Will Lake Mead's minimum elevation stay above 1,038 ft? Odds and prices
"Will Lake Mead's minimum elevation stay above 1,038 ft" is priced at 4% on Polymarket and 16% on Kalshi, 12 points apart: the venues disagree, so 10% is their average, not a consensus. The contract settles by Apr 15, 2027; each venue words its settlement rules itself, compared below.
This question on Polymarket and Kalshi.
Odds by venue
| Venue | Yes | No | Fee | 24h volume | Liquidity | |
|---|---|---|---|---|---|---|
| PolymarketClose-only for US residents | 4¢cheapest to buy | 96¢ | free | $0 | $272 | Trade → |
| Kalshi$50 bonus | 16¢ | 85¢ | 0.9¢ | $0 | – | Trade → |
How the odds have moved
One venue's series for the result the headline prices, not a blend; venues tick at different cadences and interpolating one onto the other would invent points.
What the market is actually pricing
Venues word settlement differently for the same question, and the difference decides who gets paid. This is the comparison no venue publishes about its rivals.
This market resolves "Yes" if the lowest daily elevation recorded at Lake Mead (Hoover Dam, USBR site) between market creation and March 31, 2027 does not fall below 1,038.00 feet.
Full settlement wording
This market resolves "Yes" if the lowest daily elevation recorded at Lake Mead (Hoover Dam, USBR site) between market creation and March 31, 2027 does not fall below 1,038.00 feet. Otherwise, this market resolves "No."
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.
If Lake Mead's end-of-month water elevation at Hoover Dam for Dec 2026 is strictly greater than 1038 feet, then the market resolves to Yes.
Where you can trade this
The Trade links in the tables above open each venue's own market. The reviews cover sign-up, funding and payouts.
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Common questions
What are the odds on "Will Lake Mead's minimum elevation stay above 1,038 ft"?
The venues disagree: 4% on Polymarket and 16% on Kalshi. The 10% shown is their average; the gap often comes from settlement rules worded differently, compared on this page.
Where can I trade "Will Lake Mead's minimum elevation stay above 1,038 ft"?
On Polymarket and Kalshi. Availability by state varies for sports contracts; see the legal pages.
Why do the venues show different prices?
Different traders, different fees, and different settlement wording. The gap is the reason this page exists; the cheaper side is marked in the table.