The lake the dam made
Lake Mead is the largest US reservoir by capacity, formed by Hoover Dam on the Colorado River in the 1930s, straddling Nevada and Arizona and supplying water across the Southwest — and the centerpiece of America's first national recreation area, as the Park Service's official film frames it: in one of the world's driest deserts, at the edge of a sprawling urban center, a preserve of land and water endures. The orientation guides catalogue the visitor's lake: marinas, beaches, fishing, boat tours (top-10 format, 2023; a family guide, 2022, entry fees shown on screen as filmed).
The water level, as filmed
This page dates its lake levels rather than implying them: the 2022 cruise film from Las Vegas Boat Harbor — feeding the famous fish and birds at the dock — states the condition plainly as filmed in 2022: about 1,043 feet above sea level, roughly 30 percent full, historic lows since the lake filled in the 1930s. A local's first lake day the same year notes the waterline walk to the boat 'gets farther every day.' The lake's level moves with the Colorado's management and the seasons; the films are the record of their moments, and the boating film from November 2025 — a cross-country boater towing his 22-foot Grady White from Key West to British Columbia — gives the current on-the-water verdict.
Trails, springs and a glowing cave
The Historic Railroad Trail hikes the path the railroads used to haul supplies and cement to build Hoover Dam — through its tunnels to the dam overlooks, heat warnings taken seriously (pair it with our Hoover Dam page). The Arizona Hot Springs hike (2020) descends a slot canyon from a Boulder Beach basecamp to riverside hot springs. And the kayaking film paddles the Black Canyon Water Trail from Willow Beach to Emerald Cave, the green-glowing grotto below the lake — the recreation area's quietest famous photograph, reached only by water.
Sources: the nine videos on this page — the NPS portrait, two orientation guides, a first lake day, a harbor cruise, a boating visit, the Railroad Trail hike, a hot springs hike, and an Emerald Cave paddle — summarized from their entries in our catalog.
Watch: Lake Mead, guided
3 videos · summaries from the actual guidesMore Las Vegas essentials
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