Skip to main content
icon for What will the White River at Indianapolis peak at during the August 2026 floods?

What will the White River at Indianapolis peak at during the August 2026 floods?

icon for What will the White River at Indianapolis peak at during the August 2026 floods?

What will the White River at Indianapolis peak at during the August 2026 floods?

Over 20 ft 96.9%

17–20 ft 1.6%

Under 14 ft <1%

14–17 ft <1%

Polymarket

$13,876 Vol.

Over 20 ft 96.9%

17–20 ft 1.6%

Under 14 ft <1%

14–17 ft <1%

Polymarket

$13,876 Vol.

Under 14 ft

$1,478 Vol.

<1%

14–17 ft

$1,688 Vol.

<1%

17–20 ft

$2,512 Vol.

2%

Over 20 ft

$8,199 Vol.

97%

This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is less than 14.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 14.00 feet and below 17.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 17.00 feet and below 20.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 20.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.Recent NOAA and USGS gauge observations, including a confirmed crest near 21.2 feet at the Nora site, have driven the market-implied odds for a White River peak over 20 feet at Indianapolis to 96.9%. Multiple rounds of heavy rainfall totaling over a foot across central Indiana from August 11–17 produced record or near-record flooding not seen since 1913, with the river entering major flood stage and sustaining elevated levels. Trader consensus, backed by real-time stage data, now treats the outcome as effectively settled ahead of the September 1 resolution. Only a substantial official revision to the hydrograph or undetected measurement error could realistically shift the peak into the 17–20 foot band.

This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 17.00 feet and below 20.00 feet. Otherwise, this market resolves "No".

Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.
Volume
$13,876
End Date
Sep 1, 2026
Market Opened
Aug 14, 2026, 2:27 PM ET

Resolver

0x69c47De9D...
This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 17.00 feet and below 20.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.
This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is less than 14.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 14.00 feet and below 17.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 17.00 feet and below 20.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 20.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.Recent NOAA and USGS gauge observations, including a confirmed crest near 21.2 feet at the Nora site, have driven the market-implied odds for a White River peak over 20 feet at Indianapolis to 96.9%. Multiple rounds of heavy rainfall totaling over a foot across central Indiana from August 11–17 produced record or near-record flooding not seen since 1913, with the river entering major flood stage and sustaining elevated levels. Trader consensus, backed by real-time stage data, now treats the outcome as effectively settled ahead of the September 1 resolution. Only a substantial official revision to the hydrograph or undetected measurement error could realistically shift the peak into the 17–20 foot band.

This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 17.00 feet and below 20.00 feet. Otherwise, this market resolves "No".

Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.
Volume
$13,876
End Date
Sep 1, 2026
Market Opened
Aug 14, 2026, 2:27 PM ET

Resolver

0x69c47De9D...
This market resolves "Yes" if the maximum gage height recorded at USGS streamgage 03353000 (White River at Indianapolis, IN) between market creation and 11:59 PM EDT August 31, 2026 is at or above 17.00 feet and below 20.00 feet. Otherwise, this market resolves "No". Resolution is based on the peak gage height value recorded during the specified window as published by USGS at https://waterdata.usgs.gov/monitoring-location/USGS-03353000#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true. USGS real-time data is provisional and subject to revision; the last provisional value published by USGS for the specified window as of 11:59 PM EDT September 1, 2026 governs, regardless of any USGS revision, approval, or finalization published after that time. For reference, NWS designates flood stage at this location as 16.0 feet. The primary resolution source is USGS data for streamgage 03353000; however, a consensus of credible reporting citing USGS data may also be used.

Related

icon for Will the Danube River return to normal levels between October 1 and October 31, 2026?

Will the Danube River return to normal levels between October 1 and October 31, 2026?

37%
icon for Will a 6.5+ earthquake occur worldwide by September 30?

Will a 6.5+ earthquake occur worldwide by September 30?

100%
icon for Will 80 to 99 tornadoes occur in the United States in August 2026?

Will 80 to 99 tornadoes occur in the United States in August 2026?

53%

Beware of external links.

Frequently Asked Questions

"What will the White River at Indianapolis peak at during the August 2026 floods?" 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 "Over 20 ft" at 97%, followed by "17–20 ft" at 2%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 97¢ implies that the market collectively assigns a 97% 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.

As of today, "What will the White River at Indianapolis peak at during the August 2026 floods?" has generated $13.9K in total trading volume since the market launched on Aug 14, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "What will the White River at Indianapolis peak at during the August 2026 floods?," 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 "What will the White River at Indianapolis peak at during the August 2026 floods?" is "Over 20 ft" at 97%, meaning the market assigns a 97% chance to that outcome. The next closest outcome is "17–20 ft" at 2%. 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 "What will the White River at Indianapolis peak at during the August 2026 floods?" 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.