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2015 U.S. Spring Flood Outlook

2015 U.S. Spring Flood Outlook Map

Record snowfall and unusually cold temperatures in February through early March retained a significant snowpack across eastern New England and western New York raising flood concerns. Significant river ice across northern New York and northern New England increase the risk of flooding related to ice jams and ice jam breakups. Rivers in these areas are expected to exceed moderate flood levels this spring if there is quick warm up with heavy rainfall.

There is a 50 percent chance of exceeding moderate flood levels in small streams and rivers in the lower Missouri River basin in Missouri and eastern Kansas which typically experience minor to moderate flooding during the spring. This flood potential will be driven by rain and thunderstorms.

Moderate flooding has occurred in portions of the Ohio River basin, including the Tennessee and Cumberland rivers from melting snow and recent heavy rains. This has primed soils and streams for flooding to persist in Kentucky, southern Illinois, and southwest Indiana with the typical heavy spring rains seen in this area.

Minor river flooding is possible from the Gulf Coast through the Ohio River Valley and into the Southeast from Texas eastward and up the coast to Virginia. The upper Midwest eastward to Michigan has a low risk of flooding thanks to below normal snowfall this winter. Though, heavy rainfall at any time can lead to flooding, even in areas where overall risk is considered low.

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