
moderate
2 days
Moderate fitness—comfortable with multi-hour paddling, short hikes, and scrambling; not technical but endurance helps
Launch from the restricted base of Hoover Dam and paddle 11 river miles to geothermal hot springs, steam-filled caves and Boyscout Slot Canyon on a guided 2-day camping trip. Expect ladder climbs, warm soaking pools, and guided camping with meals included.
The river announces itself before the dam does — a low, metallic roar that becomes a current you can lean into and trust. At dawn, guides lower single and tandem kayaks into the Colorado’s churn below Hoover Dam and the canyon narrows around the group, cliffs angling in like pages of a giant ledger. Paddles bite and the flow carries you downstream toward pockets of steam and stone: Sauna Cave, Goldstrike Hot Springs, Boyscout Slot Canyon and the luminous Emerald Cave. The river pulls; the canyons respond.

Desert heat and river exertion add up; drink plenty of water the day before and bring at least 2–3 liters in a hydration pack each day.
Geothermal pools can be extremely hot; enter gradually and avoid pools that steam aggressively or feel scalding.
Expect wet, rocky approaches and a ladder climb through a waterfall—closed-toe shoes with good tread are necessary.
Use a dry bag for phones and cameras; the river and waterfalls produce unexpected spray during transfers and shore exits.
The river corridor was historically used by Indigenous peoples and later became a strategic engineering zone with construction of Hoover Dam; current access is regulated for safety and conservation.
Guides operate under National Park Service permits and emphasize pack-in/pack-out camping, limiting thermal pool impact, and respecting fragile canyon vegetation.
Keeps you hydrated during long paddle stretches and hot-spring soaks.
summer specific
Protects feet on slippery shorelines and during ladder/waterfall approaches.
Provides warmth for desert nights if you choose personal gear over outfitter sleep system.
spring specific
Keeps gear dry from river spray and provides an insulating layer for cool mornings.
fall specific