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Apalachicola-Chattahoochee-Flint (ACF) River Basin Drought & Water Dashboard

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The Drought.gov team reformats data from multiple partners into web- and GIS-ready formats, which we use throughout Drought.gov. These data, hosted on Google Cloud Storage, are free for all to download or reference directly from their web applications.

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Statistics
Dataset Name

USGS 28-Day Average Streamflow: Percent Below Normal

Update Schedule
Updates Weekly (Thursdays)
Last Update
07/16/24

Summary table information from the U.S. Geological Survey was ingested and parsed to provide 28-day average streamflow statistics at the watershed level. Data are updated weekly on Thursdays.

Source(s)
Dataset Name

ACF Basin Counties with USDA Disaster Designations

Update Schedule
Updates Weekly
Last Update
07/16/24

A list of counties with disaster designations were ingested from the U.S. Department of Agriculture. Counties within the ACF were parsed and summed to identify the total number of counties with this designation.

Source(s)
Dataset Name

Precipitation Ranking: Wettest/Driest Month

Update Schedule
Updates Weekly
Last Update
07/16/24

Monthly state-level precipitation ranks were ingested from the National Centers for Environmental Information (NCEI) Climate at a Glance page. NCEI provides the rank data in XML, CSV, and JSON formats.

Source(s)
Dataset Name

Precipitation Ranking: Wettest/Driest Calendar Year to Date

Update Schedule
Updates Weekly
Last Update
07/16/24

State-level precipitation ranks for the calendar year to date (i.e., January through the current month) were ingested from the National Centers for Environmental Information (NCEI) Climate at a Glance page. NCEI provides the rank data in XML, CSV, and JSON formats.

Source(s)

All Map Sections for the Dashboard

Maps
Dataset Name

U.S. Drought Monitor

Update Schedule
Data Valid
Last Update
07/09/24

U.S. Drought Monitor (USDM) data from the National Drought Mitigation Center were available in a GIS format.

Source(s)
Update Schedule

The U.S. Drought Monitor map is updated weekly on Thursday mornings, with data valid through the previous Tuesday at 7 am Eastern.

Map
Dataset Name

Precipitation 30-day % of Normal (gridMET, NLDAS)

Update Schedule
Data Valid
Last Update
07/13/24

The GridMET and NLDAS precipitation datasets from Climate Engine were available in raster format.  Precipitation data update daily but are delayed from the current day by 3 to 4 days to allow for data collection and quality control.

Source(s)
Update Schedule

Precipitation data are updated daily, with a delay of 3 to 4 days to allow for data collection and quality control.

Dataset Name

Lawn and Garden Moisture Index

Update Schedule
Updates Daily
Last Update
07/16/24

Lawn and Garden Moisture Index data are available in gridded text format from the Alabama Office of the State Climatologist. Data are ingested and joined to a spatial grid for visualization.

Source(s)
Update Schedule

The Lawn and Garden Moisture Index is updated daily.

Stats

This graph shows the year-to-date composite conservation storage (in acre-feet) for the ACF River Basin—that is, the combined storage of Lake Sidney Lanier, West Point Lake, and Walter F. George Lake—as well as forecast storage for the next 4 weeks (orange line). The U.S. Army Corps of Engineers (USACE) categorizes conservation storage into 5 action zones, which trigger drought operations in the ACF River Basin:

  • Zones 1 and 2: Not classified as drought conditions, normal operations are in place.
  • Zone 3: Drought contingency operations are triggered, hydropower is supported at a reduced level.
  • Zone 4: Severe drought conditions exist, navigation is not supported, hydropower is likely to be generated only during concurrent use.
  • Drought Zone: Emergency drought operations are triggered, hydropower will only be met as a result of meeting other project purposes.

View this graph on the USACE website.

View USACE Reservoir Information

Maps
Dataset Name

ACF River Basin Lake Levels + Forecasts

Update Schedule
Data Valid
Last Update
07/16/24

Current lake level information is ingested daily from the U.S. Army Corps of Engineers website. Lake level forecast data are ingested weekly via parsed PDF file. Current and forecasted lake data are joined to a shapefile for visualization.

Source(s)
Update Schedule

Reservoir data from the U.S. Army Corps of Engineers are updated daily.

Map
Dataset Name

USGS Streamflow Conditions

Update Schedule
Data Valid
Last Update
07/16/24

Streamflow data were available in a GIS format from the U.S. Geological Survey (USGS) WaterWatch. Current U.S. Drought Monitor conditions were available from the National Drought Mitigation Center.

Source(s)
Update Schedule

This map updates daily on Drought.gov. View the most recent real-time streamflow data via USGS.

Map
Dataset Name

USGS Streamflow Conditions: 28-Day Average

Update Schedule
Data Valid
Last Update
07/16/24

Streamflow data were available in a GIS format from the U.S. Geological Survey (USGS) WaterWatch. 

Source(s)
Update Schedule

This map updates daily on Drought.gov. View the most recent real-time streamflow data via USGS.

Dataset Name

ACF River Basin Composite Conservation + Flood Storage

Update Schedule
Data Valid
Last Update
07/09/24

Year-to-date composite conservation and flood storage for the ACF River Basin is available as a PDF from the U.S. Army Corps of Engineers. 

Source(s)
Update Schedule

The U.S. Army Corps of Engineers updates this graph weekly.

Map Cards
Map
Data Valid: Start Date
first day of +1 month
Data Valid: End Date
last day of +1 month
Dataset Name

CPC U.S. Monthly Drought Outlook

Last Update
06/30/24

Drought outlooks from NOAA's Climate Prediction Center (CPC) were available in a GIS format. For more details about the current Monthly Drought Outlook map, read the latest monthly assessment from CPC.

Source(s)
Update Schedule

The Climate Prediction Center issues its Monthly Drought Outlooks on the last day of the calendar month.

Map
Data Valid: Start Date
+0 days
Data Valid: End Date
last day of +3 months
Dataset Name

CPC U.S. Seasonal Drought Outlook

Last Update
06/30/24

Drought outlooks from NOAA's Climate Prediction Center (CPC) were available in a GIS format. For more details about the current Seasonal Drought Outlook map, read the latest seasonal assessment from CPC.

Source(s)
Update Schedule

The Climate Prediction Center issues its Seasonal Drought Outlooks on the third Thursday of each calendar month. Sometimes, the map is adjusted on the last day of the month to maintain consistency with the Monthly Drought Outlook.

Map
Data Valid: Start Date
+0 days
Data Valid: End Date
+1 days
Dataset Name

Quantitative Precipitation Forecast: Day 1

Last Update
07/16/24

Produced by the National Weather Service's Weather Prediction Center, this Quantitative Precipitation Forecast shows the amount of liquid precipitation expected to fall over the next 24 hours. (In the case of snow or ice, the forecast represents the amount of liquid that will be measured when the precipitation is melted.) Precipitation amounts can vary significantly over short distances, especially when thunderstorms occur, so the Quantitative Precipitation Forecast is defined as the expected "areal average" (on a 20 x 20 km grid) in inches.

Quantitative Precipitation Forecast (QPF) data were available in a GIS format from the National Weather Service's Weather Prediction Center. The QPF maps on Drought.gov are updated daily and are valid from 12z (7 a.m. Eastern) that day.

Source(s)
Update Schedule

The Quantitative Precipitation Forecast maps on Drought.gov are updated once a day and are valid from 7 a.m. Eastern that day.

Map
Data Valid: Start Date
+0 days
Data Valid: End Date
+7 days
Dataset Name

Quantitative Precipitation Forecast: Day 1–7

Last Update
07/16/24

Produced by the National Weather Service's Weather Prediction Center, this Quantitative Precipitation Forecast shows the amount of liquid precipitation expected to fall over the next 7 days. (In the case of snow or ice, the forecast represents the amount of liquid that will be measured when the precipitation is melted.) Precipitation amounts can vary significantly over short distances, especially when thunderstorms occur, so the Quantitative Precipitation Forecast is defined as the expected "areal average" (on a 20 x 20 km grid) in inches. Learn more.

Quantitative Precipitation Forecast (QPF) data were available in a GIS format from the National Weather Service's Weather Prediction Center. The QPF maps on Drought.gov are updated daily and are valid from 12z (7 a.m. Eastern) that day.

Source(s)
Update Schedule

The Quantitative Precipitation Forecast maps on Drought.gov are updated once a day and are valid from 7 a.m. Eastern that day.