News

May 01, 2023

Flood Warning issued June 10 at 12:17PM MDT by NWS Pocatello ID

* WHAT…Minor flooding is occurring and minor flooding is forecast. * WHERE…Big

* WHAT…Minor flooding is occurring and minor flooding is forecast.

* WHERE…Big Lost River below Mackay Reservoir.

* WHEN…From this afternoon until further notice.

* IMPACTS…At 4.3 feet, Lowland flooding below Mackay Dam throughthe Darlington Flats. US Highway 93 may be impacted at the curveby Leslie between 3900 North and 4050 North.

* ADDITIONAL DETAILS…– At 11:45 AM MDT Saturday the stage was 4.5 feet.– Recent Activity…The maximum river stage in the 24 hoursending at 11:45 AM MDT Saturday was 4.5 feet.– Forecast…Heavy recent rainfall combined with high mountainsnowmelt has caused high inflows into the Mackay reservoir,prompting higher releases downstream. We remain in a wetweather pattern. Today and tomorrow afternoon into earlyevening models are showing lighter rainfall. However, Mondayand Tuesday in the afternoon/early evening models continue toshow moderate to heavy rainfall. This will likely result inhigher river inflows into the reservoir. Wednesday throughFriday models are still showing afternoon rainfall butrainfall amounts look to be fairly light. So a downward trendin river flows upstream of the reservoir by Howell areexpected by later in the week.– Flood stage is 4.3 feet.– Flood History…This crest compares to a previous crest of4.4 feet on 06/28/2010.– http://www.weather.gov/safety/flood

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