Please note: Due to scheduled maintenance impacting NOAA's National Centers for Environmental Information from February 4–6, some Drought.gov maps and statistics may be delayed. We apologize for any inconvenience.

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

Looking for More Data?

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

USGS 28-Day Average Streamflow: Percent Below Normal

Updates Weekly (Thursdays)

Last Update

02/06/25

Landing Page

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)

U.S. Geological Survey

ACF Basin Counties with USDA Disaster Designations

Updates Weekly

Last Update

02/06/25

Landing Page

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)

USDA

Precipitation Ranking: Wettest/Driest Month

Updates Weekly

Last Update

02/06/25

Landing Page

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)

NCEI

Precipitation Ranking: Wettest/Driest Calendar Year to Date

Updates Weekly

Last Update

02/06/25

Landing Page

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)

NCEI

All Map Sections for the Dashboard

Current Conditions

View More ACF Current Conditions

Maps

U.S. Drought Monitor

Data Valid

Last Update

02/04/25

Landing Page

GIS Data

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

Source(s)

NDMC, NOAA, USDA

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.

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

Data Valid

Last Update

02/03/25

View on Climate Engine

About GridMET

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)

UC Merced

Update Schedule

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

Lawn and Garden Moisture Index

Data Valid

Last Update

02/06/25

Landing Page

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)

Alabama Office of the State Climatologist

Update Schedule

The Lawn and Garden Moisture Index is updated daily with a latency of 1-2 days.

Stats

Streamflow and Reservoir Conditions

More Reservoir + Streamflow Maps

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

ACF River Basin Lake Levels + Forecasts

Data Valid

Last Update

02/06/25

Current Lake Levels

Forecasted Lake Levels

ACF Composite Conservation + Flood Storage

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)

U.S. Army Corps of Engineers

Update Schedule

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

USGS Streamflow Conditions

Data Valid

Last Update

02/06/25

USGS WaterWatch

GIS Data

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)

U.S. Geological Survey, U.S. Drought Monitor

Update Schedule

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

USGS Streamflow Conditions: 28-Day Average

Data Valid

Last Update

02/06/25

USGS WaterWatch

GIS Data

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

Source(s)

U.S. Geological Survey

Update Schedule

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

ACF River Basin Composite Conservation + Flood Storage

Data Valid

Last Update

02/04/25

More ACF Reservoir Data

Composite Conservation Graph

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)

U.S. Army Corps of Engineers

Update Schedule

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

Future Conditions

More Outlooks + Forecasts

Map Cards

CPC U.S. Monthly Drought Outlook

Last Update

01/31/25

Landing Page

GIS Data

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)

Climate Prediction Center

Update Schedule

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

CPC U.S. Seasonal Drought Outlook

Last Update

01/31/25

Landing Page

GIS Data

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)

Climate Prediction Center

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.

Quantitative Precipitation Forecast: Day 1

Last Update

02/06/25

Landing Page

GIS Data

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)

National Weather Service Weather Prediction Center

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.

Quantitative Precipitation Forecast: Day 1–7

Last Update

02/06/25

Landing Page

GIS Data

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.

Source(s)

National Weather Service Weather Prediction Center

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.