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A guest columnist argues that breaching four lower Snake River dams in Washington could reduce the upper Snake River water released each year for salmon migration, which totals up to 487,000 acre-feet. He says the water could potentially be kept for Idaho irrigation, though water rights and federal obligations would need negotiation.
This is an opinion piece proposing a policy idea with no decision yet. Any change to irrigation water supply would affect southern Idaho crop output only over the long term, so the price impact is negligible.
postregister.comJUSTIN HAYES, Guest columnistNov 4, 2026Not enough comparable past events yet for a historical read.
After 1,623 past policy events, Corn moved a median +0.1% over 5 sessions (51% higher; middle half -1.4% to +1.5%), and +0.4% over 20.
After 1,905 past policy events, Soybeans moved a median +0.1% over 5 sessions (52% higher; middle half -1.4% to +1.8%), and +0.2% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
