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WT Staff

Streamflow Situation
From the network of USGS streamflow monitors in Ohio
Below normal to much below normal flows in south and central Ohio

July 3 223 pm EDT

Streamflows run below normal to much below normal through the south facing drainage basins of the Great Miami River, Scioto River, Muskingum River and Ohio River minor tributaries midweek. With the north under a severe storm advisory with risk of localized flash flooding. As of this update, no indication of the filling of waterways is evident yet. As of this report, there are no active flood events recorded in the network, no extreme high flows. A second percentile flow is recorded in the Ohio River minor tributary Wheeling Creek watershed.

Active flooding:
0 streamflow gauges report above flood stage

Flows above 99th percentile
0 streamflow gauges record above the 99th percentile or action stage:

Drought and low flow from the USGS WaterWatch seven-day average streamflow compared with historic streamflow

0 USGS gauges recording 1st percentile or lower

Below normal rated area includes:
  • Shade River watershed Jackson and Lawrence Counties
  • Lower Scioto, Paint River, Tygarts watersheds
  • Great Miami River basin - Upper and Lower Great Miami, Little Miami River watersheds
  • Muskingum River Basin, except Tuscarawas River watershed, unrated
  • Middle Ohio River minor tributaries Shade River, Raccoon-Symmes, Brush-Whiteoak and Laughery watersheds

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.

As sourced from USGS Waterwatch Current Streamflow


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 carís 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.

      Click here for the monitoring sites upstream and downstream nearest your home.

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