As of today, October 23, 2026, both reservoirs remain extremely low:
|
Reservoir |
Elevation |
Storage |
Full-pool deficit |
|
Lake Mead |
1,037.2 ft above sea level |
about 6.78 million acre-feet, or 26.0% full |
191.8 ft below its 1,229 ft full-pool level |
|
Lake Powell |
about 3,523.6 ft above sea level |
about 5.46 million acre-feet, or 23.4% full |
176.4 ft below its 3,700 ft full-pool level |
Lake Mead’s latest daily reading is 1,037.2 ft, essentially unchanged from the prior day and near its record low; it is about 20.5 ft lower than a year ago. [1][2][3] Lake Powell has risen slightly over the past two weeks—up about 4.6 ft—but is still roughly 22 ft below its level a year ago and only about 34 ft above its minimum power-pool elevation. [4]
Context
Together, Mead and Powell held roughly 12.1 million acre-feet in late October—about 24–25% of their combined capacity. [5][2] The low levels reflect persistent drought, weak Colorado River runoff, and management actions intended to stabilize Lake Powell, including reduced releases downstream and supplemental releases from Flaming Gorge. [6]
For reference, Lake Mead remains above the 950 ft minimum power-pool threshold, while Lake Powell is above its 3,490 ft power-pool threshold but has limited buffer. [4]
⁂
Did the recent rains in the Las Vegas area affect lake levels
Only marginally. The heavy rain from Tropical Storm Rachel (October 9–11) sent runoff through Las Vegas flood-control channels toward Lake Mead, but it produced only about a 0.1-foot rise in the reservoir—effectively negligible against its roughly 192-foot deficit from full pool.[11][12]
Why the effect was small
- Las Vegas recorded about 1.08 inches of rain on October 11, tying its wettest October day on record; some runoff flowed through the washes, storm drains, and detention basins toward Lake Mead.[12][13][14]
- Lake Mead is a huge reservoir, and its level is governed overwhelmingly by Colorado River inflows and releases from Glen Canyon Dam, not by local Las Vegas rainfall.[14][15]
- In the days after the storm, Lake Mead remained at about 26% capacity and near 1,037.7–1,037.8 ft; it subsequently set another record low on October 15, showing that the rain did not reverse the decline.[15][16][11]
The indirect benefit
The more meaningful effect was reduced downstream demand: rain in southern Nevada, eastern California, and western Arizona reduced irrigation needs, allowing less water to be released from Hoover Dam. That can slow Mead’s decline more than the direct runoff adds to it.[17][14]
For a lasting rebound, the decisive factor remains Rocky Mountain snowpack and spring snowmelt, which feed Lake Powell and then Lake Mead—not isolated desert rainstorms.[11][14]
⁂
- https://mead.uslakes.info/Level/Calendar/2026/10/
- https://reservoirbench.com/colorado-river/
- https://www.lakeprojections.com/lake-mead/water-level
- https://lakepowell.water-data.com/
- https://reservoirs.earth/the-reservoir
- https://www.sciencedaily.com/releases/2026/09/260922005701.htm
- https://www.worldatlas.com/lakes/lake-mead-lost-192-feet-lake-powell-lost-179.html
- https://www.kentucky.com/opinion/us-viewpoints/article317743662.html
- https://ground.news/article/lake-mead-plunges-to-historic-low-as-water-levels-continue-to-fall_e5b624
- https://www.desertusa.com/riverinfo/c_river.html
- https://news3lv.com/news/local/tropical-storm-rachel-drenches-southern-nevada-but-barely-boosts-lake-mead-levels
- https://homesforsaleinmesquitenevada.com/news/tropical-storm-rachel-remnants-mesquite-flooding-october-2026
- https://forecast.weather.gov/product.php?site=NWS&product=PNS&issuedby=VEF
- https://news3lv.com/news/local/where-does-las-vegas-rainwater-go-after-a-tropical-storm
- https://www.kiowacountypress.net/content/lake-powell-three-feet-lake-mead-keeps-setting-record-lows-what-pacific-storms-did-and-did
- https://en.wikipedia.org/wiki/Lake_Mead
- https://www.reviewjournal.com/local/local-nevada/did-hilary-give-lake-mead-a-big-boost-not-exactly-2892522/
- https://www.ktnv.com/news/las-vegas-valley-under-flood-watch-as-tropical-storm-rachel-takes-aim-at-us-southwest
- https://wisevoter.com/world/us/nv/las-vegas/2026/10/14/tropical-storm-rachel-las-vegas
- https://www.sitnas.id/34330/lake-mead-stays-at-26-percent-despite-tropical-storm-rachel
- https://www.weatherusa.net/wxwarnings?id=181038108
- https://mead.uslakes.info/Level/Calendar/2026/10/
- https://www.lakeprojections.com/lake-mead/water-level
- https://forecast.weather.gov/MapClick.php?zoneid=NVZ025
- https://forecast.weather.gov/product.php?site=NWS&product=PFM&issuedby=VEF
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