Chase

Its land, ranked in BC

Shares of the land area, worked out from the Province's maps. Fire perimeters before the 1950s are less complete. A title or a past fire somewhere in the area says nothing about a given lot: a property report checks the parcel itself.

Large fires (1,000 ha or more) since 1990

Since 1990, one wildfire of 1,000 ha or more burned in Chase: the Bush Creek East wildfire in 2023, 28 ha here, 6% of its land.

1. 2023Bush Creek East wildfire45,745 ha in all · under 1% of it here28 ha here

Smaller mapped fires since 2016

No fire under 1,000 ha that the BC Wildfire Service mapped since 2016 reached Chase.

Small fires that were never mapped as a perimeter aren't listed: the BC Wildfire Service maps an outline for only some of the fires it records. Past fire is history, not a forecast. The chance of fire on a lot today depends on what the record doesn't show: the forest and grass around it, the slope, what has been thinned or burned since, and how far it is from a fire hall. Every BC season and large fire since 1990.

Sources: BC Wildfire Fire Perimeters – Historical, BC Wildfire Service; BC Wildfire Fire Perimeters – Current, BC Wildfire Service; BC Wildfire Fire Incident Locations – Historical, BC Wildfire Service; BC Wildfire Fire Locations – Current, BC Wildfire Service (Open Government Licence – British Columbia), as published on November 10, 2026; 2021 census subdivision boundaries, Statistics Canada (Statistics Canada Open Licence). Outlines simplified and places measured by PlaceDossier.

How the land burned

On the Province's ecosystem map, all of Chase's land is NDT4: grassland and dry open forest that burned often and lightly, with surface fires every 4 to 50 years in the Ponderosa Pine and Interior Douglas-fir zones and fires that replace the whole stand rare. Its main biogeoclimatic zone is Interior Douglas-fir (100%). In the dry forest and grassland of NDT4, a century of putting fires out has let many stands fill in, building up fuel that can carry a crown fire instead of a light surface fire. This is how the land burned before fires were put out, not its fire risk today. A report names the type over a lot. Every place's natural fire regime.

Source: BEC Map (biogeoclimatic zones and natural disturbance types), Province of BC (Open Government Licence – British Columbia), read 2026-10-12; areas worked out on the census boundaries.

Evacuations since April 2017

Since April 2017, the Province's record holds 3 wildfire events with an evacuation order or alert over Chase, 1 with an order. The latest order: East Adams Lake Wildfire, August 2023.

1. 2023East Adams Lake WildfireAugust 2023 · evacuation order · Village of Chase1 home
2. 2023Bush Creek East WildfireAugust 2023 · evacuation alert · Village of Chase1,092 homes
3. 2021White Rock Lake WildfireAugust 2021 · evacuation alert · Village of Chase1,092 homes

Listed when an order or alert area covered at least 5% of the land in Chase, or lay mostly in Chase and held at least 5% as many homes as the 2021 census counted there. An order means people were told to leave; an alert, to be ready to leave. Homes are the record's own counts, area by area, shown where the areas lie mostly in Chase. The Province's record starts in April 2017: earlier evacuations aren't in it. A lot's report checks every order and alert over the lot itself, and any in effect now.

Sources: Historical Orders and Alerts, Emergency Management and Climate Readiness (Open Government Licence – British Columbia), as published on November 2, 2026; 2021 census subdivision boundaries and dwelling counts, Statistics Canada (Statistics Canada Open Licence). Each order and alert area placed in the municipalities and electoral areas it covers by us.

Evacuations for floods, landslides and other hazards since April 2017

None of the flood, landslide or other non-fire evacuation orders or alerts in the Province's record since April 2017 covered 5% or more of the land or homes in Chase.

Sources: Historical Orders and Alerts, Emergency Management and Climate Readiness (Open Government Licence – British Columbia), as published on November 2, 2026; 2021 census subdivision boundaries and dwelling counts, Statistics Canada (Statistics Canada Open Licence). Each order and alert area placed in the municipalities and electoral areas it covers by us.

No landslides are recorded inside Chase in the Preliminary Canadian Landslide Database (version 14.0). No record doesn't mean stable ground. The database lists slides known to have happened, mapped from inventories, satellite images and lidar. It isn't a hazard map, and some parts of BC are mapped in far more detail than others. Landslides near a given lot.

The Province maps about 3.4 km of dikes in Chase, along Chase Creek; the longest is the Chase Creek dike. A dike lowers the chance of a flood behind it, not to nothing; a report names the dikes within 1 km of a lot and who maintains them. Dikes in BC, by place.

One Water Survey of Canada gauge in Chase has 5 or more years of yearly peak flows: Chase Creek above the Mouth peaked highest at 48.6 m³/s in 2017 (24 years on record). That set its record in the last 10 years. A gauge's record is the river where it stands, not a flood line; a report gives the nearest gauge on a river by the lot. River gauges in BC, by place.

Radon

In the Thompson Cariboo Shuswap health region, 7 of the 109 homes tested (6.4%) in Health Canada's 2009–2011 survey were at or above the 200 Bq/m³ guideline; across BC, 143 of 1,817 (7.9%).

The survey tested about a hundred volunteer homes per health region, with one long-term test each. That gives a rough regional picture: it isn't a map, and a region where few or none tested high can still have homes above the guideline. The only way to know is to test the home: radon and buying a home in BC.

Source: Cross-Canada Survey of Radon Concentrations in Homes (2009–2011), Health Canada (Open Government Licence – Canada); Health Service Delivery Area Boundaries, Province of BC (Open Government Licence – British Columbia).

Check one lot: has it burned? · is it on a floodplain map? · is it behind a dike? · is there a dam nearby? · landslides nearby? · contaminated sites nearby? · radon? · how much is too steep?

Source: Agricultural Land Reserve polygons, Agricultural Land Commission (Open Government Licence – British Columbia); Fire perimeters – historical, BC Wildfire Service (Open Government Licence – British Columbia); Mineral, placer and coal tenures, Mineral Titles Branch (Open Government Licence – British Columbia); Preliminary Canadian Landslide Database, version 14.0 (May 2026), Brideau et al. (CC BY 4.0); 2021 census subdivision boundaries, Statistics Canada (Statistics Canada Open Licence); Municipalities – Legally Defined Administrative Areas of BC (names and status), Province of BC (Open Government Licence – British Columbia).

Mapped aquifers

One mapped aquifer lies in Chase.

1. 1Aquifer 236: Chaseunconfined sand and gravel (medium stream system)39 wells · moderate productivity

An aquifer is listed for each place that holds at least a twentieth of it, so a sliver of one at the edge can be left out. Wells and productivity are for the whole aquifer, which can reach well beyond Chase. The province maps aquifers mostly in settled valleys, so a lot outside every outline can still have groundwater. Every mapped aquifer in BC · sampled lakes.

Sampled lakes

No lake in Chase has clarity or nutrient readings in the province's monitoring records.

A lake is listed for each place that holds at least a twentieth of it or 100 ha of it. Clarity is the median summer Secchi depth; the nutrient class is our reading of Carlson's index from phosphorus or chlorophyll, not a provincial rating. Either is given only for a lake with at least 10 summer readings from open water, spread over at least 3 different years, since 2012. Most lakes have never been sampled, so a lake missing here may simply have no record. Every sampled lake in BC.

Source: Groundwater wells (GWELLS), Province of BC (Open Government Licence – British Columbia); Ground Water Aquifers, Water Protection and Sustainability Branch, Province of BC (Open Government Licence – British Columbia); BC Environmental Monitoring Data System (EnMoDS) results, Province of BC (Open Government Licence – British Columbia); 2021 census subdivision boundaries, Statistics Canada (Statistics Canada Open Licence).

Normals for 1981-2010 at the Celista station, about 26 km from the town centre; ECCC has no fuller 1991-2020 set for it. Its normals don't include the frost-free period, days with snow on the ground, days over 30 °C or degree days, so those are left out. * Based on at least 15 of the 30 years, short of the World Meteorological Organization's standard: treat as a rougher guide. The records are single days measured at the station: the most rain, snow and wind it saw in its record up to 2010 (ECCC's 1981-2010 sets give records over the station's whole history, so some dates are older than 1981). Each is one event, not what to expect in a year, and the lot can get more or less than the station. Elevation matters a lot in BC: a hillside lot can be much colder and snowier than the station. We don't set this station's figures against other places: it's more than 15 km from the place.

Plant hardiness zone: most homes here are in zone 6a (84%); 16% are in 6b, on Natural Resources Canada's 2025 map. Higher numbers are milder winters. What the zones mean.

Solar panels: a south-facing panel tilted at the latitude would make about 990 kWh a year for each kW of panels at Chase's town centre, about 33 of it in December (estimated from Natural Resources Canada's 1998-2022 sunshine map). An open sky is assumed: the hills, trees and buildings around a lot cut it, and a report sets the lot's own skyline beside it. What solar panels would make in BC.

By the 2050s (2041-2070) at the town centre, climate models project about 19 more days over 30 °C a year, a longest frost-free run about 40 days longer and about 12 percentage points less of winter's precipitation falling as snow, each against the same models' 1971-2000 (model projections under SSP2-4.5, a middle path for emissions). The models work on a grid of about 9 by 6 km, which averages valley floors with the slopes around them, so their own figures can sit well off a station's normals and aren't comparable with them. Their own figures there: about 37 days over 30 °C a year in 2041-2070 (range 31 to 59 across the models), against about 18 days in 1971-2000; a longest frost-free run of about 185 days (range 160 to 210), against about 145; and about 66% of winter's precipitation falling as snow (range 56% to 70%), against about 78%. The ranges run from the 10th to the 90th percentile of the models' 2041-2070 figures. The 2050s across BC.

Light at night within 1 km of Chase's town centre: like a small town such as Gibsons, Sooke or Valemount (our reading), and darker than about 75% of BC's homes (2024 satellite record). A lot away from the centre can be much darker. How dark are BC's nights?

Lightning: around Chase's town centre, a cloud-to-ground flash within 10 km on about 8 days a year and 0.18 flashes per km² a year, more than at 3 in 4 BC homes (the Canadian Lightning Detection Network, 1998-2025 average, on a grid of about 11 by 7 km).

Source: Canadian Climate Normals 1991-2020 and 1981-2010, Environment and Climate Change Canada (Open Government Licence – Canada); Plant hardiness zones of Canada (2025 map), Natural Resources Canada (Open Government Licence – Canada); Medium Resolution Digital Elevation Model (MRDEM-30), Natural Resources Canada (Open Government Licence – Canada); Solar position: General Solar Position Calculations (NOAA Global Monitoring Laboratory; Spencer, 1971) (Public domain); Daily average solar irradiance on tilted surfaces for all of Canada (1998-2022), Natural Resources Canada (Open Government Licence – Canada); Photovoltaic Potential and Solar Resource Maps of Canada (performance ratio), Natural Resources Canada (Open Government Licence – Canada); Statistically downscaled climate indices from CMIP6 global climate models (CanDCS-M6), Environment and Climate Change Canada and the Pacific Climate Impacts Consortium, via the Canadian Centre for Climate Services (Open Government Licence – Canada); VIIRS Nighttime Lights, 2024 annual composite, Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines (Elvidge et al. 2021, Remote Sensing 13(5):922), via Hengl, OpenGeoHub, Zenodo doi 10.5281/zenodo.7750174 (CC BY 4.0); Canadian Lightning Detection Network cloud-to-ground flashes (CanCPLDv1), Environment and Climate Change Canada (Open Government Licence – Canada).

Census figures are from 2021; the next census results start in 2027. Area boundaries are Statistics Canada's census subdivisions, which follow municipal and electoral area lines.

Source: Census of Population 2021, Statistics Canada (Statistics Canada Open Licence).