Brent T. Aulenbach Joshua C. Henley Kristina G. Hopkins 20230404 vector digital data Reston, VA U.S. Geological Survey https://doi.org/10.5066/P9G8HZTY Brent T. Aulenbach Joshua C. Henley Kristina G. Hopkins 2023 publication USGS Scientific Investigations Report 2023-5035 Reston, Virginia U.S. Geological Survey This Geographic Information System dataset contains a shapefile of the stormwater drainage area boundaries for the 15 study watersheds in Gwinnett County, Georgia. Stormwater drainage areas were delineated using a high-resolution digital elevation model (DEM) and the stormwater pipe network within Gwinnett County as of August 2021. The purpose of this dataset is to provide the stormwater drainage areas Geographic Information System shapefile used in the study of 15 Gwinnett County watersheds. The stormwater drainage area boundaries were used to determine the impacts of stormwater infrastructure on drainage patterns in the U.S. Geological Survey (USGS) Scientific Investigations Report "Hydrology, water-quality, and watershed characteristics in 15 watersheds in Gwinnett County, Georgia, 2002-20". This study is part of a long-term program to monitor and analyze the hydrologic and water-quality conditions of 15 watersheds in Gwinnett County, Georgia by the USGS in cooperation with Gwinnett County Department of Water Resources. 202108 publication date Complete None planned -84.2721 -83.8468 34.1514 33.7676 ISO 19115 Topic Category inlandWaters Alexandria Digital Library Feature Type Thesaurus drainage basins USGS Thesaurus runoff stream-gage measurement Marine Realms Information Bank (MRIB) keywords watershed USGS Metadata Identifier USGS:63503917d34e47431c15c58c Geographic Names Information System Gwinnett County State of Georgia None None Brent T Aulenbach U.S. Geological Survey, Southeast Region Research Hydrologist mailing address

1770 Corporate Drive Suite 500

Norcross GA 30093 US 678-924-6626 678-924-6710 btaulenb@usgs.gov Funded through a cooperative agreement between Gwinnett County Department of Water Resources and the U.S. Geological Survey Windows version 6.2 (Build 9200); Esri ArcGIS 10.7.1.11595; 02_GwinnettCoGa_Stormwatersheds.zip 1.2 MB There was uncertainty in the determination of the stormwater drainage areas due to uncertainties in the exact locations of the stormwater network pipes and the assumption that the intakes and outlets of pipes are at the same elevations as its data pixel determined from the DEM. Some of this uncertainty was reduced by using a high-resolution digital elevation model (DEM; 5-foot grid resolution) but small discrepancies can sometimes result in a substantial change in basin drainage. No formal logical accuracy tests were conducted. Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. 5-foot grid resolution. Accuracy unknown Unknown Gwinnett County, Georgia 2015 raster digital data Digital and/or Hardcopy 2015 publication date Digital elevation model Provides land surface elevations for defining surface-water flows, drainage area boundaries, and stormwater pipe network inflows and outflows. Gwinnett County Department of Water Resources 202108 vector digital data Digital and/or Hardcopy 202108 publication date Stormwater pipe network Provides stormwater pipe network to determine diversions of stormflow from land surface. Stormwater drainage areas, which account for water diverted through the stormwater network, were delineated for each watershed from a high-resolution digital elevation model (DEM) and the stormwater pipe network. The DEM was derived from lidar data provided from Gwinnett County for 2015 and had a 5-foot grid resolution (Digital elevation model). The stormwater pipe network within Gwinnett County was provided by the Gwinnett County Department of Water Resources and represented the network as of August 2021 (Stormwater pipe network). Stormwater pipes outside of Gwinnett County were not included in the analysis. The Whitebox Tools (v1.4.0) FillBurn tool was used to burn the stormwater pipe network into the original DEM and the breach depressions least cost path tool (distance = 10 and fill = True) was used breach obstructions and to fill any remaining unbreached depressions. An eight direction (d8) flow pointer and accumulation raster were used to delineate the stormwater drainage area for each site. The stormwater drainage area incorporates areas where stormwater pipes could divert water across drainage divides. Digital elevation model Stormwater pipe network 202203 Vector G-polygon 15 NAD 1983 StatePlane Georgia West FIPS 1002 Feet 0.9999 -84.16666666666667 30.0 2296583.333333333 0.0 coordinate pair 0.000000007285694270109391 0.000000007285694270109391 meters D North American 1983 GRS 1980 6378137.0 298.257222101 02_GwinnettCoGa_Stormwatersheds.shp A shapefile of the stormwater drainage area boundaries for the 15 watersheds which were used in the study in Gwinnett County, Georgia U.S. Geological Survey FID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features Watershed Watershed names used in the associated U.S. Geological Survey Scientific Investigations Report. Stormwater drainage area defined by site specified in value definition shown in parentheses U.S. Geological Survey Wildcat Creek Wildcat Creek near Lawrenceville, Ga. (USGS site number 02205000) U.S. Geological Survey Sweetwater Creek Sweetwater Creek at Club Drive near Lilburn, Ga. (USGS site number 02205865) U.S. Geological Survey Yellow River near Snellville Yellow River near Snellville, Ga. (USGS site number 02206500) U.S. Geological Survey Yellow River near Lithonia Yellow River at Ga 124, near Lithonia, Ga. (USGS site number 02207120) U.S. Geological Survey No Business Creek No Business Creek at Lee Road, below Snellville, Ga. (USGS site number 02207185) U.S. Geological Survey Big Haynes Creek Big Haynes Creek at Lenora Road, near Snellville, Ga. (USGS site number 02207385) U.S. Geological Survey Brushy Fork Creek Brushy Fork Creek at Beaver Road, nr Loganville, Ga. (USGS site number 02207400) U.S. Geological Survey Alcovy River Alcovy River at New Hope Road, near Grayson, Ga. (USGS site number 02208150) U.S. Geological Survey Wheeler Creek Wheeler Creek at Bill Cheek Road, near Auburn, Ga. (USGS site number 02217274) U.S. Geological Survey Apalachee River Apalachee River at Fence Road, near Dacula, Ga. (USGS site number 02218565) U.S. Geological Survey Richland Creek Richland Creek at Suwanee Dam Road, near Buford, Ga. (USGS site number 02334480) U.S. Geological Survey Level Creek Level Creek at Suwanee Dam Road, near Suwanee, Ga. (USGS site number 02334578) U.S. Geological Survey Suwanee Creek Suwanee Creek at Suwanee, Ga. (USGS site number 02334885) U.S. Geological Survey Crooked Creek Crooked Creek near Norcross, Ga. (USGS site number 02335350) U.S. Geological Survey North Fork Peachtree Creek North Fork Peachtree Creek at Graves Rd, near Doraville, Ga. (USGS site number 02336030) U.S. Geological Survey This Geographic Information System dataset contains the stormwater drainage area boundary shapefiles for the 15 study watersheds in Gwinnett County, Georgia. Stormwater drainage areas were delineated for each watershed from a high-resolution digital elevation model (DEM) and the stormwater pipe network. The stormwater drainage areas were compared to the watershed drainage areas to assess the impacts of stormwater infrastructure in the report Aulenbach and others (2023). Aulenbach, B.T., Henley, J.C., and Hopkins, K.G., 2023, Hydrology, water-quality, and watershed characteristics in 15 watersheds in Gwinnett County, Georgia, water years 2002-20: U.S. Geological Survey Scientific Investigations Report 2023-5035. U.S. Geological Survey GS ScienceBase mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P9G8HZTY None 20230404 Brent T Aulenbach U.S. Geological Survey, Southeast Region Research Hydrologist mailing address

1770 Corporate Drive Suite 500

Norcross GA 30093 US 678-924-6626 678-924-6710 btaulenb@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time