April 14, 2024
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Twenty two streamflow gauges in flood
NWS: Flooding continues tonight

Water news for Tuesday, April 2, 2024 updated 1008 pm EDT

National Weather Service Hazardous Weather Outlook issued 945 pm EDT April 2
Minor flooding is possible, primarily on the most responsive creeks and rivers.

Impacting Lucas-Wood-Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland-Hancock-Seneca-Huron-Medina-Summit-Portage-Trumbull-Wyandot-Crawford-Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox-Ashtabula Lakeshore-Northern Erie-Southern Erie Counties

Streamflow Situation provisional data supplied by USGS
Streamflows through north and central Ohio are showing signs of decline as of 10 pm Tuesday night. Twenty-two streamflow gauges record flow above flood stage with dozens flowing 99th percentile. More to follow.

Drought Map USGS 7-day average streamflow against seasonal average
The drought map has shifted overnight, Blanchard River has stepped down from extreme drought to below normal. Severe drought has shifted downstream to grip the Lower Maumee River watershed Tuesday. Auglaize River watershed has dropped down to a below normal rating, matching adjacent watersheds of the Lake Erie west basin.

Another change overnight as the storms cycle through central Ohio state, Upper Ohio River minor tributary Raccoon-Symmes watershed has stepped down from severe hydrologic drought to moderate drought. Scioto River basin Paint River watershed remains in moderate drought Tuesday, while Lower Scioto watershed is below normal. Great Miami River is flooding in the upper basins at Sidney, Lower Miami is still rated moderate drought and Little Miami River watershed below normal Tuesday.

Flood Tracker provisional data from USGS streamflow monitors
Eighty-three streamflow gauges record flooding in the USA Tuesday late evening, up from seventy-three floodings at our last update. WT tracks the nation's most common natural disaster dynamics through New York, Ohio, Georgia and Louisiana. As of this report, 30 monitors indicate active flooding; 4 in Georgia, 4 in Louisiana and 22 in Ohio.

Current streamflow map for Ohio registers twenty-two stations above flood stage. Great Miami River, Mad River, Muskingum River, Scioto River, Licking River are flooding Tuesday night, see map for updated flood flows.

See black tags on the map for active flood, blue for high flow, 99th percentile or more.

New York State streamflows dip further below normal Tuesday in an area very recently flowing much above seasonal normal. Lower Hudson and Delaware River watersheds record mostly normal flows Tuesday as Susquehanna watershed drops further below normal, with just one station still posting a normal flow level.

New to the drought map, the current streamflows in St Lawrence River watershed around the Oswegatchie River measure below normal to much below normal Tuesday, Little Salmon River flowing much below normal at Bombay sends north Franklin County to the drought map Tuesday. Moderate hydrologic drought remains on Alleghany River watershed in the southwest with Oswego River - Finger Lakes, Chemung and Genesee Rivers watersheds remaining below normal on the drought map Tuesday, watch for Susquehanna River to join the drought map shortly.

In Louisiana, Calcasieu River is up overnight, recorded at a foot over flood stage near Glenmora. In Region 1 northwest LA, Bayou Bodcau water level appears to be coming down, dropping several inches overnight, running five feet five inches above flood stage Shreveport. Pearl River on the east state border runs two feet over flood stage near Bogalusa in Washington Parish and a foot and three inches over at downstream Town of Pearl River in St. Tammany Parish.

Georgia, Day 27: Tornado watch in effect for northwest and west Georgia overnight. On the Atlantic side of the drainage divide, Ohoopee River flooding has ended around 530 pm near Reidsville. Altamaha River is down near Baxley, still flooding. Savannah River is also down today, a foot and ten inches over flood stage near Cylo. Little Satilla and Satilla Rivers are down slightly, Little Satilla five inches over near Offerman and Satilla River still two feet over flood stage at Atkinson.

Hazardous Spills
4500 gallons of fertilizer reported spilled March 28 in St Mary's Township of Auglaize County. This spill occured in the Maumee watershed during the critical condition for the Lake Erie HAB, this is the period where legacy phosphate and nutrients applied to farm fields via manure application and commercial fertilizer are most mobile and can impact the intensity of HABs in Lake Erie. In the latest image from HAB satellite monitoring program of the National Centers for Coastal Ocean Science, March 29, no HAB activity was visible. More to follow.

Spills in Ohio are reported to the 24 hour emergency spill hotline with response handled by the Ohio Environmental Protection Agency 24/7 at 1-800-282-9378 or 614-224-0946. Anyone with knowledge of a spill of hazardous material is to make a report. Refer to the Spill button to the right of the map for more details on the latest incidents reported to OEPA.

Drinking Water Advisories
Jefferson County: The Village of Rayland came under a BWA after a water main break at Adams Lane and State Route 150. The Village of Rayland water system serves a population of 417 residents from a groundwater purchased source.

Lucas County: A portion of the village of Whitehouse was under a boil advisory after a water main break at Waterville Street and Pelton Drive. Whitehouse Village water system serves 5200 residents from surface water purchased.

See yellow tags on the map for more boil water advisories.

Harmful Algal Blooms - Lake Erie HAB from National Centers for Coastal Ocean Science (NCCOS) satellite monitoring program
Ohio EPA cites spring rains as the main factor contributing to the growth of the Lake Erie HAB for the 2024 season. Rainfall during the critical condition stage March 1 to July 31 dislodges soluble phosphate from fields and streambanks into the Lake Erie west basin. In lock-step with the level of dissolved phosphate in the relatively shallow basin grows the ancient HAB mass, capable of producing toxins tainting the drinking water supply for three million Ohio residents. The spring season has been dry until today, rain expected to mobilize nutrients, see also a 4500 gallon fertilizer spill within the Maumee River watershed area.

The latest satellite image supplied by the NCCOS was captured March 31 at surface wind speed 14.9 mph. The image is heavily cloud obscured. A previous image obtained March 29 gives a clear view of Lake Erie, captured at surface wind speed 6.6 mph. No sign of HAB detected along the shorelines or open water. The prior image of March 25 showed widespread HAB approximately 5 nm off shore from Vermilion-on-the-Lake, moderate concentration, 100 thousand cells per 100 ml or less.

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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