Mammoth Mountain, in California, United States, runs from 2,424 m at the base to 3,369 m at the top. The map shows 154 marked runs and 28 lifts (about 86 km of piste in all).
Over the last twelve winters the ERA5 weather model gives it 486 cm of snowfall a season, 87th (tied) of 3,069 worldwide and 19th in the United States. It swings a lot from year to year: the biggest winter, 2022/23 (1,254 cm), brought more than 14 times as much as the leanest, 2014/15 (87 cm). March still brings 124 cm on average, close to January, its snowiest month.
The nearest city of any size is Fresno, about 118 km away. Below is a link to its official live camera.
Snow depth and the seven-day outlook appear here once snow starts to fall. Until then, the long-run record comes first.
We do not show a snow depth here. The weather model we use reports snow lying on the ground — it knows nothing about grooming or snowmaking, and it is not the base depth a ski area publishes. In Japan we can check our figures against 234 weather stations. Outside Japan there is nothing to check them against, so we do not print a number we have not verified. Snow report on the official site ↗
How much snow it gets
Measured by us across 3,069 ski areas by one identical method. These are not the resort’s own published figures.
Compared with what is nearby
Within 50 km straight line. Measured the same way, so the ranks compare directly. Ski areas a few kilometres apart share a weather grid cell and can return the same figure.
| Ski area | Distance | Seasonal snowfall | World rank |
|---|---|---|---|
| June Mountain | 14 km | 463 cm | 103 |
| China Peak Mountain Resort | 46 km | 409 cm | 163 |
When it falls, and how winters differ
Month by month
Month by month, the most snow falls in January. March brings 95% of January’s snowfall. That is a gentler fall than the median for ski areas in the United States (85%). In amount, March brings 124 cm, more than the median of 30 cm.
Winter by winter
Across the 12 winters measured, the average is 486 cm, and 9 of them fell short of it. The leanest was 2014/15 with 87 cm; the biggest was 2022/23 with 1,254 cm (14.4 times as much). For 33% of the 534 ski areas in the United States, the leanest winter was the same 2014/15: bad winters tend to hit a whole region at once.
Snowfall each winter (December–March total). The dashed line is the average; the numbers mark the leanest and the biggest winter.
Runs and lifts
Counted from the runs and lifts drawn on OpenStreetMap, within the boundary of the ski area. These are not the resort’s own published figures.
Run map
The shape of the mountain
Which way the slopes face
87% of the vertical on the runs descends to the north or east. Those slopes get the least sun, so the snow lasts longer.
By difficulty
Lift types
- Chairlift22
- Gondola3
- Magic carpet2
- Platter1
See past trail maps on Skimap.org ↗
Source: OpenSkiMap (© OpenStreetMap contributors, ODbL 1.0). How finely ski areas are drawn varies by region, so treat the counts as indicative. Vertical is the difference between the highest and lowest points of the mapped runs and lifts.
Live Cameras
This ski area does not put a camera on its own slopes. What follows are nearby cameras, not the pistes themselves.
Road conditions decide whether you can get there at all. Check before you leave.
Footage remains the copyright of each operator. JAPANSNOWLINE neither stores nor redistributes it.
Some cameras here are provided by Windy.com. Footage plays in Windy’s own player; we do not store it. Windy.com
Map
Where it sits relative to nearby resorts. For a piste map, see the official site.
Official piste map ↗More places to look
Guides covering United States
- Which Famous Ski Resorts Actually Get the Most Snow? 24 Names, Measured Niseko is 526th in the world for snowfall. Zermatt is 554th, Jackson Hole 924th, Aspen 1,201st. Measured identically across 3,069 ski areas, the names everyone books and the places it actually snows turn out to be two different lists.
- A Black Run in Colorado and a Black Run in Austria Are Not the Same Thing. The Maps Prove It. Across 2,888 ski areas: 39% of American runs are graded advanced or harder, and 9% of Austrian ones. Nobody thinks Austria is four times gentler. The grades are measuring different things.
- Niseko vs Whistler: Whistler Is the Outlier, Vail Is the Rule Whistler is the world's 29th snowiest ski area. Vail is 1,335th — and 288 Japanese ski areas get more snow than the resort that defines American skiing.
Updated: 8 Oct 2026, 00:52