{ "lid": "GAPA1", "usgsId": "02400500", "reachId": "22199835", "name": "Coosa River at Gadsden", "description": "", "rfc": { "abbreviation": "SERFC", "name": "Southeast River Forecast Center" }, "wfo": { "abbreviation": "BMX", "name": "Calera" }, "state": { "abbreviation": "AL", "name": "Alabama" }, "county": "Etowah", "timeZone": "CST6CDT", "latitude": 34.010375216919, "longitude": -85.9977493975213, "pedts": { "observed": "HGIRZ", "forecast": "HGIFF" }, "status": { "observed": { "primary": 507.28, "primaryUnit": "ft", "secondary": -999, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-11-13T18:00:00Z" }, "forecast": { "primary": -999, "primaryUnit": "", "secondary": -999, "secondaryUnit": "", "floodCategory": "fcst_not_current", "validTime": "0001-01-01T00:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 517, "flow": -9999 }, "moderate": { "stage": 514, "flow": -9999 }, "minor": { "stage": 511, "flow": -9999 }, "action": { "stage": 511, "flow": -9999 } }, "lro": { "minorCS": "< 0.05", "moderateCS": "< 0.05", "majorCS": "< 0.05", "producedTime": "2026-11-01T20:31:50Z", "interval": "NDJ" }, "crests": { "historic": [ { "occurredTime": "1886-04-06T00:00:00Z", "stage": 525.1, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1916-07-15T00:00:00Z", "stage": 519.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1936-04-11T00:00:00Z", "stage": 518.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1961-02-26T00:00:00Z", "stage": 517.8, "flow": 74800, "preliminary": "O", "olddatum": false }, { "occurredTime": "1933-01-02T00:00:00Z", "stage": 517.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1946-02-16T00:00:00Z", "stage": 517.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1951-03-31T00:00:00Z", "stage": 516.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-02-17T00:00:00Z", "stage": 515.4299999999998, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1949-01-07T00:00:00Z", "stage": 515, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-04-14T00:00:00Z", "stage": 514.65, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1977-04-05T00:00:00Z", "stage": 514.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1980-03-28T00:00:00Z", "stage": 513.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-03-21T00:00:00Z", "stage": 512.6900000000002, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-10-04T09:00:00Z", "stage": 512.6799999999998, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-03-04T04:30:00Z", "stage": 512.44, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-11-24T00:00:00Z", "stage": 511.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-10-27T00:00:00Z", "stage": 511.48, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-05-08T10:00:00Z", "stage": 511.38, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2013-05-06T22:00:00Z", "stage": 511.33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-05-19T15:30:00Z", "stage": 511.33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1989-06-21T00:00:00Z", "stage": 511.26, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-10-26T00:00:00Z", "stage": 511.03, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-02-24T10:30:00Z", "stage": 511, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2002-03-31T00:00:00Z", "stage": 510.71, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-03-08T05:00:00Z", "stage": 510.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-09-17T00:00:00Z", "stage": 509.16, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-01-26T00:00:00Z", "stage": 509.16, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2006-01-24T00:00:00Z", "stage": 508.09, "flow": 0, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2019-03-04T04:30:00Z", "stage": 512.44, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-02-24T10:30:00Z", "stage": 511, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2013-05-06T22:00:00Z", "stage": 511.33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2006-01-24T00:00:00Z", "stage": 508.09, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-11-24T00:00:00Z", "stage": 511.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-09-17T00:00:00Z", "stage": 509.16, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-01-26T00:00:00Z", "stage": 509.16, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-05-19T15:30:00Z", "stage": 511.33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-05-08T10:00:00Z", "stage": 511.38, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2002-03-31T00:00:00Z", "stage": 510.71, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-10-26T00:00:00Z", "stage": 511.03, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-10-27T00:00:00Z", "stage": 511.48, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-03-08T05:00:00Z", "stage": 510.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-10-04T09:00:00Z", "stage": 512.6799999999998, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-03-21T00:00:00Z", "stage": 512.6900000000002, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-02-17T00:00:00Z", "stage": 515.4299999999998, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1989-06-21T00:00:00Z", "stage": 511.26, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1980-03-28T00:00:00Z", "stage": 513.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-04-14T00:00:00Z", "stage": 514.65, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1977-04-05T00:00:00Z", "stage": 514.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1961-02-26T00:00:00Z", "stage": 517.8, "flow": 74800, "preliminary": "O", "olddatum": false }, { "occurredTime": "1951-03-31T00:00:00Z", "stage": 516.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1949-01-07T00:00:00Z", "stage": 515, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1946-02-16T00:00:00Z", "stage": 517.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1936-04-11T00:00:00Z", "stage": 518.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1933-01-02T00:00:00Z", "stage": 517.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1916-07-15T00:00:00Z", "stage": 519.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1886-04-06T00:00:00Z", "stage": 525.1, "flow": 0, "preliminary": "R", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 520, "statement": "Widespread and severe residential flooding in Gadsden and adjacent areas along the Coosa River occurs. " }, { "stage": 517, "statement": "Low elevations of Highway 411 begin to flood. Considerable residential flooding also occurs at this level. " }, { "stage": 514, "statement": "Considerable residential flooding occurs in Gadsden and adjacent areas along the Coosa River. Areas from Lonz Street to Aaron Way in eastern Gadsden are vulnerable to flooding as water reaches this stage and higher. " }, { "stage": 512, "statement": "Some residential flooding begins in the Gadsden area. " }, { "stage": 511, "statement": "Low lying farm lands in the Gadsden area begin to flood. " } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/GAPA1.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/GAPA1.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/GAPA1.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/GAPA1.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/GAPA1.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/GAPA1.volume.exceed.90day.gif" }, "shortrange": "" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/gapa1_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/gapa1_record.png" }, "photos": [] }, "dataAttribution": [ { "abbrev": "USGS", "text": "02400500", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=02400500" }, { "abbrev": "COE", "text": "Website", "title": "Observations courtesy of U.S. Army Corps of Engineers", "url": "https://water.sam.usace.army.mil/" } ], "impactsLowWaters": [ { "value": "508 Ft", "impact": "Normal elevation of H. Neely Henry Lake (roughly 15 mi. south of Gadsden). Alabama Power keeps lake level fairly stable." }, { "value": "505 Ft", "impact": "Normal elevation of H. Neely Henry Lake." }, { "value": "500 Ft", "impact": "Bottom of H. Neely Henry Lake (roughly 15 mi south of Gadsden)." }, { "value": "496 Ft", "impact": "Critical level of H. Neely Henry Dam that would impact hydropower production." } ], "normalThreshold": { "value": 0, "units": "ft" }, "hydronotes": [ { "statement": "River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.", "effective": "0101", "expiration": "1231" }, { "statement": "Gauge reading affected by reservoir operations.", "effective": "0101", "expiration": "1231" } ], "datums": { "vertical": { "value": [] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "CREA1", "downstreamLid": "RGLA1", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued as needed during times of high water, but are not routinely available.", "TruncateObs": "-1", "TruncateFcst": "7", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "fcst_not_current" }