5/6/2024
WT Staff
HAPPENING NOW
Much above normal streamflows Long Island
Water news for Monday, May 6, 2024 819 am EDT
Streamflows through New York picked up over the weekend with above normal to much above normal flows captured Monday morning on Long Island and Delaware River watershed. Moderate drought rating remains in the Upper basin of the Hudson River, downstream area still rated below normal. Black River, St Lawrence River, Delaware River, lower Genesee, Niagara-Erie, Chemung, Allegheny River watersheds remain below normal Monday. One station records 99th percentile flow in NYS, Swan River is high near Patchogue in Suffolk County. No first percentile low flows are registering in the NY network Monday.
Harmful Algal Bloom HAB Monitoring satellite program of the National Center for Coastal Ocean Science (NCCOS)
New York Department of Environmental Conservation surface observation of HABs monitoring season has not yet opened as of this report. Check back here for the daily update on HABs monitoring status.
The latest satellite image uploaded from NCCOS was captured May 2 at undetermined wind speed. This image is completely cloud obscured. The April 26 capture gives a clear view to the water, showing dozens of localized blooms at the moderate concentration 100 thousand cells per 100 ml in various locations along the east, west and island shorelines and open water of Lake Champlain. For a detailed report click here or click on the HABs button to the right of the map.
WT USA Flows and Flood Tracker provisional data from the network of USGS streamflow monitors
Seventy-eight streamflow gauges record flooding in the USA Monday, down from eighty-four Saturday and ninety-three 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, another new flooding has registered on the Louisiana streamflow network. There are currently seven active floodings on our radar, all recorded in Louisiana.
Region 4 watershed includes the area of Louisiana drained by the west boundary, Sabine River, running to the Gulf of Mexico. Sabine River has been flooding at various locations in the Louisiana channel since the end of January 2024. Last week just one station recorded flow above flood stage at the lower end near Ruliff, TX. Over the last few days, flooding has progressed upstream to the station near Bon Wier, TX and early Sunday morning flood stage was breached near Burkeville, TX. Also in watershed Region 4, Calcasieu River continues to flood, currently on the fifth overflow event of 2024, running close to two feet over the channel in the upper basin near Glenmora. Downstream near Kinder, Calcasieu River runs half a foot above flood stage. In watershed Region 1, Bayou Dorcheat and Bayou Bodcau continue to flood northwest Louisiana near Springhill and Shreveport, running nine inches over and six feet nine inches over the channels, respectively.
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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