 Not Available
(n = 8)
OW495 Bowen Island 746 Crystalline bedrock ** 2026-06-16 Not Available
(n = 8)
OW497 Scrd 560 Unconfined sand and gravel ** 2026-09-08 Below Normal (20%)
(n = 5)
OW498 Sechelt 566 Unconfined sand and gravel ** 2026-09-08 Normal (60%)
(n = 5)
OW499 Sechelt 566 Unconfined sand and gravel ** 2026-08-29 Normal (40%)
(n = 5)
OW500 Savary Island NA
** 2026-05-06 Not Available
(n = <5)
West Coast Region - Alberni-Clayoquot Regional District
OW329 Ucluelet 159 Unconfined sand and gravel ** 2026-09-08 Normal (56.5%)
(n = 23)
West Coast Region - Capital Regional District
OW058 North Saanich 610 Confined sand and gravel ** 2026-09-07 Normal (28.6%)
(n = 21)
OW060 North Saanich 609 Confined sand and gravel ** 2026-09-08 Normal (66.7%)
(n = 22)
OW071 Saanich 616 Confined sand and gravel 2026-08-13 Not Available
(n = 21)
OW125 Mayne Island 620 Sedimentary ** 2026-06-10 Not Available
(n = 21)
OW128 Mayne Island 447 Sedimentary ** 2026-09-08 Much Below Normal (9.1%)
(n = 22)
OW240 North Saanich 608 Crystalline bedrock ** 2026-09-07 Low (0%)
(n = 23)
OW258 Galiano Island 320 Sedimentary ** 2026-09-08 Much Below Normal (4.8%)
(n = 23)
OW265 North Saanich 608 Crystalline bedrock 2026-03-06 Not Available
(n = 24)
OW281 Saltspring Island 721 Sedimentary ** 2026-09-08 Normal (52.4%)
(n = 23)
OW283 Pender Island 711 Sedimentary ** 2026-09-08 Much Below Normal (4.3%)
(n = 23)
OW284 Pender Island 720 Sedimentary ** 2026-09-08 Normal (56.5%)
(n = 23)
OW290 Saturna Island 737 Sedimentary ** 2026-09-08 Low (0%)
(n = 21)
OW319 Saturna Island 735 Sedimentary ** 2026-09-07 Below Normal (10.5%)
(n = 21)
OW327 Galiano Island 320 Sedimentary ** 2026-06-10 Not Available
(n = 23)
OW338 Central Saanich 608 Crystalline bedrock 2026-08-24 Not Available
(n = 23)
OW343 Central Saanich 608 Crystalline bedrock ** 2026-09-08 Much Below Normal (9.1%)
(n = 22)
OW372 Gowlland Tod Park 680 Crystalline bedrock 2026-07-15 Not Available
(n = 19)
OW373 Salt Spring Island 722 Sedimentary ** 2026-09-08 Above Normal (88.9%)
(n = 20)
OW438 Salt Spring Island 721 Sedimentary ** 2026-09-07 Normal (41.7%)
(n = 12)
OW443 Sooke 606 Crystalline bedrock 2026-08-06 Not Available
(n = 8)
OW469 Sooke 599 Confined sand and gravel ** 2026-09-08 Normal (50%)
(n = 8)
West Coast Region - Comox Valley Regional District
OW268 Denman Island 740 Sedimentary ** 2026-09-07 Normal (59.1%)
(n = 23)
OW288 Hornby Island 438 Sedimentary ** 2026-09-08 Normal (72.7%)
(n = 23)
OW351 Comox 408 Unconfined sand and gravel 2026-04-27 Not Available
(n = 23)
OW369 Oyster R. Unconsolidated NA
2026-05-05 Not Available
(n = 20)
OW371 T'sable River 415 Unconfined sand and gravel ** 2026-09-08 Above Normal (88.9%)
(n = 20)
West Coast Region - Cowichan Valley Regional District
OW204 Duncan 186 Unconfined sand and gravel 2026-07-15 Not Available
(n = 23)
OW211 Duncan 186 Unconfined sand and gravel 2026-07-15 Not Available
(n = 23)
OW233 Cowichan Bay 197 Confined sand and gravel 2026-05-27 Not Available
(n = 23)
OW320 Cobble Hill 197 Confined sand and gravel ** 2026-09-08 Below Normal (11.1%)
(n = 16)
OW345 Cobble Hill 197 Confined sand and gravel ** 2026-06-05 Not Available
(n = 23)
OW355 Chemainus 172 Unconfined sand and gravel ** 2026-09-08 Normal (54.5%)
(n = 22)
OW428 Cowichan 1287 Confined sand and gravel 2026-05-07 Not Available
(n = 13)
OW429 Cowichan 178 Confined sand and gravel 2026-05-07 Not Available
(n = 13)
OW430 Cowichan 198 Sedimentary ** 2026-05-07 Not Available
(n = 13)
OW431 Cowichan 199 Confined sand and gravel ** 2026-05-07 Not Available
(n = 13)
OW439 Cobble Hill 203 Crystalline bedrock ** 2026-09-07 High (100%)
(n = 9)
OW470 Mill Bay 206 Unconfined sand and gravel ** 2026-09-07 Normal (37.5%)
(n = 8)
OW488 Cowichan Station 197 Confined sand and gravel ** 2026-09-07 Normal (33.3%)
(n = 7)
OW489 Cowichan Station 197 Confined sand and gravel ** 2026-05-27 Not Available
(n = 7)
OW493 Cowichan Station 198 Sedimentary 2026-05-27 Not Available
(n = 6)
West Coast Region - Mount Waddington Regional District
OW201 Alert Bay 858 Confined sand and gravel ** 2026-09-08 Normal (52.4%)
(n = 22)
West Coast Region - Regional District of Nanaimo
OW196 Gabriola Island 709 Sedimentary ** 2026-09-07 Normal (35%)
(n = 23)
OW197 Gabriola Island 709 Sedimentary ** 2026-09-08 Below Normal (10%)
(n = 23)
OW232 Lantzville 215 Confined sand and gravel 2026-04-17 Not Available
(n = 23)
OW287 Coombs 220 Sedimentary ** 2026-06-18 Not Available
(n = 23)
OW295 Qualicum Beach 217 Confined sand and gravel ** 2026-09-08 Much Above Normal (91.3%)
(n = 23)
OW303 Qualicum Beach 1250 Confined sand and gravel ** 2026-05-26 Not Available
(n = 23)
OW304 Parksville 216 Confined sand and gravel ** 2026-07-30 Not Available
(n = 23)
OW310 Bowser 416 Confined sand and gravel ** 2026-09-08 Below Normal (21.1%)
(n = 23)
OW312 Cassidy 161 Unconfined sand and gravel 2026-04-10 Not Available
(n = 23)
OW314 Parksville 216 Confined sand and gravel ** 2026-09-08 Normal (65.2%)
(n = 23)
OW316 Gabriola Island 709 Sedimentary ** 2026-09-07 Normal (31.8%)
(n = 23)
OW321 Qualicum 1250 Confined sand and gravel ** 2026-05-26 Not Available
(n = 23)
OW337 Ladysmith 162 Sedimentary ** 2026-04-10 Not Available
(n = 22)
OW340 Lantzville 215 Confined sand and gravel ** 2026-04-17 Not Available
(n = 23)
OW385 Gabriola Island 709 Sedimentary ** 2026-09-07 Low (0%)
(n = 16)
OW388 Nanaimo 211 Crystalline bedrock ** 2026-08-14 Not Available
(n = 16)
OW389 Qualicum Beach 664 Unconfined sand and gravel ** 2026-09-08 Above Normal (81.2%)
(n = 16)
OW390 Cedar 162 Sedimentary ** 2026-09-07 High (100%)
(n = 15)
OW391 Little Qualicum 662 Confined sand and gravel ** 2026-09-08 Below Normal (21.4%)
(n = 15)
OW392 Nanoose 1098 Confined sand and gravel ** 2026-07-30 Not Available
(n = 15)
OW393 Nanoose 219 Confined sand and gravel 2026-07-30 Not Available
(n = 15)
OW394 Nanoose 218 Sedimentary 2026-07-30 Not Available
(n = 14)
OW395 Nanoose 219 Confined sand and gravel 2026-07-30 Not Available
(n = 14)
OW396 Nanoose 219 Confined sand and gravel ** 2026-09-08 Low (0%)
(n = 14)
OW397 Nanoose 1098 Confined sand and gravel ** 2026-09-08 Much Above Normal (90.9%)
(n = 14)
OW398 Parksville 216 Confined sand and gravel ** 2026-06-18 Not Available
(n = 13)
OW424 Coombs 1250 Confined sand and gravel ** 2026-09-07 Normal (46.2%)
(n = 13)
OW425 Qualicum 1251 Confined sand and gravel ** 2026-06-15 Not Available
(n = 13)
OW426 Qualicum 662 Confined sand and gravel ** 2026-06-15 Not Available
(n = 13)
OW427 Qualicum 416 Confined sand and gravel ** 2026-06-15 Not Available
(n = 13)
OW432 Yellowpoint 162 Sedimentary 2026-04-10 Not Available
(n = 13)
OW433 Qualicum 1250 Confined sand and gravel 2026-05-26 Not Available
(n = 13)
OW434 Qualicum 217 Confined sand and gravel 2026-05-26 Not Available
(n = 13)
OW435 South Wellington 165 Sedimentary 2026-04-10 Not Available
(n = 13)
OW436 Cassidy 160 Confined sand and gravel 2026-04-23 Not Available
(n = 10)
OW437 Cassidy 161 Unconfined sand and gravel 2026-04-10 Not Available
(n = 10)
West Coast Region - Strathcona Regional District
OW383 Quadra Island 751 Unconfined sand and gravel ** 2026-09-07 Below Normal (11.8%)
(n = 18)
a n is the number of years included in the percentile calculation.
** Values with a Working approval status

Historical Water Level Plots

Annual hydrographs and historical records for the observation wells summarized above can be found in this section.

Note: ‘Working’ data are preliminary and have not yet been finalized as ‘Approved’ data with approved corrections and data grades for quality assurance. Quality assurance procedures may result in differences between what is displayed as ‘Working’ and what will become the official record.

OW002OW008OW035OW045OW047OW058OW060OW071OW074OW075OW080OW081OW082OW088OW115OW117OW118OW122OW124OW125OW128OW154OW172OW180OW185OW196OW197OW200OW201OW203OW204OW211OW217OW232OW233OW236OW240OW255OW258OW260OW261OW262OW264OW265OW268OW272OW275OW281OW282OW283OW284OW286OW287OW288OW289OW290OW291OW292OW293OW294OW295OW296OW299OW301OW302OW303OW304OW306OW309OW310OW311OW312OW314OW316OW319OW320OW321OW327OW329OW332OW337OW338OW340OW343OW345OW349OW351OW353OW354OW355OW356OW357OW360OW361OW362OW363OW364OW365OW369OW371OW372OW373OW374OW375OW376OW377OW378OW381OW383OW384OW385OW386OW387OW388OW389OW390OW391OW392OW393OW394OW395OW396OW397OW398OW399OW400OW401OW402OW403OW404OW405OW406OW407OW409OW410OW411OW412OW413OW414OW415OW416OW417OW418OW420OW422OW423OW424OW425OW426OW427OW428OW429OW430OW431OW432OW433OW434OW435OW436OW437OW438OW439OW440OW441OW442OW443OW444OW445OW446OW447OW448OW449OW450OW451OW452OW453OW454OW455OW456OW457OW458OW459OW460OW461OW462OW463OW464OW467OW468OW469OW470OW471OW473OW474OW475OW476OW477OW478OW479OW480OW482OW483OW485OW486OW487OW488OW489OW490OW491OW492OW493OW494OW495OW497OW498OW499OW500OW501OW502OW513

Appendices

A - Disclaimer

Warranty Disclaimer

This information is provided as a public service by the Government of British Columbia, Box 9411, Victoria, British Columbia, Canada V8W 9V1.

This website and all of the information it contains are provided “as is” without warranty of any kind, whether express or implied. All implied warranties, including, without limitation, implied warranties of merchantability, fitness for a particular purpose, and non-infringement, are hereby expressly disclaimed. Links and references to any other websites are provided for information only and listing shall not be taken as endorsement of any kind. The Government of British Columbia is not responsible for the content or reliability of the linked websites and does not endorse the content, products, services or views expressed within them.

Limitation of Liabilities

Under no circumstances will the Government of British Columbia be liable to any person or business entity for any direct, indirect, special, incidental, consequential, or other damages based on any use of this website or any other website to which this site is linked, including, without limitation, any lost profits, business interruption, or loss of programs or information, even if the Government of British Columbia has been specifically advised of the possibility of such damages.

B - Calculations

General details

  • Water year starts in October.
  • Well measurements are all in Depth Below Ground in metres.

Percentiles

  • Percentiles are calculated individually for each day of the year for each well, so only years with continuous daily data are used in calculations (no historic point samples used).
  • Recent percentiles values are calculated with all years of data, however the current year values are not considered for the percentile class hydrograph plots; and so there may be slight differences in how the most recent value’s percentile compares on the figure.
  • Minimum 5 years of data required for a percentile calculation.
  • 366th day in leap years is omitted.