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How low will Lake Powell drop?

icon for How low will Lake Powell drop?

How 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%

Polymarket
NEW

Above 3,510 ft 44%

3,500–3,510 ft 25%

3,490–3,500 ft 21%

Below 3,490 ft 14%

Polymarket
NEW

Above 3,510 ft

$1,375 Vol.

44%

3,500–3,510 ft

$1,190 Vol.

25%

3,490–3,500 ft

$305 Vol.

21%

Below 3,490 ft

$444 Vol.

14%

This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 does not fall below 3,510.00 feet. Otherwise, this market resolves "No." 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.This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 falls below 3,510.00 feet but does not fall below 3,500.00 feet. Otherwise, this market resolves "No." 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.This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 falls below 3,500.00 feet but does not fall below 3,490.00 feet. Otherwise, this market resolves "No." 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.This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 falls below 3,490.00 feet. Otherwise, this market resolves "No." For reference, 3,490 feet is the minimum power pool elevation below which Glen Canyon Dam can no longer generate hydroelectric power. 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.**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.

This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 does not fall below 3,510.00 feet. Otherwise, this market resolves "No."

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.
Volume
$3,313
End Date
Apr 15, 2027
Market Opened
Aug 17, 2026, 5:49 PM ET
This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 does not fall below 3,510.00 feet. Otherwise, this market resolves "No." 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.
This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 does not fall below 3,510.00 feet. Otherwise, this market resolves "No." 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.This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 falls below 3,510.00 feet but does not fall below 3,500.00 feet. Otherwise, this market resolves "No." 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.This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 falls below 3,500.00 feet but does not fall below 3,490.00 feet. Otherwise, this market resolves "No." 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.This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 falls below 3,490.00 feet. Otherwise, this market resolves "No." For reference, 3,490 feet is the minimum power pool elevation below which Glen Canyon Dam can no longer generate hydroelectric power. 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.**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.

This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 does not fall below 3,510.00 feet. Otherwise, this market resolves "No."

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.
Volume
$3,313
End Date
Apr 15, 2027
Market Opened
Aug 17, 2026, 5:49 PM ET
This market resolves "Yes" if the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027 does not fall below 3,510.00 feet. Otherwise, this market resolves "No." 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.

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Frequently Asked Questions

"How low will Lake Powell drop?" is a prediction market on Polymarket with 4 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Above 3,510 ft" at 44%, followed by "3,500–3,510 ft" at 25%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 44¢ implies that the market collectively assigns a 44% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"How low will Lake Powell drop?" is a newly created market on Polymarket, launched on Aug 17, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "How low will Lake Powell drop?," browse the 4 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "How low will Lake Powell drop?" is "Above 3,510 ft" at 44%, meaning the market assigns a 44% chance to that outcome. The next closest outcome is "3,500–3,510 ft" at 25%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "How low will Lake Powell drop?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.