**Low snowpack and resulting meager inflows dominate trader sentiment for Lake Powell's minimum elevation.** The Upper Colorado River Basin recorded one of its lowest snowpacks on record during winter 2025-2026, producing April–July unregulated inflow of only about 18% of average and a full water-year 2026 forecast near 37% of normal (roughly 3.59 million acre-feet). With Lake Powell currently at approximately 3,518.6 feet and 22% capacity, Bureau of Reclamation 24-month studies project a continued decline through early 2027, with the most probable path crossing below 3,510 feet but managed releases from upstream reservoirs providing a buffer. Evaporation losses, low runoff efficiency from warming temperatures, and coordinated operations to protect the 3,490-foot minimum power pool add downward pressure, while an emerging strong El Niño raises the chance of above-average fall/winter precipitation that could limit the drop. The market-implied 43.5% probability above 3,510 feet reflects both the baseline forecast trajectory and uncertainty in near-term precipitation and operational adjustments ahead of the next snowmelt season.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHow low will Lake Powell drop?
Above 3,510 ft 44%
3,500–3,510 ft 25%
3,490–3,500 ft 21%
Below 3,490 ft 14%
Above 3,510 ft
44%
3,500–3,510 ft
25%
3,490–3,500 ft
21%
Below 3,490 ft
14%
Above 3,510 ft 44%
3,500–3,510 ft 25%
3,490–3,500 ft 21%
Below 3,490 ft 14%
Above 3,510 ft
44%
3,500–3,510 ft
25%
3,490–3,500 ft
21%
Below 3,490 ft
14%
Resolution is determined by the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027. Because a lower reading can occur at any point up to March 31, 2027, all outcomes are settled after the window closes, based on the lowest daily elevation recorded during the window.
The resolution source is the minimum daily lake elevation published by the U.S. Bureau of Reclamation for Lake Powell at Glen Canyon Dam, available at https://data.usbr.gov/catalog/2362/item/508. USBR data is provisional and subject to revision; the lowest daily elevation reflected in USBR data as of April 15, 2027 governs, and revisions published after April 15, 2027 will not change the outcome. Daily elevation data published at https://lakepowell.water-data.com/ may also be referenced, but if it disagrees with USBR, the USBR value governs.
Market Opened: Aug 17, 2026, 5:49 PM ET
Resolution Source
https://data.usbr.gov/catalog/2362/item/508Resolver
0x69c47De9D...Resolution is determined by the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027. Because a lower reading can occur at any point up to March 31, 2027, all outcomes are settled after the window closes, based on the lowest daily elevation recorded during the window.
The resolution source is the minimum daily lake elevation published by the U.S. Bureau of Reclamation for Lake Powell at Glen Canyon Dam, available at https://data.usbr.gov/catalog/2362/item/508. USBR data is provisional and subject to revision; the lowest daily elevation reflected in USBR data as of April 15, 2027 governs, and revisions published after April 15, 2027 will not change the outcome. Daily elevation data published at https://lakepowell.water-data.com/ may also be referenced, but if it disagrees with USBR, the USBR value governs.
Resolution Source
https://data.usbr.gov/catalog/2362/item/508Resolver
0x69c47De9D...**Low snowpack and resulting meager inflows dominate trader sentiment for Lake Powell's minimum elevation.** The Upper Colorado River Basin recorded one of its lowest snowpacks on record during winter 2025-2026, producing April–July unregulated inflow of only about 18% of average and a full water-year 2026 forecast near 37% of normal (roughly 3.59 million acre-feet). With Lake Powell currently at approximately 3,518.6 feet and 22% capacity, Bureau of Reclamation 24-month studies project a continued decline through early 2027, with the most probable path crossing below 3,510 feet but managed releases from upstream reservoirs providing a buffer. Evaporation losses, low runoff efficiency from warming temperatures, and coordinated operations to protect the 3,490-foot minimum power pool add downward pressure, while an emerging strong El Niño raises the chance of above-average fall/winter precipitation that could limit the drop. The market-implied 43.5% probability above 3,510 feet reflects both the baseline forecast trajectory and uncertainty in near-term precipitation and operational adjustments ahead of the next snowmelt season.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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