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"1969-10-07T00:00:00Z", "stage": 12.78, "flow": 56600, "preliminary": "O", "olddatum": false }, { "occurredTime": "1969-04-13T00:00:00Z", "stage": 18.36, "flow": 105000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1969-02-26T00:00:00Z", "stage": 19.32, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1968-06-26T00:00:00Z", "stage": 13.92, "flow": 71000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1968-01-24T00:00:00Z", "stage": 16.22, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1967-06-17T00:00:00Z", "stage": 22.95, "flow": 166000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1965-10-01T00:00:00Z", "stage": 14.5, "flow": 90100, "preliminary": "O", "olddatum": true }, { "occurredTime": "1965-05-26T00:00:00Z", "stage": 15.65, "flow": 94200, "preliminary": "O", "olddatum": true }, { "occurredTime": "1964-06-17T00:00:00Z", "stage": 17.46, "flow": 108000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1963-06-25T00:00:00Z", "stage": 15.66, "flow": 92400, "preliminary": "O", "olddatum": true }, { "occurredTime": "1962-03-31T00:00:00Z", "stage": 20.65, "flow": 151000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1961-06-15T00:00:00Z", "stage": 11.42, "flow": 55800, "preliminary": "O", "olddatum": true }, { "occurredTime": "1960-04-05T00:00:00Z", "stage": 21.43, "flow": 178000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1952-04-18T00:00:00Z", "stage": 26.57, "flow": 414000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1950-04-28T00:00:00Z", "stage": 20.95, "flow": 185000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1949-04-13T00:00:00Z", "stage": 20.32, "flow": 182000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1944-06-15T00:00:00Z", "stage": 19.7, "flow": 214000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1943-04-14T00:00:00Z", "stage": 19.88, "flow": 181000, "preliminary": "O", "olddatum": true }, { "occurredTime": "1881-04-27T00:00:00Z", "stage": 18.03, "flow": 0, "preliminary": "O", "olddatum": true } ] }, "lowWaters": { "historic": [ { "occurredTime": "1960-12-24T00:00:00Z", "stage": -0.28, "flow": -9999, "statement": "MINIMUM GAGE HEIGHT OBSERVED (FREEZEUP)." }, { "occurredTime": "1963-12-12T00:00:00Z", "stage": 0.25, "flow": -9999, "statement": "MINIMUM GAGE HEIGHT DUE TO FREEZEUP." }, { "occurredTime": "1971-01-07T00:00:00Z", "stage": 0.4, "flow": -9999, "statement": "MINIMUM GAGE HEIGHT FOR THE YEAR." }, { "occurredTime": "1964-12-19T00:00:00Z", "stage": 0.52, "flow": -9999, "statement": "MINIMUM GAGE HEIGHT DUE TO FREEZEUP." }, { "occurredTime": "2024-01-13T00:00:00Z", "stage": 0.61, "flow": -9999, "statement": "" } ] }, "impacts": [ { "stage": 27, "statement": "Water nears the top of the federal levees." }, { "stage": 25.5, "statement": "Highway 2 may begin to flood." }, { "stage": 25, "statement": "Though not in danger of flooding yet, flood preparations begin for critical facilities along this portion of the river." }, { "stage": 23, "statement": "Areas and infrastructure along, and including, North First Street flood in Nebraska City. " }, { "stage": 20, "statement": "Though flooding is already ongoing, this is the level when flooding starts becoming more impactful, especially to agricultural areas." }, { "stage": 17, "statement": "Agricultural lowlands along the river begin to flood." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/NEBN1.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/NEBN1.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/NEBN1.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/NEBN1.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/NEBN1.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/NEBN1.volume.exceed.90day.gif" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/NEBN1.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/nebn1_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/nebn1_record.png" }, "photos": [ { "id": "6092938135802679790", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 40.681778, -95.847111 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/nebn1/6092938135802679790.jpeg", "caption": "USGS gauge house" } } ] }, "dataAttribution": [ { "abbrev": "USGS", "text": "06807000", "title": "Observations courtesy of the USGS", "url": "https://waterdata.usgs.gov/monitoring-location/06807000" } ], "impactsLowWaters": [ { "value": "0.5", "impact": "This is the lower operating limit for the gage." }, { "value": "1.5", "impact": "Water intake structures along this stretch of the river begin to be monitored for possible exposure." }, { "value": "-2.5", "impact": "Water intake structures begin to be shutoff at this level." } ], "normalThreshold": null, "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": "0401", "expiration": "0930" }, { "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": "1001", "expiration": "0331" }, { "statement": "Stage may be affected by ice.", "effective": "1101", "expiration": "0331" } ], "datums": { "vertical": { "value": [ { "label": "North American Vertical Datum of 1988", "abbrev": "NAVD88", "description": "A fixed reference for elevations determined by geodetic leveling. The datum was derived from a general adjustment of the first-order terrestrial leveling nets of the United States, Canada, and Mexico. In the adjustment, only the height of the primary tidal bench mark, referenced to the International Great Lakes Datum of 1985 (IGLD 85) local mean sea level height value, at Father Point, Rimouski, Quebec, Canada was held fixed, thus providing minimum constraint. NAVD 88 and IGLD 85 are identical. However, NAVD 88 bench mark values are given in Helmert orthometric height units while IGLD 85 values are in dynamic heights. See International Great Lakes Datum of 1985, National Geodetic Vertical Datum of 1929, and geopotential difference. NAVD 88 should not be used as Mean Sea Level.", "value": 905.61 } ] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "PTMN1", "downstreamLid": "BRON1", "inService": { "enabled": true, "message": "" }, "lowThreshold": { "units": "ft", "value": 1.5 }, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "-1", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }