Lake Mead at 28.5% capacity

Colorado River Monitor said on May 24 that Lake Mead was at 28.5% of capacity, a reading that underscored how far the reservoir remains below full pool even after recent years of heavy scrutiny across the Colorado River basin. The site’s Lake Mead page listed current storage at 7.45 million acre-feet and maximum capacity at 26.13 million acre-feet. (coloradorivermonitor.com) The federal Bureau of Reclamation publishes separate Lake Mead elevation and contents data for May 2026 through its Lower Colorado Region operations pages. Reclamation’s daily projection report showed Lake Mead at 1,051.79 feet on May 24, with further declines projected in the following days. (coloradorivermonitor.com) The 28.5% figure is a storage measure, not a forecast for recreation or water deliveries on its own. It is one of the shorthand numbers widely used by lake watchers, boaters and water managers tracking how much water remains in the nation’s largest reservoir by capacity. (coloradorivermonitor.com) ### How low is 28.5% in practical terms? Colorado River Monitor’s May 24 page paired the 28.5% figure with 7.45 million acre-feet of storage, compared with a stated maximum of 26.13 million acre-feet. The same page labeled 40% as a warning level and 25% as a critical level. (usbr.gov) The Bureau of Reclamation’s Lake Mead data pages track the same reservoir in elevation and contents terms rather than the simplified percentage displayed by third-party monitors. Reclamation’s Lower Colorado Region pages are updated regularly and are the underlying federal reference point for current reservoir conditions. (coloradorivermonitor.com) ### Why are boaters and paddlers watching shoreline access so closely? The National Park Service said in its Lake Mead National Recreation Area conditions page that declining water levels have reshaped shorelines and made extending launch ramps more difficult and more expensive because of the area’s topography and projected water-level decline. (coloradorivermonitor.com) The agency urged visitors to check current conditions and alerts before heading out. Hemenway Harbor, one of the lake’s main access points near Las Vegas, has already been the focus of ramp-extension work tied to lower water. (usbr.gov) A boating information page for Lake Mead said construction to extend the Hemenway Harbor launch ramp began in June 2025 and was intended to support continued public access as water levels change. ### Does 28.5% mean new shortage rules took effect on May 24? May 24’s reading does not by itself trigger a new public rule on that date. The Bureau of Reclamation manages Lake Mead operations through separate shortage guidelines, monthly studies and projected operations documents for the Lower Colorado River system. (nps.gov) Reclamation’s operations pages include 24-month studies, daily elevation projections and longer-range system projections for Lake Mead and Lake Powell. Those documents, rather than a single day’s percentage reading, are the formal basis for operational planning. (boatinglakemead.com) ### Why does the number change depending on which page you check? Colorado River Monitor presents Lake Mead as a percentage of capacity and lists acre-feet totals on a consumer-facing dashboard. Reclamation publishes reservoir contents, elevations and operations tables directly from the federal system. (usbr.gov) A reader can see both figures as snapshots of the same reservoir from different angles: one emphasizes share of total storage, and the other emphasizes elevation and operational data. The federal pages also note that some reports are updated hourly or daily, while Colorado River Monitor says its Lake Mead page is updated daily. (usbr.gov) ### Where should readers look next? Colorado River Monitor says its Lake Mead gauge updates daily on the reservoir page that carried the 28.5% reading on May 24. Reclamation’s Lower Colorado Region site also posts current month reservoir data, daily elevation projections and longer-term studies for Lake Mead operations. (coloradorivermonitor.com)