{ "lid": "MELO1", "usgsId": "03238680", "reachId": "1922918", "name": "Ohio River at Meldahl Dam", "description": "", "rfc": { "abbreviation": "OHRFC", "name": "Ohio River Forecast Center" }, "wfo": { "abbreviation": "ILN", "name": "Wilmington" }, "state": { "abbreviation": "OH", "name": "Ohio" }, "county": "Clermont", "timeZone": "EST5EDT", "latitude": 38.797111, "longitude": -84.171139, "pedts": { "observed": "HTIRG", "forecast": "HTIFF" }, "status": { "observed": { "primary": 14.26, "primaryUnit": "ft", "secondary": 37.9, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-08-30T20:30:00Z" }, "forecast": { "primary": 14.3, "primaryUnit": "ft", "secondary": 38.4, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-08-31T00:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 64, "flow": -9999 }, "moderate": { "stage": 58, "flow": -9999 }, "minor": { "stage": 51, "flow": -9999 }, "action": { "stage": 49, "flow": -9999 } }, "lro": { "minorCS": "< 0.05", "moderateCS": "< 0.05", "majorCS": "< 0.05", "producedTime": "2026-08-29T03:30:05Z", "interval": "SON" }, "crests": { "historic": [ { "occurredTime": "1937-01-26T00:00:00Z", "stage": 76, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1913-03-31T00:00:00Z", "stage": 67, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1945-03-06T00:00:00Z", "stage": 65.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1964-03-13T00:00:00Z", "stage": 63.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-03-05T00:00:00Z", "stage": 62.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2025-04-08T00:30:00Z", "stage": 56.28, "flow": 542391, "preliminary": "P", "olddatum": false }, { "occurredTime": "2018-02-25T23:30:00Z", "stage": 55.73, "flow": 532764, "preliminary": "O", "olddatum": false }, { "occurredTime": "2021-03-04T16:45:00Z", "stage": 54.64, "flow": 513919, "preliminary": "P", "olddatum": false }, { "occurredTime": "2015-03-15T05:30:00Z", "stage": 54.41, "flow": 509981, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-01-11T00:00:00Z", "stage": 54.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1991-01-03T14:00:00Z", "stage": 53.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-01-24T10:00:00Z", "stage": 53.73, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-13T21:00:00Z", "stage": 53.7, "flow": 497566, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-02-20T15:00:00Z", "stage": 53.43, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2025-02-19T15:30:00Z", "stage": 52.67, "flow": 479145, "preliminary": "P", "olddatum": false }, { "occurredTime": "2020-02-15T18:00:00Z", "stage": 52.05, "flow": 468220, "preliminary": "P", "olddatum": false }, { "occurredTime": "1994-01-31T23:00:00Z", "stage": 52, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2000-02-21T23:00:00Z", "stage": 51.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1972-12-12T00:00:00Z", "stage": 51.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-01-09T02:00:00Z", "stage": 51.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-02-13T04:30:00Z", "stage": 51.22, "flow": 453785, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-02-26T05:00:00Z", "stage": 48.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-02-15T05:00:00Z", "stage": 44.22, "flow": 0, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2025-04-08T00:30:00Z", "stage": 56.28, "flow": 542391, "preliminary": "P", "olddatum": false }, { "occurredTime": "2025-02-19T15:30:00Z", "stage": 52.67, "flow": 479145, "preliminary": "P", "olddatum": false }, { "occurredTime": "2021-03-04T16:45:00Z", "stage": 54.64, "flow": 513919, "preliminary": "P", "olddatum": false }, { "occurredTime": "2020-02-15T18:00:00Z", "stage": 52.05, "flow": 468220, "preliminary": "P", "olddatum": false }, { "occurredTime": "2019-02-13T04:30:00Z", "stage": 51.22, "flow": 453785, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-02-25T23:30:00Z", "stage": 55.73, "flow": 532764, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-02-20T15:00:00Z", "stage": 53.43, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-02-15T05:00:00Z", "stage": 44.22, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2015-03-15T05:30:00Z", "stage": 54.41, "flow": 509981, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-13T21:00:00Z", "stage": 53.7, "flow": 497566, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-01-11T00:00:00Z", "stage": 54.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-01-09T02:00:00Z", "stage": 51.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-02-26T05:00:00Z", "stage": 48.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2000-02-21T23:00:00Z", "stage": 51.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-03-05T00:00:00Z", "stage": 62.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-01-24T10:00:00Z", "stage": 53.73, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1994-01-31T23:00:00Z", "stage": 52, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1991-01-03T14:00:00Z", "stage": 53.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1972-12-12T00:00:00Z", "stage": 51.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1964-03-13T00:00:00Z", "stage": 63.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1945-03-06T00:00:00Z", "stage": 65.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1937-01-26T00:00:00Z", "stage": 76, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1913-03-31T00:00:00Z", "stage": 67, "flow": 0, "preliminary": "O", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 76, "statement": "This is the flood of record which was set in January 1937. The entire floodplain is inundated. Much of Highway 52 is flooded, and many low-lying residences and businesses must be evacuated. Nearly all of Augusta, Kentucky is under water, as well as Higginsport, Chilo, Foster and Neville in Ohio, with 10 feet or more of water in areas of these communities." }, { "stage": 70, "statement": "Flooding as deep as 8 to 10 feet occurs in Augusta, Higginsport, Chilo, Foster and Neville. A flood of this magnitude is beyond the FEMA 1 percent flood with the entire floodplain inundated." }, { "stage": 66, "statement": "The Villages of Moscow and Neville are completely flooded. Major backwater flooding into creeks and streams occurs over Clermont, Brown, Bracken and Pendleton Counties. Much of Route 52 is under water, and major inundation of homes and businesses occurs in Chilo, Foster, Neville, Augusta and Higginsport." }, { "stage": 64, "statement": "The floodplain is inundated with flood depths of several feet of water into the communities of Neville, Moscow, Higginsport, Augusta, Foster and Chilo. A flood of this level equates roughly to the FEMA 1 percent flood." }, { "stage": 63, "statement": "The Village of Neville becomes inaccessible and much of Moscow becomes flooded. Large amounts of property damage can be expected and evacuations of homes and businesses becomes widespread. Route 52 is flooded in long stretches." }, { "stage": 61, "statement": "The entire Village of Neville in Clermont County becomes flooded. Much of Route 52 is impassible for long stretches. Significant lowland and backwater flooding can be expected along the river." }, { "stage": 58, "statement": "Much of the Village of Neville floods, with evacuations of homes and businesses becoming necessary. Significant backwater flooding occurs along creeks and streams emptying into the Ohio River. Route 52 becomes flooded in many low areas." }, { "stage": 55, "statement": "The Village of Neville, Ohio begins to experience lowland flooding, while backwater flooding along creeks and streams results in lowland flooding along the river. Route 52 becomes cut off in southern Clermont County at Bear Creek and Maple Creek near Neville." }, { "stage": 54, "statement": "Route 52 and State Route 232 near Point Pleasant, Ohio are covered with water. Backwater flooding near the river worsens in Clermont, Brown, Bracken and Pendleton Counties." }, { "stage": 53, "statement": "Water rises over Route 52 below the locks, and backwater flooding continues along several creeks and streams in Clermont and Brown counties in Ohio and Bracken and Pendleton Counties in Kentucky. Portions of Route 52 in Ohio and low areas between Route 8 and the river in Kentucky are flooded." }, { "stage": 52, "statement": "Lowland flooding of streets near Neville continues. Water covers Route 52 near State Route 232 in Point Pleasant, with backwater flooding up Big Indian Creek resulting in high water along stretches of Route 232 close to the river. " }, { "stage": 51, "statement": "Lowland and backwater flooding impacts some roads in southern Clermont and Brown Counties in Ohio and Bracken County in Kentucky. Jones-Bradford Road floods near Route 8 in Bracken County." }, { "stage": 50, "statement": "Lowland flooding near the river increases, as well as backwater flooding in southern Clermont and Brown Counties in Ohio and Bracken County in Kentucky." }, { "stage": 49, "statement": "Lowland flooding near the river occurs, as well as backwater flooding in southern Clermont and Brown Counties in Ohio and Bracken County in Kentucky. " } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/MELO1.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/MELO1.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/MELO1.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/MELO1.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/MELO1.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/MELO1.volume.exceed.90day.gif" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/MELO1.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/melo1_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/melo1_record.png" }, "photos": [] }, "dataAttribution": [ { "abbrev": "USGS", "text": "03238680", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=03238680&agency_cd=USGS" }, { "abbrev": "USACE", "text": "USACE Huntington District", "title": "U.S. Army Corps of Engineers", "url": "https://water.usace.army.mil/overview/lrh/locations/captameldahlld" } ], "impactsLowWaters": [], "normalThreshold": { "value": 12, "units": "ft" }, "hydronotes": [ { "statement": "River Forecasts typically include ONLY 2 days of future rain from forecast issuance time (lower right of graph). Occasionally 3 days of future rain included.", "effective": "0101", "expiration": "1231" } ], "datums": { "vertical": { "value": [ { "label": "National Geodetic Vertical Datum of 1929", "abbrev": "NGVD29", "description": "A fixed reference adopted as a standard geodetic datum for elevations determined by leveling. The datum was derived for surveys from a general adjustment of the first-order leveling nets of both the United States and Canada. In the adjustment, mean sea level was held fixed as observed at 21 tide stations in the United States and 5 in Canada. The year indicates the time of the general adjustment. A synonym for Sea-level Datum of 1929. The geodetic datum is fixed and does not take into account the changing stands of sea level. Because there are many variables affecting sea level, and because the geodetic datum represents a best fit over a broad area, the relationship between the geodetic datum and local mean sea level is not consistent from one location to another in either time or space. For this reason, the National Geodetic Vertical Datum should not be confused with mean sea level. See North American Vertical Datum of 1988 (NAVD 88). NGVD 29 should not be used as Mean Sea Level. NGVD 29 is no longer supported by NGS.", "value": 442.27 } ] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "MYVK2", "downstreamLid": "CCNO1", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "5", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }