{ "lid": "COLL1", "usgsId": "07367630", "reachId": "19434004", "name": "Ouachita River at Columbia Lock and Dam", "description": "", "rfc": { "abbreviation": "LMRFC", "name": "Lower Mississippi River Forecast Center" }, "wfo": { "abbreviation": "SHV", "name": "Shreveport" }, "state": { "abbreviation": "LA", "name": "Louisiana" }, "county": "Caldwell", "timeZone": "CST6CDT", "latitude": 32.1668, "longitude": -92.1126, "pedts": { "observed": "HPIRZ", "forecast": "HPIFF" }, "status": { "observed": { "primary": 49, "primaryUnit": "ft", "secondary": 28.6, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-08-30T08:00:00Z" }, "forecast": { "primary": 49, "primaryUnit": "ft", "secondary": 28.6, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-08-31T06:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 70, "flow": 120000 }, "moderate": { "stage": 67, "flow": 94200 }, "minor": { "stage": 65, "flow": 83000 }, "action": { "stage": 62, "flow": 68700 } }, "lro": null, "crests": { "historic": [ { "occurredTime": "1991-05-05T00:00:00Z", "stage": 72.37, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1973-05-13T00:00:00Z", "stage": 70.65, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-11-12T00:00:00Z", "stage": 69.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1983-01-09T00:00:00Z", "stage": 69.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-03-18T07:30:00Z", "stage": 68.9, "flow": 105000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-03-28T07:00:00Z", "stage": 68.4, "flow": 102000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2001-03-19T00:00:00Z", "stage": 68.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-05-24T06:00:00Z", "stage": 68.2, "flow": 101000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-12-31T00:00:00Z", "stage": 67.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-05-13T00:00:00Z", "stage": 67.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1975-05-17T00:00:00Z", "stage": 67.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1974-02-02T00:00:00Z", "stage": 67, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-05-30T00:00:00Z", "stage": 65.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-04-08T00:00:00Z", "stage": 64.67, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1989-04-18T00:00:00Z", "stage": 62.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1988-02-02T00:00:00Z", "stage": 61.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1980-04-25T00:00:00Z", "stage": 60.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1994-03-16T00:00:00Z", "stage": 60.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1984-03-12T00:00:00Z", "stage": 58, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1987-04-01T00:00:00Z", "stage": 57.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1992-03-28T00:00:00Z", "stage": 56.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1978-05-20T00:00:00Z", "stage": 55.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-04-21T00:00:00Z", "stage": 55.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1976-03-25T00:00:00Z", "stage": 54.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1986-12-28T00:00:00Z", "stage": 54.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1977-04-25T00:00:00Z", "stage": 52.96, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1985-02-27T00:00:00Z", "stage": 51.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1981-06-14T00:00:00Z", "stage": 50, "flow": 0, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2019-05-24T06:00:00Z", "stage": 68.2, "flow": 101000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-03-18T07:30:00Z", "stage": 68.9, "flow": 105000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-03-28T07:00:00Z", "stage": 68.4, "flow": 102000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-11-12T00:00:00Z", "stage": 69.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-05-30T00:00:00Z", "stage": 65.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2001-03-19T00:00:00Z", "stage": 68.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1994-03-16T00:00:00Z", "stage": 60.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-04-21T00:00:00Z", "stage": 55.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1992-03-28T00:00:00Z", "stage": 56.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1991-05-05T00:00:00Z", "stage": 72.37, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1990-04-08T00:00:00Z", "stage": 64.67, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1989-04-18T00:00:00Z", "stage": 62.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1988-02-02T00:00:00Z", "stage": 61.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1987-04-01T00:00:00Z", "stage": 57.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1986-12-28T00:00:00Z", "stage": 54.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1985-02-27T00:00:00Z", "stage": 51.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1984-03-12T00:00:00Z", "stage": 58, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1983-01-09T00:00:00Z", "stage": 69.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-12-31T00:00:00Z", "stage": 67.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1981-06-14T00:00:00Z", "stage": 50, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1980-04-25T00:00:00Z", "stage": 60.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-05-13T00:00:00Z", "stage": 67.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1978-05-20T00:00:00Z", "stage": 55.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1977-04-25T00:00:00Z", "stage": 52.96, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1976-03-25T00:00:00Z", "stage": 54.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1975-05-17T00:00:00Z", "stage": 67.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1974-02-02T00:00:00Z", "stage": 67, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-05-13T00:00:00Z", "stage": 70.65, "flow": 0, "preliminary": "O", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 75, "statement": "Thousands of acres of land flood between and near the levees. Some topping of levees may possible downstream from Columbia." }, { "stage": 70, "statement": "Lowland flooding will continue to slowly recede, but the river will remain above flood stage for several more days." }, { "stage": 67, "statement": "The Columbia Lock and Dam recreational area floods and must be closed. In addition, expect moderate to severe flooding of lowland river bottoms between and near levee systems." }, { "stage": 65, "statement": "The riverton recreational area floods and must be closed. In addition, expect minor flooding of lowland river bottoms." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/COLL1.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/COLL1.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/COLL1.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/COLL1.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/COLL1.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/COLL1.volume.exceed.90day.gif" }, "shortrange": "" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/coll1_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/coll1_record.png" }, "photos": [] }, "dataAttribution": [ { "abbrev": "US Army Corps of Engineers", "text": "US Army Corps of Engineers", "title": "US Army Corps of Engineers", "url": "http://www.mvk.usace.army.mil/" }, { "abbrev": "USGS", "text": "07367630", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=07367630" } ], "impactsLowWaters": [], "normalThreshold": { "value": 52, "units": "ft" }, "hydronotes": [ { "statement": "River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.", "effective": "0101", "expiration": "1231" } ], "datums": { "vertical": { "value": [] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "MLUL1", "downstreamLid": "JNEL1", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "5", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }