Water Resources of the United States
Date: Wed, 19 May 2021 13:43:47 EDT
Summary: Additional rainfall amounts of 3 to 5 inches over the past 24 hours have resulted in continuation of flooding across central and east Texas.
Over the past 24 hours, a large area of central and east Texas received an additional 3 to 5 inches of rainfall (from the 6 to 10 inches that have fallen over the past 3 days). In some areas the intensities exceed 2 inches/hour, resulting in flash flooding. The storms have also moved to the Gulf Coast resulting in significant precipitation from Victoria to the Louisiana Border.
Most streams across central, north, and east Texas are flowing near bank-full conditions, with some exceeding National Weather Service Flood levels; 28 above minor flood stage and 10 above moderate flood stage. Conditions in several streams, including the Nueces, San Bernard, Neches, and Sabine Rivers are expected to continue to rise in downstream locations as the water moves towards the coast.
Approximately 30 USGS staff are in the field today, working in 2-person crews, and are visiting 30 sites with over 20 discharge measurements planned. No peaks of record have been recorded and 2 gages are currently malfunctioning - both are being repaired today. At least 5 sites are being sampled for water-quality parameters and constituents.
The NWS predicts an additional 3 to 5 inches of rainfall possible over the next 24 hours. Depending on where these rains fall and their intensity, additional flooding could occur. Offices expect to continue to measure effected sites for the remainder of the week and possibly into the weekend depending on future rainfall.
USGS staff continue to coordinate with local, state, and federal partners to communicate the results of field activities, as well as addressing any concerns.