Papoose Lake
Lake · 10,354 ft · Mammoth Lakes corridor
Papoose Lake sits at 10,354 feet in the Mammoth Lakes corridor, a high-Sierra alpine water cradled by granite ridges. Snow-fed and wind-exposed, it demands timing.
Wind funnels down the drainage by mid-afternoon on most days; mornings are calmer. The 30-day average wind of 14 mph masks gusts exceeding 40 mph late in the day. Cold water, thin air, and avalanche terrain above the inlet make this a place for deliberate planning, not casual drop-ins.
Over the last 30 days, Papoose Lake averaged 14 mph wind with a low NoGo Score of 6 and a high of 65, reflecting the volatility of spring in the high Sierra. Temperatures average 23 degrees Fahrenheit. The week ahead will show whether calm mornings persist or if strengthening afternoon thermals push conditions tighter. Check the rolling stats before committing to a weekend trip.
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About Papoose Lake
Papoose Lake is a small alpine lake on the east slope of the Sierra Nevada, accessible from the Mammoth Lakes area via backpacking or day-hike routes. The lake sits above 10,000 feet and drains north into the Bishop Creek watershed. Most visitors approach from Highway 395 near Mammoth; the nearest trailhead is accessed via Mammoth Lakes village roads or the Highway 203 corridor to Lakes Basin. From the town of Mammoth, drive time to the trailhead is roughly 30 to 45 minutes depending on which drainage you're entering. Snow closure and avalanche risk control access until late spring or early summer in most years.
Papoose Lake experiences intense seasonal swings typical of the high Sierra. Winter snowpack averages above 6 to 7 feet; the lake remains fully frozen into late May or June. Spring warming triggers avalanche hazard in the steep gullies and couloirs above the inlet; these slopes require careful assessment before travel. Summer and early fall bring the most stable conditions, though afternoon wind remains the defining characteristic. The 30-day rolling average wind of 14 mph is sustained; gusts of 40+ mph are routine by 2 or 3 p.m. Crowding averages low (4 out of 10) year-round, reflecting the lake's modest popularity and access difficulty.
This lake suits experienced backpackers comfortable with cold water, exposed weather, and avalanche terrain. Day-hiking is feasible in summer, but the high elevation and wind demand an early start and descent before conditions deteriorate. Fishing can be worthwhile, though the season is short. Paddlers should treat the afternoon wind as a hard constraint; any water activity must conclude by early afternoon. Parties planning overnight trips should carry adequate insulation and be prepared to shelter in place if weather shifts. The combination of high altitude (10,354 feet), minimal tree cover, and exposure to westerly flow makes this a place where afternoon conditions can change rapidly and severely.
Nearby alternatives include the lower-elevation Bishop Creek Lakes and the slightly more sheltered tarns in the Piute Pass drainage, both of which offer similar access but reduced wind exposure and longer seasons. For a more popular alpine lake experience with better services, Crater Lake or Palisade Lake offer similar elevation but lie on different ridgelines. Visitors pairing Papoose Lake with another destination should account for the upper-basin approach and avalanche-terrain crossings; routes are not necessarily safe just because they are marked or popular.