Water Resources of the United States

PROJECT ALERT NOTICE (NY) [Corrected] Post-Flooding High Water Marks Campaign

Date: Fri, 14 Jul 2023 14:04:12 EDT

Summary: In response to significant rainfall across the state of NY between July 9-10, ranging from 2 inches to 8 inches in some locations, widespread flooding occurred resulting in significant damage to roadways, bridges, homes and businesses. The governor of NY issued a Major Disaster Declaration in several counties, and as a result, USGS is flagging and surveying high water marks in the most flood-affected counties as part of a FEMA Mission Assignment.

On July 9th and 10th heavy rain impacted much of New York, including several northern and central counties as well as New York's Hudson Valley and surrounding areas. Initially news outlets reported some localized precipitation near West Point as a "1000 year" event. One death occurred as a result of the flooding, as well as significant damage to roadways, bridges, homes, and businesses. Few NY USGS gages were impacted, with only 3 surpassing flood stage statewide. USGS NY WSC is now flagging high water marks in cooperation with FEMA and with input from the NYS DEC. Twelve towns are being assessed and flagged by 7 field crews. Work is expected to continue through the weekend as additional storms are forecast that could both wash away high-water marks and generate more flooding.

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