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Brian McCallum

Brian McCallum is the National Streamgage Networks Coordinator for the USGS Water Resources Mission Area.

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USGS science for a changing world

Louisiana Public Awareness, Hydrologic Studies, and Hydrologic Data

Louisiana Public Awareness, Hydrologic Studies, and Hydrologic Data
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Water Resources, Lower Mississippi-Gulf Water Science Center
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Louisiana Public Awareness, Hydrologic Studies, and Hydrologic Data

Louisiana Public Awareness, Hydrologic Studies, and Hydrologic Data
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Brazil_USGS

Brazilian Agencies Partner With USGS On Water Programs

The USGS International Programs Office has intermittently collaborated with Brazil's Geological Survey (CPRM) since the early 1970's. With the creation of the Brazilian National Water Agency (ANA), Brazil's hydrologic monitoring network has taken on a higher socioeconomic importance. The collaboration agreements between USGS and ANA/CPRM have strengthened the Brazilian streamgaging network as well...
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South Atlantic Water Science Center (SAWSC), International Programs
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Brazilian Agencies Partner With USGS On Water Programs

The USGS International Programs Office has intermittently collaborated with Brazil's Geological Survey (CPRM) since the early 1970's. With the creation of the Brazilian National Water Agency (ANA), Brazil's hydrologic monitoring network has taken on a higher socioeconomic importance. The collaboration agreements between USGS and ANA/CPRM have strengthened the Brazilian streamgaging network as well...
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Photo showing a variety of USGS publications

Georgia Geologic Survey - Joint USGS and GGS Publications

The South Atlantic Water Science Center - Georgia Office cooperates with the Georgia Geologic Survey (GGS) in many hydrologic projects. A number of joint publications have been published over the years.
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South Atlantic Water Science Center (SAWSC)
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Georgia Geologic Survey - Joint USGS and GGS Publications

The South Atlantic Water Science Center - Georgia Office cooperates with the Georgia Geologic Survey (GGS) in many hydrologic projects. A number of joint publications have been published over the years.
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Hurricane Irene, satellite view, NASA

Hurricane Monitoring Information for Georgia, North Carolina, and South Carolina

Hurricane Information for Georgia, North Carolina, and South Carolina.
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South Atlantic Water Science Center (SAWSC)
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Hurricane Monitoring Information for Georgia, North Carolina, and South Carolina

Hurricane Information for Georgia, North Carolina, and South Carolina.
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USGS scientists working during the epic September 2009 flood in Georgia. Power Springs Creek (02336870)

USGS Long-Term Water Monitoring Networks

“USGS long-term streamgages and groundwater wells are like a fine wine…they get better with age!” The accurate, long-term monitoring networks of SAWSC provide valuable data in real-time and historical perspective to compare that data to. The longer a monitoring location is in operation, the more valuable it becomes, since more statistical comparisons can be performed. Our field technicians...
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South Atlantic Water Science Center (SAWSC)
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USGS Long-Term Water Monitoring Networks

“USGS long-term streamgages and groundwater wells are like a fine wine…they get better with age!” The accurate, long-term monitoring networks of SAWSC provide valuable data in real-time and historical perspective to compare that data to. The longer a monitoring location is in operation, the more valuable it becomes, since more statistical comparisons can be performed. Our field technicians...
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September 2009 Flooding. Chattahoochee River near Whitesburg (02338000)

Epic September 2009 Flooding - Georgia

Many days of continuous heavy rain in mid-September 2009 resulted in flooding in many parts of Georgia, especially in north Georgia and the Atlanta region. The rains produced streamflows of record proportions. rivers and streams had magnitudes so great that the odds of it happening were less than 0.2 percent in any given year. In other words, there was less than a 1 in 500 chance that parts of...
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South Atlantic Water Science Center (SAWSC)
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Epic September 2009 Flooding - Georgia

Many days of continuous heavy rain in mid-September 2009 resulted in flooding in many parts of Georgia, especially in north Georgia and the Atlanta region. The rains produced streamflows of record proportions. rivers and streams had magnitudes so great that the odds of it happening were less than 0.2 percent in any given year. In other words, there was less than a 1 in 500 chance that parts of...
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New Interactive Flood Warning Tool Developed for Big Creek

A new interactive Flood Inundation Map to improve flood warnings and assist with emergency management along Big Creek in Alpharetta and Roswell...
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Media Advisory: USGS Crews out Measuring Record Breaking Inland Flooding

Heavy rains and hazardous weather conditions are occurring in western South Carolina, with record flooding occurring and more expected over parts of...
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Media Advisory: USGS Deploys Crews in Advance of Storm and Inland Flooding

Currently, heavy rains and hazardous weather conditions are predicted for western North Carolina and most of South Carolina by the National Weather...
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Flood Chart Aids in Evacuation Decisions

Emergency managers and residents along the Withlacoochee and Little River Basins have a new educational resource to help them better understand floods...
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Visit the U.S. Geological Survey's National Water Dashboard

The U.S. Geological Survey National Water Dashboard supplies critical information to decision makers, emergency managers, and the public during extreme hydrologic events (such as droughts and floods) and during normal hydrologic conditions. It informs decision making that can help protect lives and property before and during extreme hydrologic events. The National Water Dashboard draws upon the ex
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Water Resources, Oklahoma-Texas Water Science Center, South Atlantic Water Science Center (SAWSC)

Water priorities for the Nation—The USGS National Water Dashboard

The U.S. Geological Survey National Water Dashboard supplies critical information to decision makers, emergency managers, and the public during extreme hydrologic events (such as droughts and floods) and during normal hydrologic conditions. It informs decision making that can help protect lives and property before and during extreme hydrologic events. The National Water Dashboard draws upon the ex
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Water Resources, Oklahoma-Texas Water Science Center, South Atlantic Water Science Center (SAWSC)

U.S. Geological Survey core science systems strategy: characterizing, synthesizing, and understanding the critical zone through a modular science framework

Executive SummaryCore Science Systems is a new mission of the U.S. Geological Survey (USGS) that resulted from the 2007 Science Strategy, “Facing Tomorrow’s Challenges: U.S. Geological Survey Science in the Decade 2007–2017.” This report describes the Core Science Systems vision and outlines a strategy to facilitate integrated characterization and understanding of the complex Earth system. The vis
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Core Science Systems, Earth Resources Observation and Science Center, Science Analytics and Synthesis (SAS), Community for Data Integration (CDI), Earth Resources Observation and Science (EROS) Center , Geosciences and Environmental Change Science Center, Coastal Changes and Impacts

Flood-tracking chart for the Withlacoochee and Little River Basins in south-central Georgia and northern Florida

The U.S. Geological Survey (USGS), in cooperation with other Federal, State, and local agencies, operates a flood-monitoring system in the Withlacoochee and Little River Basins. This system is a network of automated river stage stations (ten are shown on page 2 of this publication) that transmit stage data through satellite telemetry to the USGS in Atlanta, Georgia and the National Weather Service
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Water Resources, South Atlantic Water Science Center (SAWSC)

Monitoring storm tide and flooding from Hurricane Isaac along the Gulf Coast of the United States, August 2012

The U.S. Geological Survey (USGS) deployed a temporary monitoring network of water-level and barometric pressure sensors at 127 locations along the gulf coast from Alabama to Louisiana to record the timing, areal extent, and magnitude of hurricane storm tide and coastal flooding generated by Hurricane Isaac. This deployment was undertaken as part of a coordinated federal emergency response as outl
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Water Resources, South Atlantic Water Science Center (SAWSC)

Monitoring storm tide and flooding from Hurricane Sandy along the Atlantic coast of the United States, October 2012

The U.S. Geological Survey (USGS) deployed a temporary monitoring network of water-level and barometric pressure sensors at 224 locations along the Atlantic coast from Virginia to Maine to continuously record the timing, areal extent, and magnitude of hurricane storm tide and coastal flooding generated by Hurricane Sandy. These records were greatly supplemented by an extensive post-flood high-wate
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Water Resources, South Atlantic Water Science Center (SAWSC)

Science strategy for Core Science Systems in the U.S. Geological Survey, 2013-2023

Core Science Systems is a new mission of the U.S. Geological Survey (USGS) that grew out of the 2007 Science Strategy, “Facing Tomorrow’s Challenges: U.S. Geological Survey Science in the Decade 2007–2017.” This report describes the vision for this USGS mission and outlines a strategy for Core Science Systems to facilitate integrated characterization and understanding of the complex earth system.
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Earth Resources Observation and Science Center, Science Analytics and Synthesis (SAS), Community for Data Integration (CDI), Earth Resources Observation and Science (EROS) Center

Monitoring inland storm tide and flooding from Hurricane Irene along the Atlantic Coast of the United States, August 2011

The U.S. Geological Survey (USGS) deployed a temporary monitoring network of water-level sensors at 212 locations along the Atlantic coast from South Carolina to Maine during August 2011 to record the timing, areal extent, and magnitude of inland hurricane storm tide and coastal flooding generated by Hurricane Irene. Water-level sensor locations were selected to augment existing tide-gage networks
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Water Resources

Epic Flooding in Georgia, 2009

Metropolitan Atlanta-September 2009 Floods The epic floods experienced in the Atlanta area in September 2009 were extremely rare. Eighteen streamgages in the Metropolitan Atlanta area had flood magnitudes much greater than the estimated 0.2-percent (500-year) annual exceedance probability. The Federal Emergency Management Agency (FEMA) reported that 23 counties in Georgia were declared disaster ar
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Water Resources, South Atlantic Water Science Center (SAWSC)

Historic flooding in northern Georgia, September 16-22, 2009

A primary mission of the U.S. Geological Survey (USGS) is the measurement and documentation of the magnitude and extent of hydrologic hazards, such as floods, droughts, and hurricane storm surge. USGS personnel were deployed to document historic, widespread flooding that occurred throughout the Atlanta metropolitan area and northwestern Georgia in the early fall of 2009. The floods were created by
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Water Resources, South Atlantic Water Science Center (SAWSC)

Historic Flooding in South Georgia, March 27-April 3, 2009

A primary mission of the U.S. Geological Survey (USGS) is the measurement and documentation of the magnitude and extent of hydrologic hazards, such as floods, droughts, and hurricane storm surge. USGS personnel were deployed for historic widespread flooding that occurred throughout South Georgia from a storm event beginning in the late evening of March 27 and continuing through April 3, 2009. Data
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Water Resources, South Atlantic Water Science Center (SAWSC)

Flood-tracking chart for the Chattahoochee River Basin in Metropolitan Atlanta, Georgia

The U.S. Geological Survey (USGS)—in cooperation with other Federal, State, and local agencies—operates a flood monitoring system in the Chattahoochee River Basin. This system is a network of 35 automated river stage stations that transmit stage data through satellite telemetry to the USGS Georgia Water Science Center in Atlanta. During floods, the public and emergency response agencies use this i
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Water Resources, South Atlantic Water Science Center (SAWSC)
Screenshot of the USGS Endangered, Discontinued, or Rescued Streamgages Mapper homepage
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Monitoring Suspended Sediment and Flow along the Mississippi River. link

Science and Products