Yosemite cold‑water warning
Yosemite officials warned visitors about deadly spring water conditions after a child's drowning, noting that 40°F water can trigger cold shock in seconds and the park records roughly 15–20 water rescues each year. (capitalisminstitute.org) Park researchers also reported a record year for peregrine falcon nest sites on Yosemite cliffs, with more nesting activity documented across the park’s towering rock faces. (discoverwildlife.com)
Yosemite is warning spring visitors that its rivers and creeks can turn deadly fast, even when the weather feels warm. (nps.gov) Park officials say Yosemite records 15 to 20 visitor rescues tied directly to people ending up in the water each year, whether by swimming, boating, falling, or slipping on rocks. The National Park Service says water-related accidents are the second most common cause of death in the park. (nps.gov) The danger is not just fast current. Yosemite says mountain water stays extremely cold, and even strong swimmers can lose strength quickly from hypothermia after entering it. (nps.gov) That warning lands as spring runoff changes conditions across the park. In its April 8, 2026 wilderness update, Yosemite said melting snow was weakening snow bridges, all drainages were flowing again, and creek crossings were rising significantly by afternoon. (nps.gov) The park’s safety guidance is blunt about where people get into trouble. A single misstep on a rock above a calm-looking pool can carry someone downstream into hidden hazards such as branches, cables, or narrow gaps between rocks. (nps.gov) Yosemite tells visitors not to swim or wade where signs prohibit it, and to supervise children closely in and around water. The park says some areas, including Emerald Pool above Vernal Fall, are closed because multiple incidents occur there each year. (nps.gov; nps.gov) At the same time, Yosemite’s cliffs are drawing a different kind of spring attention. The park’s raptor protection program says peregrine falcons and golden eagles nest on sheer granite walls, and biologists adjust climbing closures from March 1 through July 15 as nesting activity changes. (nps.gov) Yosemite says its raptor program, created in 2009, has documented 51 new peregrine nests across the park since it began. A March 12, 2025 park update said Yosemite had gone from more than 30 years without nesting peregrines to more than 13 nesting pairs. (nps.gov; nps.gov) Those closures are meant to keep climbers, hikers, and slackliners far enough away that adult birds do not abandon eggs or chicks. Yosemite says peregrines and golden eagles are sensitive to disturbance during breeding season, and the superintendent can close nesting cliffs until chicks have fledged and dispersed. (nps.gov) So the same spring thaw that fills Yosemite’s waterfalls is also reshaping two parts of the park at once: colder, faster water below and more closely watched nesting cliffs above. (nps.gov; nps.gov)
