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          "occurredTime": "2011-03-23T00:00:00Z",
          "stage": 7.55,
          "flow": 3110,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2010-03-12T00:00:00Z",
          "stage": 11.2,
          "flow": 6380,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2009-02-11T00:00:00Z",
          "stage": 6.74,
          "flow": 2180,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2008-06-08T00:00:00Z",
          "stage": 18.74,
          "flow": 13100,
          "preliminary": "R",
          "olddatum": false
        },
        {
          "occurredTime": "2007-03-15T00:00:00Z",
          "stage": 9.47,
          "flow": 4270,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2006-04-03T02:30:00Z",
          "stage": 7.06,
          "flow": 2370,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2005-04-19T00:00:00Z",
          "stage": 10.84,
          "flow": 5610,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2004-05-22T00:00:00Z",
          "stage": 14.67,
          "flow": 9990,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2003-05-11T00:00:00Z",
          "stage": 6.84,
          "flow": 2060,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2002-08-06T00:00:00Z",
          "stage": 6.92,
          "flow": 2120,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2001-04-12T00:00:00Z",
          "stage": 11.83,
          "flow": 6430,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2000-06-16T00:00:00Z",
          "stage": 6.76,
          "flow": 2020,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1999-07-21T00:00:00Z",
          "stage": 11.84,
          "flow": 6100,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1998-06-24T00:00:00Z",
          "stage": 8.01,
          "flow": 2750,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1997-03-11T00:00:00Z",
          "stage": 9.32,
          "flow": 3640,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1996-03-25T00:00:00Z",
          "stage": 6.34,
          "flow": 1270,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1995-06-07T00:00:00Z",
          "stage": 6.81,
          "flow": 1980,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1994-07-16T00:00:00Z",
          "stage": 7.26,
          "flow": 2330,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1993-04-01T00:00:00Z",
          "stage": 12.59,
          "flow": 7190,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1992-03-09T00:00:00Z",
          "stage": 8.25,
          "flow": 3150,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1991-05-18T00:00:00Z",
          "stage": 11.58,
          "flow": 5630,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1990-08-25T00:00:00Z",
          "stage": 7.86,
          "flow": 2830,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1989-03-11T00:00:00Z",
          "stage": 5.3,
          "flow": 929,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1988-04-29T00:00:00Z",
          "stage": 4.67,
          "flow": 607,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1986-03-18T00:00:00Z",
          "stage": 9.4,
          "flow": 4200,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1985-03-11T00:00:00Z",
          "stage": 6.48,
          "flow": 1700,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1984-06-08T00:00:00Z",
          "stage": 11.94,
          "flow": 6540,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1983-03-07T00:00:00Z",
          "stage": 8.88,
          "flow": 3690,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1982-06-07T00:00:00Z",
          "stage": 9.16,
          "flow": 3940,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1981-06-24T00:00:00Z",
          "stage": 10.9,
          "flow": 5510,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1980-05-30T00:00:00Z",
          "stage": 11.66,
          "flow": 6250,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1979-08-23T00:00:00Z",
          "stage": 11.33,
          "flow": 5930,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1978-06-15T00:00:00Z",
          "stage": 7.36,
          "flow": 2430,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1977-05-05T00:00:00Z",
          "stage": 4.26,
          "flow": 360,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1976-03-12T00:00:00Z",
          "stage": 9,
          "flow": 3100,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1975-04-28T00:00:00Z",
          "stage": 10.48,
          "flow": 5130,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1974-03-03T00:00:00Z",
          "stage": 7.26,
          "flow": 2100,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1973-03-11T00:00:00Z",
          "stage": 9.37,
          "flow": 3700,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1972-09-28T00:00:00Z",
          "stage": 6.65,
          "flow": 1890,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1971-04-01T00:00:00Z",
          "stage": 8.24,
          "flow": 3150,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1970-05-30T00:00:00Z",
          "stage": 6.84,
          "flow": 2030,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1969-07-08T00:00:00Z",
          "stage": 12.25,
          "flow": 6850,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1968-06-27T00:00:00Z",
          "stage": 7.3,
          "flow": 2370,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1967-06-10T00:00:00Z",
          "stage": 6,
          "flow": 1400,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1966-02-09T00:00:00Z",
          "stage": 8.52,
          "flow": 2300,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1965-04-11T00:00:00Z",
          "stage": 14.27,
          "flow": 9700,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1964-09-09T00:00:00Z",
          "stage": 4.85,
          "flow": 1620,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1963-07-19T00:00:00Z",
          "stage": 8.86,
          "flow": 4120,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1962-08-31T00:00:00Z",
          "stage": 13.06,
          "flow": 8510,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1961-03-27T00:00:00Z",
          "stage": 14.8,
          "flow": 10500,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1960-03-28T00:00:00Z",
          "stage": 5.98,
          "flow": 2320,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1959-05-21T00:00:00Z",
          "stage": 7.33,
          "flow": 3040,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1958-06-04T00:00:00Z",
          "stage": 3.83,
          "flow": 955,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1957-05-30T00:00:00Z",
          "stage": 3.58,
          "flow": 1090,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1956-04-01T00:00:00Z",
          "stage": 4.15,
          "flow": 1360,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1955-06-03T00:00:00Z",
          "stage": 5.75,
          "flow": 2330,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1954-06-21T00:00:00Z",
          "stage": 11.85,
          "flow": 7060,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1953-08-03T00:00:00Z",
          "stage": 4.73,
          "flow": 1730,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1952-03-30T00:00:00Z",
          "stage": 8.7,
          "flow": 4360,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1951-04-07T00:00:00Z",
          "stage": 12.44,
          "flow": 7560,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1950-03-07T00:00:00Z",
          "stage": 7.3,
          "flow": 3310,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1949-03-04T00:00:00Z",
          "stage": 7.4,
          "flow": 3310,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1948-02-28T00:00:00Z",
          "stage": 11.22,
          "flow": 5000,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1947-06-30T00:00:00Z",
          "stage": 8.8,
          "flow": 4360,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1946-03-14T00:00:00Z",
          "stage": 6.9,
          "flow": 2970,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1945-03-11T00:00:00Z",
          "stage": 10.22,
          "flow": 4600,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1944-06-12T00:00:00Z",
          "stage": 12.2,
          "flow": 7020,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1943-03-16T00:00:00Z",
          "stage": 7.93,
          "flow": 3760,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1941-11-01T00:00:00Z",
          "stage": 5.8,
          "flow": 2290,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1941-06-02T00:00:00Z",
          "stage": 4.4,
          "flow": 1500,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1940-03-29T00:00:00Z",
          "stage": 3.4,
          "flow": 980,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1939-03-13T00:00:00Z",
          "stage": 7.9,
          "flow": 3730,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1938-06-25T00:00:00Z",
          "stage": 10.29,
          "flow": 5850,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1937-03-05T00:00:00Z",
          "stage": 9.68,
          "flow": 5260,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1936-03-16T00:00:00Z",
          "stage": 6.1,
          "flow": 2520,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1935-03-05T00:00:00Z",
          "stage": 5.8,
          "flow": 2340,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1934-04-03T00:00:00Z",
          "stage": 4.1,
          "flow": 1470,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1933-03-30T00:00:00Z",
          "stage": 15.7,
          "flow": 10800,
          "preliminary": "O",
          "olddatum": false
        }
      ]
    },
    "lowWaters": {
      "historic": []
    },
    "impacts": [
      {
        "stage": 20.5,
        "statement": "Water affects the floodwall at the water treatment plant located at 13th St NE."
      },
      {
        "stage": 17.4,
        "statement": "Water reaches bottom of railroad bridge east of Kentucky Ave bridge."
      },
      {
        "stage": 15,
        "statement": "This is the approximate top of levee protection. Levees run from the 12th St NE bridge to 9th St along the east bank and also from 8th St to 6th St and Hampshire St."
      },
      {
        "stage": 14,
        "statement": "Water may flow over the city dikes."
      },
      {
        "stage": 12,
        "statement": "Widespread flooding occurs along the river. Some backwater effects are possible along Willow Creek between downtown Mason City and the confluence with the Winnebago river."
      },
      {
        "stage": 11,
        "statement": "Sandbagging occurs on the dike from 12th St NE to Carolina St."
      },
      {
        "stage": 10,
        "statement": "Widespread flooding occurs at city parks. Water reaches the underside of the 12th St NE bridge at the piers."
      },
      {
        "stage": 8,
        "statement": "Water affects east and west city parks in the 12th St NE area."
      },
      {
        "stage": 7,
        "statement": "Water affects low-lying areas along the river."
      }
    ]
  },
  "images": {
    "probability": {
      "weekint": {
        "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/MCWI4.SSTG.prob.weekint.gif",
        "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/MCWI4.QINE.prob.weekint.gif",
        "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/MCWI4.volume.prob.weekint.gif"
      },
      "entperiod": {
        "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/MCWI4.SSTG.exceed.90day.gif",
        "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/MCWI4.QINE.exceed.90day.gif",
        "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/MCWI4.volume.exceed.90day.gif"
      },
      "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/MCWI4.shortrange.hefs.png"
    },
    "hydrograph": {
      "default": "https://water.noaa.gov/resources/hydrographs/mcwi4_hg.png",
      "floodcat": "https://water.noaa.gov/resources/hydrographs/mcwi4_record.png"
    },
    "photos": []
  },
  "dataAttribution": [
    {
      "abbrev": "USGS",
      "text": "05459500",
      "title": "Observations courtesy of U.S. Geological Survey",
      "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=05459500"
    }
  ],
  "impactsLowWaters": [],
  "normalThreshold": null,
  "hydronotes": [],
  "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": 1069.51
        }
      ]
    },
    "horizontal": {
      "value": []
    },
    "notes": {
      "value": []
    }
  },
  "inundation": {
    "enabled": true,
    "url": "https://mapservices.weather.noaa.gov/static/rest/services/NWS_FIM/FIM_mcwi4/MapServer",
    "zeroDatum": {
      "value": 1069.51,
      "datum": "NAVD88"
    },
    "downloads": {
      "depthGrids": "https://water.noaa.gov/resources/downloads/fim/mcwi4/mcwi4_shapefiles.zip",
      "images": "https://water.noaa.gov/resources/downloads/fim/mcwi4/mcwi4_images.zip",
      "kmz": "https://water.noaa.gov/resources/downloads/fim/mcwi4/mcwi4_kmz.zip"
    },
    "siteSpecificInfo": "<ul>\n\t<li>These maps were developed in 2013 and are based on conditions at that time.  The accuracy of the maps may be reduced if natural or man-made changes occur to the river channel or flood plain in post-2013 conditions.  Examples of these changes include the development, modification or removal of flood protection systems such as levees or floodwalls, or the development, modification or removal of bridges and dams.</li>\n\t<li>These maps assume that all permanent flood protection measures such as levees or floodwalls in place when the maps were developed remain intact.  These maps will NOT show inundation in response to the failure of these protection measures such as breaching.</li>\n\t<li>These maps assume that no activities occur to temporarily change flood protection.  Examples of these activities include sandbagging, erection of HESCO flood barriers or the intentional breaching of levees or floodwalls.  The actual inundation in response to these activities may be more or less than what is indicated by the maps.</li>\n\t<li>These maps depict the impacts of the Winnebago River backwater on smaller local tributary streams.  The maps do not make any assumptions on the flow conditions on the local tributaries.  Mapping on smaller local tributary streams may not represent actual conditions during periods of high flows on the smaller local tributary streams.</li>\n\t<li>Willow Creek flow contributions have a significant influence on the magnitude and location of flooding in Mason City.  The Winnebago River flood depth maps at this location are representative of a typical flooding scenario which incorporates the most likely flow contributions from Willow Creek.  Additional medium and high Willow Creek flow contribution scenarios have been provided below the main map window to supplement the typical scenario maps.</li>\n\t<li>The Water Treatment Plant on 13th Street NE is protected by a floodwall that was constructed after the flood inundation map was completed.  The protection provided by the floodwall is not depicted on the flood inundation map however the Water Treatment Plant will remain protected by the floodwall until it is overtopped.</li>\n\t<li>These NWPS flood inundation maps--when compared to the regulatory FEMA DFIRM mapping--will depict different flooding scenarios.  The differences occur because NWPS and FEMA maps have been designed for different purposes and were developed based on different assumptions.</li>\n\t<li>For any questions or concerns contact your local NWS office.</li>\n</ul>\n",
    "dataAttribution": [
      {
        "text": "USGS",
        "title": "Observations courtesy of the US Geological Survey",
        "url": "",
        "image": "https://water.noaa.gov/resources/fim/"
      },
      {
        "text": "State",
        "title": "IA State Partner",
        "url": "",
        "image": "https://water.noaa.gov/resources/fim/"
      },
      {
        "text": "Partner1",
        "title": "Maps produced in partnership with the Iowa Flood Center.",
        "url": "https://iowafloodcenter.uiowa.edu/",
        "image": "https://water.noaa.gov/resources/fim/mcwi4-partner-01.png"
      }
    ]
  },
  "upstreamLid": "MCKI4",
  "downstreamLid": "MCII4",
  "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": "-1",
  "ObservedFloodCategory": "no_flooding",
  "ForecastFloodCategory": "fcst_not_current"
}