{
  "lid": "ALMW3",
  "usgsId": "",
  "reachId": "2118214",
  "name": "Mississippi River below Lock and Dam 4 - Alma",
  "description": "",
  "rfc": {
    "abbreviation": "NCRFC",
    "name": "North Central River Forecast Center"
  },
  "wfo": {
    "abbreviation": "ARX",
    "name": "La Crosse"
  },
  "state": {
    "abbreviation": "WI",
    "name": "Wisconsin"
  },
  "county": "Buffalo",
  "timeZone": "CST6CDT",
  "latitude": 44.324,
  "longitude": -91.9185,
  "pedts": {
    "observed": "HTIRG",
    "forecast": "HTIFF"
  },
  "status": {
    "observed": {
      "primary": 4.4,
      "primaryUnit": "ft",
      "secondary": 16,
      "secondaryUnit": "kcfs",
      "floodCategory": "no_flooding",
      "validTime": "2026-10-24T22:15:00Z"
    },
    "forecast": {
      "primary": 4.4,
      "primaryUnit": "ft",
      "secondary": 16,
      "secondaryUnit": "kcfs",
      "floodCategory": "no_flooding",
      "validTime": "2026-10-25T00:00:00Z"
    }
  },
  "flood": {
    "stageUnits": "ft",
    "flowUnits": "cfs",
    "categories": {
      "major": {
        "stage": 18,
        "flow": -9999
      },
      "moderate": {
        "stage": 17,
        "flow": -9999
      },
      "minor": {
        "stage": 16,
        "flow": -9999
      },
      "action": {
        "stage": 10,
        "flow": -9999
      }
    },
    "lro": {
      "minorCS": "< 0.05",
      "moderateCS": "< 0.05",
      "majorCS": "< 0.05",
      "producedTime": "2026-10-23T23:02:18Z",
      "interval": "OND"
    },
    "crests": {
      "historic": [
        {
          "occurredTime": "1965-04-19T00:00:00Z",
          "stage": 19.78,
          "flow": 269000,
          "preliminary": "R",
          "olddatum": false
        },
        {
          "occurredTime": "2001-04-16T19:00:00Z",
          "stage": 18.15,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1969-04-18T00:00:00Z",
          "stage": 17.53,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2023-04-25T08:30:00Z",
          "stage": 17.05,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1952-04-18T00:00:00Z",
          "stage": 16.3,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1951-04-16T00:00:00Z",
          "stage": 16.2,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1997-04-11T00:00:00Z",
          "stage": 15.6,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1967-04-05T00:00:00Z",
          "stage": 15.35,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1993-06-25T00:00:00Z",
          "stage": 14.93,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2011-04-14T13:00:00Z",
          "stage": 14.75,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2010-09-29T13:00:00Z",
          "stage": 12.34,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        }
      ],
      "recent": [
        {
          "occurredTime": "2023-04-25T08:30:00Z",
          "stage": 17.05,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2011-04-14T13:00:00Z",
          "stage": 14.75,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2010-09-29T13:00:00Z",
          "stage": 12.34,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "2001-04-16T19:00:00Z",
          "stage": 18.15,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1997-04-11T00:00:00Z",
          "stage": 15.6,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1993-06-25T00:00:00Z",
          "stage": 14.93,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1969-04-18T00:00:00Z",
          "stage": 17.53,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1967-04-05T00:00:00Z",
          "stage": 15.35,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1965-04-19T00:00:00Z",
          "stage": 19.78,
          "flow": 269000,
          "preliminary": "R",
          "olddatum": false
        },
        {
          "occurredTime": "1952-04-18T00:00:00Z",
          "stage": 16.3,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        },
        {
          "occurredTime": "1951-04-16T00:00:00Z",
          "stage": 16.2,
          "flow": 0,
          "preliminary": "O",
          "olddatum": false
        }
      ]
    },
    "lowWaters": {
      "historic": []
    },
    "impacts": [
      {
        "stage": 20,
        "statement": "Water reaches the top of the protective earthen dike."
      },
      {
        "stage": 19.8,
        "statement": "The water reaches the flood of record set in 1965."
      },
      {
        "stage": 16.5,
        "statement": "Agriculture and recreational land is flooded."
      },
      {
        "stage": 16,
        "statement": "Lock gates and walls at Dam 4 go underwater."
      },
      {
        "stage": 15.5,
        "statement": "Lock and Dam 4 is closed to navigation."
      }
    ]
  },
  "images": {
    "probability": {
      "weekint": {
        "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/ALMW3.SSTG.prob.weekint.gif",
        "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/ALMW3.QINE.prob.weekint.gif",
        "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/ALMW3.volume.prob.weekint.gif"
      },
      "entperiod": {
        "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/ALMW3.SSTG.exceed.90day.gif",
        "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/ALMW3.QINE.exceed.90day.gif",
        "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/ALMW3.volume.exceed.90day.gif"
      },
      "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/ALMW3.shortrange.hefs.png"
    },
    "hydrograph": {
      "default": "https://water.noaa.gov/resources/hydrographs/almw3_hg.png",
      "floodcat": "https://water.noaa.gov/resources/hydrographs/almw3_record.png"
    },
    "photos": [
      {
        "id": "17822419750172824046",
        "type": "Feature",
        "geometry": {
          "type": "Point",
          "coordinates": [
            44.324,
            -91.9185
          ]
        },
        "properties": {
          "image": "https://water.noaa.gov/resources/photos/almw3/17822419750172824046.jpeg",
          "caption": "Downstream view at Alma, September 11th, 2012, Stage = 4.47 ft"
        }
      },
      {
        "id": "17859491137617990126",
        "type": "Feature",
        "geometry": {
          "type": "Point",
          "coordinates": [
            44.324,
            -91.9185
          ]
        },
        "properties": {
          "image": "https://water.noaa.gov/resources/photos/almw3/17859491137617990126.jpeg",
          "caption": "Upstream view at Alma, September 11th, 2012, Stage = 4.47 ft"
        }
      }
    ]
  },
  "dataAttribution": [
    {
      "abbrev": "US Army Corps of Engineers",
      "text": "USACE - Building Strong",
      "title": "Observations courtesy of U.S. Army Corps of Engineers",
      "url": "https://water.usace.army.mil/office/mvp/location/LockDam_04"
    }
  ],
  "impactsLowWaters": [],
  "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"
    }
  ],
  "datums": {
    "vertical": {
      "value": []
    },
    "horizontal": {
      "value": []
    },
    "notes": {
      "value": []
    }
  },
  "inundation": {
    "enabled": false,
    "url": "",
    "zeroDatum": null,
    "downloads": null,
    "siteSpecificInfo": "",
    "dataAttribution": []
  },
  "upstreamLid": "WABM5",
  "downstreamLid": "AMAW3",
  "inService": {
    "enabled": true,
    "message": ""
  },
  "lowThreshold": null,
  "forecastReliability": "Forecasts are issued routinely during the navigation season, and as needed at other times of the year.",
  "TruncateObs": "-1",
  "TruncateFcst": "7",
  "ObservedFloodCategory": "no_flooding",
  "ForecastFloodCategory": "no_flooding"
}