May 12, 2018
Seasonal snow melt flooding along with heavy rain caused significant damage to the levee near Lorenzo as it was eroding 500 feet per day. The Snake River and Henry's Fork of the Snake flowed at action stage for several weeks causing the event. Jefferson County declared disaster as it was costing 9,000 dollars per day for seven days. The County used all of their 40,000 dollars for the repairs to the levee and required further assistance from the US Corps of Engineers.
Source: NOAA National Weather Service Storm Events Database (event 760231). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Jefferson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.