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How low will Lake Mead drop?

Openone winner

Selected outcome

Below 1,028 ft

wide spread 14–44%

43%

Below 1,028 ft · 43%

Stored quote · checking the venue

Scheduled end
Apr 15, 2027 ET
Resolution source
data.usbr.gov (opens in a new tab)

Price

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Markets

  • Above 1,038 ft

    Will Lake Mead's minimum elevation stay above 1,038 ft?

    4%

    Open · $0 24h · $4,503 vol

    Bid 1.4¢ · Ask 5.9¢

    Open full market view →
  • 1,033–1,038 ft

    Will Lake Mead's minimum elevation be at least 1,033 but below 1,038 ft?

    8%

    Open · $0 24h · $2,239 vol

    wide spread <1–37%

    Bid 0.3¢ · Ask 37.2¢

    Open full market view →
  • 1,028–1,033 ft

    Will Lake Mead's minimum elevation be at least 1,028 but below 1,033 ft?

    46%

    Open · $0 24h · $6,228 vol

    wide spread 30–77%

    Bid 29.7¢ · Ask 77¢

    Open full market view →
  • Below 1,028 ft

    Will Lake Mead's minimum elevation fall below 1,028 ft?

    43%

    Open · $0 24h · $11k vol

    wide spread 14–44%

    Bid 14¢ · Ask 44¢

    Open full market view →
Event statistics
24h vol
$0
Volume
$23k
Liquidity
$909
Open int.
—

How this resolves

One winner.

Scheduled end
Apr 15, 2027 ET
  1. Trading
  2. Closed
  3. In review
  4. Resolved
Rules text

This market resolves "Yes" if the lowest daily elevation recorded at Lake Mead (Hoover Dam, USBR site) between market creation and March 31, 2027 falls below 1,028.00 feet. Otherwise, this market resolves "No." For reference, 1,025 feet is the threshold below which the Lower Colorado River Basin enters its most severe declared shortage tier (Tier 3). Resolution is determined by the lowest daily elevation recorded at Lake Mead (Hoover 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 Mead at Hoover Dam, available at https://data.usbr.gov/catalog/4370/item/6123. 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://lakemead.water-data.com/ may also be referenced, but if it disagrees with USBR, the USBR value governs. In the case that the Resolution Source publishes data, sufficient to settle a Market, that is clearly erroneous and the result of technical or operational error, or of unauthorized interference with the Resolution Source or its data, the Market may remain open for a period of up to seven (7) calendar days (ET) from the time of the original release, in anticipation of a correction by the Resolution Source. If the Resolution Source publishes a corrected value within that period, that value will be eligible for resolution. If no corrected value is published within that period, Polymarket will issue a Clarification to determine whether the originally published value may be eligible for resolution, or whether other action is required to preserve the orderly functioning of the Market.

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