Save Local Waters

Floods

Flash Floods & Floods
In any given year, damaging floods are likely to occur on at least one major river or stream in Ohio, affecting thousands of homes and businesses, and often, resulting in the loss of life.

What’s in this Section?
This section provides the latest real time information related to flood conditions in Northwest Ohio and across the country, and information on previous flooding events.

Southwest Ohio Flood Information

Advanced Hydrologic Prediction Services (AHPS) – The AHPS products covers forecast periods ranging from hours to months. This information includes the probability of a river exceeding minor, moderate, or major flooding, the chance of a river exceeding certain level, volume, and flow of water at specific points on the river during 90 day periods, and a map of areas surrounding the forecast point that provides information about major roads, railways, landmarks, etc. likely to be flooded.

Status of Ohio River Gages – Each river basin (outlined in white) is a clickable region which takes you to a zoomed map of the same area. The plotted points represents places for which the National Weather Service’s Ohio River Forecast Center issues forecasts, and are colored according to their values. The values represent the most recent forecast we have issued.

Floodplain Management Program – Provides advice and technical information to reduce the impact of flooding. Emphasis is placed on floodplain management and coordination of the National Flood Insurance Program.

National Flood Information

Advanced Hydrologic Prediction Services (AHPS) – AHPS is a web-based suite of accurate and information-rich forecast products. They display the magnitude and uncertainty of occurrence of floods or droughts, from hours to days and months, in advance. These graphical products are useful information and planning tools for many economic and emergency managers.

NWS Hydrologic Information Center: Forecast Offices – The map displays the areas of responsibility for National Weather Service (NWS) Forecast Offices in the coterminous 48 states. The table below the map matches the location of each office with the 3-letter code on the map. Access to hydrologic information for each office is provided by both clicking on the 3-letter code in the table or selecting a location on the map.

Excessive Rainfall Forecasts – These forecasts depict isohyets (A line drawn on a map connecting points that receive equal amounts of rainfall) of accumulated precipitation of 0.01, 0.25, 0.50, and 1 inch expected in each six hour period. Data is generated for eight consecutive six-hourly periods (approximately 48 hours).

Significant River Flood Outlook – This Flood Outlook is intended to provide a general outlook for significant river flooding. It is not intended to depict all small-scale events such as localized flooding and/or flash flooding. This graphic will not depict minor river flooding as this implies only minimal or no property damage with possibly some public inconvenience. Please refer to products issued by local NWS offices for official river forecasts and warnings.

Latest Precipitation Analysis – These pages graphically show the short-term observed and climatic trends of preciption across the lower 48 United States and Puerto Rico. The precipitation analysis pages are routinely updated three times per day, at approximately 9:30am, 12:30pm, and 4:30pm EST.
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