Sun Valley Ski Resort — Snow Preservation
Matched OpenSkiMap ski area: Sun Valley - Bald Mountain (142 mapped runs, 22575 m of vertical drop analyzed).
Score version: ASPECT_V3_FIXED_COORDS · calculated Sep 27, 2026 · source: OpenSkiMap/OpenStreetMap
| Sun Valley Ski Resort | |
|---|---|
| Snow Preservation Score (0=poor, 100=excellent) |
63 |
| Solar Exposure Score | 37 |
| Overall Confidence | GOOD |
| Aspect advantage ratio (actual ÷ neutral-baseline irradiance) |
0.778 |
| Mean fall-line bearing | 41.6° |
| Orientation alignment (0=scattered, 1=fully consistent) |
0.56 |
| Mean slope (mapped, weighted) | 20.5° |
| Ski-season irradiance actual vs. neutral baseline (kWh/m²/day) |
2.82 vs. 3.62 |
Terrain orientation (vertical-drop-weighted)
Each spoke is a compass direction; length is the share of mapped, snow-holding terrain facing that way. A tall, narrow rose means the mountain consistently faces one direction; a round, even rose means it's scattered across every aspect.