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BC aquifer 1267 · bedrock · 515 km² · Cariboo
Aquifer 1267: Lower Bridge Creek Valley Bedrock
Aquifer 1267 (Lower Bridge Creek Valley Bedrock) is a fractured crystalline bedrock aquifer of 515 km² in the Cariboo Regional District, mapped in 2022. The province rates its productivity moderate and its vulnerability to contamination from the surface moderate; its demand is not rated. 165 wells on record are linked to it; water-supply wells there are typically 64.6 m deep and tested at a median 15.9 L/min. It lies under Cariboo, Electoral Area H (52%), Cariboo, Electoral Area G (23%), Cariboo, Electoral Area L (12%), One Hundred Mile House (9%).
How the province rates it
Productivity moderate, vulnerability moderate, demand not rated.
| Rating | What it means | |
|---|---|---|
| Productivity how much water the aquifer gives up to wells, judged from well yields, the aquifer material and pumping tests | moderate | Middling yields: the guide's moderate band is medium sand, or typical well yields of about 0.3 to 3 L/s (18 to 180 L/min). |
| Vulnerability how easily something spilled at the ground surface could reach the water, judged from what lies above the aquifer and how deep the water is | moderate (class B) | Some natural protection (class B), which can vary across the aquifer. |
| Demand how much the aquifer is used now, judged from the number and density of wells and what they're used for | not rated | The province hasn't rated this for this aquifer. |
| Level of development Inferred demand compared with productivity | unclear | Unclear: the province hasn't rated both demand and productivity. |
Ratings are the province's, set when the aquifer was mapped (2022) from wells, geology and local studies. Vulnerability is about the ground, not what's built on it: a well-protected aquifer under a busy area can still be at more risk than an exposed one in the bush.
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.
The wells in it
165 wells on record are linked to this aquifer.
| Wells linked | 165 (134 water-supply) |
|---|---|
| Water-supply well depth | median 64.6 m; middle half 42.7 m to 97.5 m (133 wells) |
| Tested yield | median 15.9 L/min; middle half 6.1 L/min to 49.2 L/min (105 wells tested) |
| Water level below ground | median 16.3 m when drilled (84 wells) |
| Flowing (artesian) wells | 3: water rose to or above the ground when drilled |
| Drilled | 1950 to 2021 |
This aquifer's medianIts middle half of wellsAnother BC aquifer's median
Depths are how deep the driller finished the well; yields are the driller's test, often an hour or less, in litres per minute. A domestic well's yield is usually judged against the household's peak use; ask a driller what's enough for yours.
Where it is
Outline simplified by us from the provincial map; not for locating a lot.
| Kind | Fractured crystalline bedrock |
|---|---|
| Geological unit | Chilcotin/ Kamloops/ Nicola |
| Location, as described | Lower Bridge Creek valley, approximately from 100 Mile House to Canim Lake |
| Area | 515 km² |
| Water quality concerns | Regional: concerns documented across much of the aquifer |
| Mapped | 2022 |
Bedrock: water moves through cracks in the rock, so two wells close together can find very different amounts. The province's page for this aquifer lists the studies behind it and its observation wells: GWELLS aquifer 1267.
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.
What this record doesn't cover
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.