5/11/2024
WT Staff
WEEKEND WATER REPORT
Saturday Edition
WT network flood update for GA and LA
Water news for Saturday, May 11, 2024 1058 am EDT
Current Streamflows, Drought Map from the USGS network in Ohio
Normal to much above normal streamflows dominate the landscape in Ohio Saturday morning with the highest concentration of 90th percentile flow volumes occurring through central Ohio north and south of the state divide. Lake Erie basin's Sandusky River watershed and Scioto River basin are recorded with flows above the 90th percentile with five events above 95th percentile in central state. The Little Miami East Fork is still recording flow at the 99th percentile near Perintown. No active flooding recorded on the network, no low flows.
Wills Creek watershed has stepped down from severe hydrologic drought to moderate drought rating Saturday. One other watershed remains on the drought map, the Grand River still rated below normal while adjacent Cuyahoga and Black-Rocky watersheds are no longer rated.
WT USA Flows and Flood Tracker provisional data from the network of USGS streamflow monitors
Seventy streamflow gauges record flooding in the USA Saturday morning, down from eighty Friday. WT tracks the nation's most common natural disaster dynamics through the states of New York, Ohio, Georgia and Louisiana. As of this report, seven sites record flooding on the network, two in Georgia, five in Louisiana.
Two sites are recorded flowing above flood stage in northwest Georgia Saturday morning. A new flood event recorded yesterday afternoon in the Tennessee River west watershed, West Chickamauga Creek presently recorded three inches over the channel at GA 146 near Lakeview. In the Coosa River watershed, the Oostanula River has been flooding at Calhoun since the wee hours yesterday, on a slow upward trend that appears to have peaked a foot and a half above the channel.
Flooding ceased yesterday on Lookout Creek near New England. Coahulla Creek tucked back into the channel near Dalton around 6 pm yesterday. See the black tags for flood, blue tags for high flow 99th percentile volume updated daily here.
Louisiana posts the same five stations running above flood stage Saturday as reported the last few days. Region 4 watershed Sabine River is slowly receding, today flowing one and a half to two feet above the channel near Bon Wier, TX and downstream Ruliff, TX, respectively. To the east in Region 4 watershed, the Calcasieu River continues spreading out near Glenmora, running more than a foot outside the channel near Glenmora at 2160 cubic feet per second. To the north, Region 1 watershed's Bayou Dorcheat is slowly receding, down two inches overnight to run a foot and seven inches out of the channel near Springhill. Bayou Bodcau has dropped an inch or two overnight near Shreveport, still five feet above the basin. See black tags on the map here.
Harmful Algal Bloom HAB Monitoring satellite program of the National Center for Coastal Ocean Science (NCCOS)
The latest satellite image of Lake Erie west basin was captured May 10 at a surface wind speed of 15.7 mph. This image is mostly clear, with no HAB activity is visible. The high wind speed may be causing any algal bloom mat to submerge, evading detection by the imaging program.
As many drinking water facilities are supplied from surface water reservoirs, the streamflow situation is pertinent to both drinking water supply and quality. High flows can stir up sediment and cause turbidity in the reservoirs, requiring additional treatments to render the water potable. Low flow volume is linked to warmer temperatures in the reservoir and can be an issue for water quality where HABs are present. WT tracks streamflow trends with an eye to the impacts on drinking water supply and quality in each of the state's watersheds. Check the watershed layer on the map to see the direction of flow and streamflows that may be impacting drinking water today.
USGS Provisional Data Statement
Data are provisional and subject to revision until they have been thoroughly reviewed and received final approval. Current condition data relayed by satellite or other telemetry are automatically screened to not display improbable values until they can be verified.
Provisional data may be inaccurate due to instrument malfunctions or physical changes at the measurement site. Subsequent review based on field inspections and measurements may result in significant revisions to the data.
Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information concerning the accuracy and appropriate uses of these data or concerning other hydrologic data may be obtained from the USGS.
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