
In numbers.
18m³/s
Average flow
estimate
May–Jun
Best months
248m
Elevation
The water at Ashlu Falls, month by month
It roars from May to June.
The fullest months: from May to June, with the snowmelt. The thinnest: February and from August to September.
- 12 m³/sJan
- 9.3 m³/sFeb
- 13 m³/sMar
- 17 m³/sApr
- 28 m³/sMay
- 24 m³/sJun
- 13 m³/sJul
- 7.8 m³/sAug
- 8.8 m³/sSep
- 14 m³/sOct
- 19 m³/sNov
- 14 m³/sDec
From about 7.8 m³/s in the lowest month to 28 m³/s in the highest. Best months to go, with plenty of water and pleasant days: from May to June.
Estimate: the timing comes from rain, snowmelt and evaporation (NASA POWER, 1991–2020); the amounts from the river model of HydroATLAS (WaterGAP, 1971–2000). Dams upstream can change the real flow.
Getting there.
- Parking 2,400 m awaynearest car park in OpenStreetMap, straight line
- Powell River Airport (YPW)nearest airport with scheduled flights · 83 km in a straight lineCar hire at YVR airport (Vancouver)Discover Cars · Affiliate link↗
- From May to Junebest months to go (estimate)
Plan your visit
Stay, explore and get there
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
Seen from the sky.
8 × 8 km of cloud-free satellite image, with what OpenStreetMap knows around the falls.
N
2 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 8 × 8 km, north up. Points © OpenStreetMap contributors.
The line follows the river as mapped in OpenStreetMap; heights from the 30 m Copernicus model, which smooths narrow drops — the published height of the falls is the one above.
Around the falls the river drops 84 m in 3.4 km. Here the river runs about 232 m below the lower rim of its valley.
What is around.
- —viewpoints
- —waymarked walking routes
- 1car parks
- —swimming spots
- —picnic sites
- —toilets
- —information boards and visitor centres
- —bus stops within 1 km
- —other named waterfalls within 4 km
- —caves
- 3campsitesHigh Falls (5.5km) Recreation Site, Ashlu Island, Squamish Riverside Campground
- —hotels, B&Bs and huts within 6 km
- —restaurants and cafés within 3 km
Counted in OpenStreetMap, the map anyone can edit, up to 2 km around the falls (unless noted). A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Weather
The weather, month by month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon °C | 4 | 4 | 6 | 8 | 14 | 20 | 25 | 24 | 20 | 13 | 6 | 3 |
| Night °C | -2 | -4 | -1 | 2 | 7 | 12 | 15 | 15 | 11 | 6 | 1 | -3 |
| Rain & snow (mm) | 264 | 138 | 214 | 121 | 88 | 89 | 56 | 66 | 116 | 205 | 293 | 243 |
| Wet days | 20 | 16 | 20 | 17 | 15 | 17 | 12 | 10 | 12 | 18 | 20 | 20 |
| Sun h/day | 1.7 | 3.8 | 3.8 | 5.8 | 7.7 | 6.9 | 8.9 | 8.4 | 6.0 | 3.6 | 1.7 | 1.5 |
| Snow on the ground (cm) | 147 | 174 | 193 | 165 | 55 | 3 | 0 | 0 | 2 | 11 | 36 | 93 |
Long-term averages 1991–2020 (NASA POWER) for a cell about 55 km wide, with temperatures carried to the height of the falls (248 m) at −6.5 °C per 1,000 m. Not a forecast.
Recent years
Wet years and dry years
Rain of each month as a share of the 1991–2020 average. A wet season above 100 % usually means a fuller waterfall.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 168% | 98% | 55% | 45% | 109% | 143% | 112% | 126% | 124% | 100% | 97% | 94% |
| 2021 | 104% | 92% | 71% | 54% | 79% | 81% | 32% | 86% | 187% | 143% | 143% | 90% |
| 2022 | 87% | 58% | 66% | 125% | 168% | 136% | 89% | 62% | 33% | 58% | 41% | 87% |
| 2023 | 64% | 120% | 40% | 137% | 60% | 78% | 92% | 86% | 87% | 74% | 57% | 106% |
| 2024 | 108% | 104% | 70% | 93% | 115% | 130% | 49% | 171% | 79% | 118% | 74% | 98% |
| 2025 | 19% | 81% | 114% | 61% | 106% | 57% | 123% | 152% | 115% | 102% | 74% | 154% |
130% wetter than usual 70% drier than usual
Compare with the waterfalls nearby.
About these numbers
| Names, height, width, river | Wikidata (Q37691) · CC0 |
|---|---|
| River flow and catchment | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| Climate | NASA POWER, 1991–2020 |
| Relief, river profile, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Paths, viewpoints, parking | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
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Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.



