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Sciencecloses in 1mo

How many Chinook will pass Bonneville Dam by October 31?

This market will resolve to "Yes" if "Chinook" Adult Passage Annual Count at Bonneville Dam from January 1, 2026 through October 31, 2026, 11:59 PM ET, exceeds the listed value. Otherwise, this market will resolve to "No". Each market in this event will resolve independently, and any number of these markets, including …

As of 21 de setembro de 2026, "More than 550,000" leads at 88% implied probability (+1.8pp over the last 24h). The biggest 24h move is "More than 600,000", from 49% to 68%. The event has traded $2.8K in total ($68 in the last 24h) with $1.2K of liquidity across 3 markets. Trading is due to close on 4 de novembro de 2026.

24h volume
$68
Total volume
$2.8K
Liquidity
$1.2K
Markets
3
4 de nov. de 2026
NatureOregonAnimalsScienceWeatherClimate & Science

Chart, demo trading & order book

MarketMore than 550,000
Yes88.3¢
24h Chg+1.8pp
Mkt Vol$1.2K
live
Order bookYes
Market tradeslive · 6s
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Markets and probabilities

3 markets
How to read

The percentage is the implied probability of the outcome, between 0% and 100%. For mutually-exclusive markets the sum trends to 100% (no vig). The ▲/▼ arrow shows the change over the selected window (1h/24h/7d/30d) in percentage points (pp). Click a market to see its top holders (with average entry price and position change) and the latest trades.

How many Chinook will pass Bonneville Dam by October 31? — Polymarket implied odds · Polytracker