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#           Magnitude and frequency of floods for rural streams in Georgia, South Carolina, and North Carolina, 2017—Summary      

      April 28, 2023    

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Reliable flood-frequency estimates are important for hydraulic structure design and floodplain management in Georgia, South Carolina, and North Carolina. Annual peak streamflows (hereafter, referred to as peak flows) measured at 965 U.S. Geological Survey streamgages were used to compute flood-frequency estimates with annual exceedance probabilities (AEPs) of 50, 20, 10, 4, 2, 1, 0.5, and 0.2 percent. These AEPs correspond to flood-recurrence intervals of 2, 5, 10, 25, 50, 100, 200, and 500 years, respectively. A subset of these streamgages (801) were used to develop equations to predict the AEP flood flows at ungaged stream locations. This study was completed by the USGS in cooperation with the Georgia, South Carolina, and North Carolina Departments of Transportation and the North Carolina Department of Crime Control and Public Safety, and the results are summarized in this fact sheet. The complete results and the supporting data are presented in the companion scientific investigations report and data release.

## Citation Information

## Related Content

                  -              Data           
                  -              Connect           

May 8, 2023

####                 Magnitude and Frequency of Floods for Rural Streams in Georgia, South Carolina, and North Carolina, 2017-Data              

South Atlantic Water Science Center (SAWSC)

May 8, 2023

####                 Model Archive for Magnitude and Frequency of Floods for Rural Streams in Georgia, South Carolina, and North Carolina, 2017              

South Atlantic Water Science Center (SAWSC)

#### Toby D Feaster

##### Hydrologist

South Atlantic Water Science Center (SAWSC)

tfeaster@usgs.gov

803-750-6100

#### Anthony J Gotvald, PE

##### Surface-Water Specialist

South Atlantic Water Science Center (SAWSC)

agotvald@usgs.gov

678-924-6648

#### Jonathan W Musser

##### Hydrologist

South Atlantic Water Science Center (SAWSC)

jwmusser@usgs.gov

#### John  C Weaver

##### Assistant Director for Data - NC

South Atlantic Water Science Center (SAWSC)

jcweaver@usgs.gov

919-571-4043

#### Katharine Kolb

##### Geographer

South Atlantic Water Science Center (SAWSC)

##### Associate National Map Liaison NC & SC

National Geospatial Program

kkolb@usgs.gov

704-790-2612

## Related Content

May 8, 2023

####                 Magnitude and Frequency of Floods for Rural Streams in Georgia, South Carolina, and North Carolina, 2017-Data              

South Atlantic Water Science Center (SAWSC)

May 8, 2023

####                 Model Archive for Magnitude and Frequency of Floods for Rural Streams in Georgia, South Carolina, and North Carolina, 2017              

South Atlantic Water Science Center (SAWSC)

#### Toby D Feaster

##### Hydrologist

South Atlantic Water Science Center (SAWSC)

tfeaster@usgs.gov

803-750-6100

#### Anthony J Gotvald, PE

##### Surface-Water Specialist

South Atlantic Water Science Center (SAWSC)

agotvald@usgs.gov

678-924-6648

#### Jonathan W Musser

##### Hydrologist

South Atlantic Water Science Center (SAWSC)

jwmusser@usgs.gov

#### John  C Weaver

##### Assistant Director for Data - NC

South Atlantic Water Science Center (SAWSC)

jcweaver@usgs.gov

919-571-4043

#### Katharine Kolb

##### Geographer

South Atlantic Water Science Center (SAWSC)

##### Associate National Map Liaison NC & SC

National Geospatial Program

kkolb@usgs.gov

704-790-2612

### Study Area

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####             Water Resources Mission Area - Headquarters        

USGS Headquarters12201 Sunrise Valley DriveReston, VA20192United States

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