How low will Lake Mead drop? Polymarket odds
On Polymarket, the favourite is 1,033–1,038 ft, at 8%. That is down 5 points over the past week. The market settles by Apr 15, 2027. Each contract pays $1 if it is right, so 8¢ reads as an 8% chance. Kalshi lists it too, and we compare the two prices below.
Polymarket odds on every outcome
Chance is each outcome's Yes price on Polymarket. A Yes contract at 8¢ pays $1 if that outcome wins.
Polymarket vs Kalshi on this question
The same question on both venues. When the prices differ, the cheaper side costs you less for the same payout.
| Venue | Yes | No | Fee | 24h volume | Liquidity | |
|---|---|---|---|---|---|---|
| PolymarketClose-only for US residents | 6¢cheapest to buy | 94¢ | free | $0 | $331 | Trade → |
| Kalshi$50 bonus | 16¢ | 85¢ | 0.9¢ | $0 | – | Trade → |
How the odds have moved
Polymarket's own series for the outcome the headline prices, from where its history starts; one venue, not a blend.
How this market resolves
Polymarket's own settlement wording, in full. This, not the headline, decides who gets paid.
Show the full rules
This market resolves based on the lowest daily elevation recorded at Lake Mead (Hoover Dam) between market creation and March 31, 2027, as published by the U.S. Bureau of Reclamation. See each individual market for its bracket and full resolution terms.
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.
Scheduled resolution: Apr 15, 2027.
How to trade this market on Polymarket
- Check your state first. A few states restrict some contracts.
- Open a Polymarket account. Americans trade on Polymarket US. Our Polymarket app review covers sign-up and payouts.
- Buy Yes or No at the price shown, 8¢ for 1,033–1,038 ft right now. Each contract pays $1 if you are right.
- Sell any time before it settles, or hold to the result. Polymarket's fees apply to each trade.
CoinStats may earn a commission on links to venues. Prices are indicative and may differ when you trade.
Common questions
What are the Polymarket odds on “How low will Lake Mead drop?”?
On Polymarket, the favourite is 1,033–1,038 ft, at 8%. That is a market-implied probability, not a forecast, and it moves as traders buy and sell.
How does this market resolve?
By Polymarket's own settlement rules for this market. Two venues can word the same question differently and settle differently, so read them before you trade.
Is this question on Kalshi too?
Yes. Our side-by-side page shows both prices and both venues' rules.
Can I trade this market in my state?
In most states, yes, on Polymarket US. A few states have acted against some contracts. Check your state first.
How accurate are Polymarket odds?
Often more accurate than polls, though never certain. A price of 70% should lose three times in ten. How accurate prediction markets are has the research.
What does it cost to trade on Polymarket?
A taker fee on most markets, largest near 50¢, and some categories charge nothing. Polymarket's fees has the detail.