Water Resources of the United States

PROJECT ALERT NOTICE (VA WV) USGS VA-WV WSC response to Florence

Date: Mon, 17 Sep 2018 17:44:10 EDT

Summary: USGS staff are responding to inland flooding as remnants of Hurricance Florence moved through the region overnight and this morning.

Remnants of Hurricane Florence dropped an additional 3-5 inches of rain over most of southwestern Virginia and the Shenandoah Valley overnight on Sunday and into Monday morning. Nine 2-person crews from the VA-WV WSC were in the field Monday making flood measurements. 14 measurements have been made so far today, with a number still in progress. There was one rating that required an adjustment and NWS was notified of the change.

Three teams will return home tomorrow and the remaining staff will continue to measure high flows on the Dan River and New River in the south as well as the North and South Fork Shenandoah Rivers to the north.

Flood returns for the New and Roanoke Rivers are in the 0.4 AEP (2-yr) - 0.2 AEP (5-yr) range with the Dan River forecast to reach levels in the 0.1 AEP (10-yr) - 0.04 AEP (25-yr) range.

There is only one gage in the affected area that is not operational, but it is operated by the VA DEQ and they are working to get it fixed.

A single 2-person team was deployed to the coast to begin retrieval of RDGs and storm surge sensors. They will be out tonight and continue those retrievals tomorrow.

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