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4/2/2024

WT Staff

FLOODS and FLOWS


April 2, 2024


As many Ohio drinking water facilities are supplied from surface water bodies including lakes, rivers and reservoirs, the streamflow situation is pertinent to both drinking water supply and quality. High flows can stir up sediment and cause turbidity in the raw source water, requiring additional treatment to render the water potable. Low flow volume is linked to shallower conditons and warmer temperatures in surface water bodies, which can be an issue for water quality where HABs are present.

WTOH.us tracks current streamflow conditions with an eye to the impacts on drinking water supply and quality in 32 watersheds of the state's 5 drainage basins. Check the watershed layer on the map to see the high and low streamflows that may be impacting drinking water water in Ohio today.


Active flooding:
22 streamflow gauge reporting above flood stage
Lake Erie basin
  • Tiffin River is flooding at Stryker
  • Wills Creek is flooding at Cambridge
  • Mad River is flooding at Springfield
  • Auglaize River is flooding at Fort Jennings
  • Portage River is flooding at Woodville
  • Huron River is flooding at Milan
  • Black River is flooding at Elyria
  • Eagle Creek is flooding above Findlay
  • Lye Creek is flooding above Findlay
Mississippi basin
  • Great Miami River is flooding at Sidney
  • Eagle Creek is flooding at Phalanx Station
  • Short Creek is flooding at Dillonvale
  • Stillwater Creek is flooding at Uhrichsville
  • Muskingum River is flooding near Coshocton, at McConnelsville and Beverly
  • Killbuck Creek is flooding at Killbuck
  • Licking River is flooding at Newark
  • North Fork Licking River is flooding at Newark
  • Scioto River is flooding at LaRue

Flows above 99th percentile
Dozens of streamflow gauges are recording 99th percentile throughout Ohio Tuesday night, more to follow.
Lake Erie basin
  • Sandusky River is flowing high near Bucyrus, Upper Sandusky and Freemont
  • Rock Creek is flowing high at Tiffin
  • Blanchard River is flowing high near Findlay
  • Chagrin River is flowing high at Willoughby
  • Cuyahoga River is flowing high at Independence
  • Rocky River is flowing high near Berea
  • Vermilion River is flowing high near Vermilion
Mississippi basin
  • Loramie Creek is flowing high near Newport and Lockington
  • Stillwater River is flowing high at Pleasant Hill
  • Greenville Creek is flowing high near Bradford
  • Great Miami River is flowing high at Troy and Taylorsville
  • Mad River is flowing high near Urbana, Eagle City, flooding at Springfield, high near Dayton
  • East Fork Little Miami River is flowing high at Perintown
  • Ohio Brush Creek is flowing high near West Union
  • Mill Creek is flowing high near Bellepoint
  • Scioto River is flowing high near Prospect, below Oshaughnessy Dam near Dublin and at Columbus
  • Olentangy River is flowing high near Worthington
  • Big Darby Creek is flowing high near Darbyville
  • Big Walnut Creek is flowing high at Central College and Rees
  • Alum Creek is flowing high at Columbus
  • Clear Creek is flowing high near Rockbridge
  • Hocking River is flowing high at Enterprise
  • Kokosing River is flowing high at Mount Vernon
  • Mahoning River is flowing high at Youngstown
  • South Fork Licking River is flowing high near Hebron
  • Wakatomika Creek is flowing high near Frazeyburg
  • Muskingum River is flowing high at Dresden
  • Tuscarawas River is flowing high at Newcomerstown
  • Kokosing River is flowing high at Mount Vernon
  • Sandy Creek is flowing high at Waynesburg
  • Nimishillen Creek is flowing high at North Industry
  • Middle Branch Nimishillen Creek is flowing high at Canton
  • Mill Creek is flowing high near Coshocton
  • Wheeling Creek is flowing high below Blaine
  • Yellow Creek is flowing high near Hammondsville
Drought and low flow from the USGS WaterWatch seven-day average streamflow compared with historic streamflow
0 USGS gauges recording low flow Extreme hydrologic drought
Severe hydrologic drought
  • Lake Erie basin - Lower Maumee River watershed
Moderate drought
  • Upper Ohio minor tributaries - Raccoon-Symmes watershed - Lawrence and Gallia Counties
  • Scioto River basin - Paint Creek watershed
  • Great Miami River basin - Lower Great Miami watershed

Below normal rated area includes:
  • Lake Erie west drainage basin - Tiffin, Upper and Lower Maumee, St Marys watersheds
  • Lake Erie - Blanchard River watershed - Hancock, east Putnam Counties
  • Lake Erie basin west - St Josephs River watershed, Sandusky, Huron-Vermilion River watersheds
  • Ohio River minor tributaries - Brush-Whiteoak, Laughery watersheds
  • Lower Scioto River watershed
  • Little Miami River watersheds


As sourced from USGS Waterwatch Current Streamflow


FLOOD SAFETY

What is the difference between a Flood Watch and a Flood Warning issued by the National Weather Service?
  • Flash Flood Warning: Take Action! A Flash Flood Warning is issued when a flash flood is imminent or occurring. If you are in a flood prone area move immediately to high ground. A flash flood is a sudden violent flood that can take from minutes to hours to develop. It is even possible to experience a flash flood in areas not immediately receiving rain.

  • Flood Warning: Take Action! 

    A Flood Warning is issued when the hazardous weather event is imminent or already happening. A Flood Warning is issued when flooding is imminent or occurring.

  • Flood Advisory: Be Aware:

    A Flood Advisory is issued when a specific weather event that is forecast to occur may become a nuisance.

    A Flood Advisory is issued when flooding is not expected to be bad enough to issue a warning. However, it may cause significant inconvenience, and if caution is not exercised, it could lead to situations that may threaten life and/or property.

  • Flood Watch: Be Prepared:

    • A Flood Watch is issued when conditions are favorable for a specific hazardous weather event to occur.
    • Flood Watch is issued when conditions are favorable for flooding. It does not mean flooding will occur, but it is possible.

    Be prepared, stay safe through flood events

    Did you know
    • 6 inches deep moving water can knock an adult down
    • 12 inches deep flowing water can carry a car away!
    • (From ready.gov)


      Stay safe during flood events, watch for flood alerts in your area, here in BLACK.

      Avoid driving into flooded areas, and take caution trying to drive out of a flood zone.

      Avoid using bridges over high flowing rivers.

      If possible, move to higher ground, get uphill, or move to a higher floor in your building or home,

      leaving yourself an exit to the roof if necessary. Do not become trapped in an attic!

       

      Keep dry food, bottled water, flashlight and extra batteries, cell phone charger packed in go bags for all of your household and pets.

      Have flotation devices accessible for every member of your household in case you need to evacuate on foot.

       

      If you must drive to get out of a flood zone,

      have a high-quality window breaking/seatbelt cutting device in your vehicle, secured to your rearview mirror for fast retrieval.

      You may not be able to reach your car’s glove box in an emergency situation.

      The contents of seat and door storage compartments and center console may become displaced in an emergency,

      causing you to lose track of items that are not secured.

       

      Even if your vehicle has rolled or tipped over, as long as you are still belted in, you should be able to reach the rear-view mirror to retrieve your emergency tool.

      Keep your seatbelt on until the vehicle has made impact with the water body.  It will often float on the surface for a short time.

      There is time to get out through an open side window.  Act calmly, deliberately and quickly, without hesitation.

       

      Use your tool to cut your seatbelt if the buckle will not release in the normal way.

      Use your window breaking device toward a corner of your side window to break the safety glass. 

      Attempting to break the window at the center may not work.

      Windshields and rear windows are reinforced and will not break as easily as the side windows.

      If your vehicle is in any danger of becoming submerged, you need to get out before it goes underwater.

      Submerged vehicles may roll over or invert underwater, disorienting you and others inside. 

       

      Get familiar with your local streams and rivers, know your normal flow levels and check the USGS Waterwatch Current Streamflow for the real time flow volume and depth.

      Find the monitoring sites upstream and downstream nearest your home and sign up for high flow alerts.

      https://waterwatch.usgs.gov/









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