Fort Bragg Cantonment Area Cape Fear River Basin LIDAR data have been used to create digital contours and topographic maps. 1.A Digital Elevation Model (DEM) was created from LIDAR (Light Interferometric Distance and Ranging ) data. 2.Locations of storm drains and outfalls were updated based on field reconnaissance 3.Connectivity was established for the storm drain network. 4.The area discharging into the storm drain system and the water quality testing site were digitally delineated using GIS to produce the final drainage basin Geographic Information Systems (GIS): -have the ability to construct maps "on the fly" -integrate data: geographic coordinates (or "where things are") and sets of attributes (or "what things are like"), processed according to rules set by the user Fort Bragg is taking a proactive approach by having the USGS sample stormwater runoff prior to the issuance of their Stormwater Permit Selected outfalls are sampled for the parameters determined by the State Established a database of geographic layers Delineated high-precision watershed hypsography Defined drainage basins for industrial outfalls Produced reliable locater maps of sampling sites Delivers spatial data specific to stormwater management on compact disc Prepared and updates the SWP3 for all NPDES I permit reportable categories Developed 42 base maps of the industrial activities in the cantonment area Provide site specific training to the environmental officers and designated personnel for each active industrial area Update the SWP3 maps to reflect changes Delineation of watersheds with high precision hypsography 15 outfalls and 2 quality assurance sites are sampled to determine whether water quality exceeds EPA criteria. The stormwater contribution from the Bases’ Industrial Areas to watersheds are measured at outfalls Selected sites will be monitored during low flows to assess the pollutant load of Fort Bragg’s surrounding streams during non-storm conditions. These measurements then can be compared to the stormwater sampling information to determine the stormwater impact on the streams. R unoff samples are representative of vehicle maintenance sites, warehouse storage areas, loading areas with a variety of equipment and other potentially polluting materials which are stored outside, and temporary storage of hazardous wastes. U.S. Geological Survey at Fort Bragg: TOPOGRAPHY LAND USE HYDROLOGY IMGEN IMREC TRAIR TRVEH UTSTO BGGEN Outfall 53, Sample Site 2 Stormwater Pollution Management In 1975 the U.S. EPA delegated authority to administer the National Pollutant Discharge Elimination System I Program (NPDES I ) in North Carolina to the State. In 1995, Fort Bragg, working with the USGS fulfilled the application requirements for an NPDES I Individual Permit (IP), allowing Fort Bragg to discharge stormwater from its resident industrial activities. Consequently, according to the provisions of the IP, Fort Bragg is required to develop a Stormwater Pollution Prevention Plan (SWP3). The plan inventories the drainage outfalls discharging stormwater runoff from industrial areas to surface waters, identifies potential pollutant sources, catalogs current practices used by the industrial areas to reduce pollution risk, and provides a plan for compliance with other regulatory requirements. The USGS is partnered with Fort Bragg to meet the water-quality requirements of the upcoming stormwater permit under the Environmental Protection Agency National Pollutant Discharge Elimination System I & II regulations. The USGS has addressed stormwater issues by compiling a comprehensive GIS database. Through GIS, delineated drainage basins and thematic maps have been generated to aid in the characterization of the watershed. Abstract Applications of GIS in Water Quality Assessments for the Stormwater Pollution Permit Process, Fort Bragg, NC Beth M. Wrege and Kirsten M. Cassingham, U.S. Geological Survey, Raleigh, NC Representative sample sites were chosen from the 154 identified industrial outfalls to evaluate the water quality. Analysis of the data will serve as a baseline in Fort Bragg’s efforts to secure stormwater permits from the State. The USGS partnered with the State of North Carolina to determine and design specific sample locations in order to characterize stormwater contributions to watersheds affected by Fort Bragg. The selected samples represent vehicle maintenance sites, warehouse storage, loading areas with a variety of equipment and other potential polluting materials, as well as temporary storage of hazardous wastes. The data collected from the samples will be reviewed and reported in the annual report of the Stormwater Pollution Prevention Program. McPherson Watershed Digitized Storm Drain Network North Carolina Fayetteville