Recent low snowpack and runoff in the Colorado River Basin have driven Lake Powell’s elevation to around 3,520 feet by mid-August 2026, with Bureau of Reclamation projections showing end-of-water-year levels near 3,516 feet under the most probable inflow scenario. Trader sentiment remains closely balanced because unregulated inflows are forecast at just 52% of average, while outflows continue to exceed inflows amid persistent drought and high evaporative losses. Differentiation among the 3,510–3,490-foot bands hinges on remaining summer precipitation, temperature-driven evaporation rates, and any adjustments to Glen Canyon Dam releases before the September low point. Uncertainty in these variables, rather than model consensus, sustains the tight odds between staying above 3,510 feet and dropping below 3,490 feet.
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?
3,500–3,510 ft 32%
3,490–3,500 ft 27%
Above 3,510 ft 0
Below 3,490 ft 0
Above 3,510 ft
45%
3,500–3,510 ft
32%
3,490–3,500 ft
27%
Below 3,490 ft
58%
3,500–3,510 ft 32%
3,490–3,500 ft 27%
Above 3,510 ft 0
Below 3,490 ft 0
Above 3,510 ft
45%
3,500–3,510 ft
32%
3,490–3,500 ft
27%
Below 3,490 ft
58%
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...Recent low snowpack and runoff in the Colorado River Basin have driven Lake Powell’s elevation to around 3,520 feet by mid-August 2026, with Bureau of Reclamation projections showing end-of-water-year levels near 3,516 feet under the most probable inflow scenario. Trader sentiment remains closely balanced because unregulated inflows are forecast at just 52% of average, while outflows continue to exceed inflows amid persistent drought and high evaporative losses. Differentiation among the 3,510–3,490-foot bands hinges on remaining summer precipitation, temperature-driven evaporation rates, and any adjustments to Glen Canyon Dam releases before the September low point. Uncertainty in these variables, rather than model consensus, sustains the tight odds between staying above 3,510 feet and dropping below 3,490 feet.
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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