6/16/2024
WT Staff
 HAPPENING NOW
Sunday, June 16, 2024
High concentration HAB expands toward Lake Erie from Sandusky Bay
June 16, 2024 1021 am EDT
HABS Tracker satellite monitoring by the National Centers for Coastal Ocean Science (NCCOS)
A new sat image for Lake Erie captured June 15 at 4.5 mph shows the Sandusky Bay HAB occupying the open water of both inner and outer bay area from White's Landing past Bay View and OH 269 to Johnson's Island. The HAB mass is a higher concentration than seen in all of last season in Sandusky Bay. The raw water intakes for Sandusky City and Upper Sandusky are located in the outer bay area with an alternate intake in Lake Erie. Routine testing is underway, total microcystins to June 8 showed below minimum reporting level. More to follow as new water testing results become available. More information on Sandusky City drinking water facility here.
EXCESSIVE HEAT WATCH issued 920 am June 16 by NWS Cleveland forecast center
Prolonged dangerously hot conditions with heat index values
in excess of 100 degrees possible for north central, northeast, and northwest Ohio and northwest Pennsylvania from Monday morning through Friday evening.
Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
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-Crawford Counties.
Including the cities of Crestline, Carey, Port Clinton, Jefferson, Avon Lake, Ravenna, Wooster, Bainbridge, Clyde, Niles,
Canton, Andover, Elyria, Titusville, Conneaut, Austintown, Orwell, Ashland, Massillon, Killbuck, Youngstown, Alliance,
Tiffin, Cardington, Norwalk, Wadsworth, Union City, Chesterland, Ashtabula, Brunswick, Painesville, Roaming Shores, Lorain, Erie,
Marion, Geneva, Upper Sandusky, Rittman, Cleveland, Sandusky, Willard, Willoughby, Edinboro, Bucyrus, Burton, Kent, Galion,
Boardman, Bellevue, Akron, Meadville, Genoa, Fostoria, Millersburg, Toledo, Fremont, Middlefield, Oak Harbor, Bowling
Green, North Ridgeville, Huron, Orrville, South Russell, Mount Gilead, Eastlake, Perrysburg, Aurora, Mount Vernon, Mansfield,
Mentor, Findlay, Warren, Corry, Chardon, Wickliffe, Willowick, Medina, and Streetsboro
Streamflow Situation
from the USGS network of streamflow gauges in Ohio
The trend to lower streamflows has taken over the current streamflow map Sunday, more stations are rated below normal than normal, impacting both sides of the state divide. The highest flows in the state are seasonal normal in the upper end of the range, the highest observed value being 74th percentile in the Mahoning River watershed. Most of the normal ratings are below the 50th percentile, leaning in the lower end of the range. The lowest flow recorded Sunday is as reported yesterday, a 3rd percentile recorded on the Cuyahoga River near the Lake Erie outlet end, this site being monitored for thirty years, only a half a dozen times previously has this station seen such a low water level. The drought map has blown up today with a bunch of new watersheds rated below normal, Wills Creek has jumped from below normal to moderate drought overnight. New on the drought map Sunday, Scioto River basin Paint Creek watershed comes on below normal, Ohio minor tributary Laughery watershed in Hamilton County, Ohio River minor tributary Shade River is back on at below normal and in the northeast, Grand River watershed joins adjacent Ashtabula Chagrin watershed at below normal, in the northwest Lake Erie basin we still have Upper Wabash watershed below normal, impacting Mercer County. Ohio River minor tributaries Little Beaver Creek, Wheeling, Raccoon-Symmes watersheds remain below normal Sunday as reported here yesterday.
WT USA Flood Tracker provisional data from the network of USGS streamflow monitors
Thirty streamflow gauges record flows above flood stage through the US monitoring network Sunday, up from twenty-nine yesterday. WT USA follows the water levels and volume on four of these reference flood events, and all four occurring in the state of Louisiana.
Louisiana: West state border Sabine River got back out of the channel around 9pm Saturday night near Logansport, currently recorded half a foot over minor flood stage running 22600 cubic feet per second. The volume downstream near Bon Wier is 31000 cfs and nine inches over minor flood stage on a steady receding trend. Closer to the Gulf outlet near Ruliff the water level is still more than two feet above the channel and 41600 cfs. Region 1 Bayou Bodcau Lake continues to recede slowly, down another three inches over the last twenty-four hours, currently recorded three and a half feet above the basin near Shreveport. For more info on the flooding in Louisiana, see black tags indicating flood flow volume and gauge height updated daily here.
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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