The North Carolina Department of Environment and Natural Resources, Division of Water Quality, Planning Branch in cooperation with the NC Center for Geographic Information and Analysis, developed the GIS data set, National Pollutant Discharge Elimination System Sites(NPDES), to enhance planning, siting, and impact analysis in areas which are directly affected by these sites. The file identifies outfall locations for individual NPDES permitted wastewater discharges to surface waters in North Carolina.
This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
>system filename : npdes file size = 0.56 mb > >Revisions and updates to this layer include: >9.) filename: npdes0306 The March 30, 2006 updates consisted of >obtaining the most current NPDES data from the Division of Water >Quality to replace existing data (WQ data currency - 12/07/2005). >NOTE: Two points fell outside of North Carolina (permit NC0085839 >and NC0007510). These were corrected using archived NPDES data. >8.) filename: npdes1000 The October 11, 2000 updates consisted of >obtaining the most current NPDES data from the Division of Water >Quality to replace existing data. .PAT items incorporated into >the new version that did not exist in the December 1998 version >include: permpipe, status, majorminor, issuedate, expdate, >flow_mgd, dc1, dc2, dc3, dc4, dc5, region, lat, long, and class. >(For further details on the items, see Entity_and_Attribute_Information >section.) .PAT items removed include date (Last time point was >checked by technician for accuracy) and MAP# (DWQ quadrangle map >index number). NOTE: The following permits were removed from the >database: NC0007064, NC0074578, NC0084883, and NC0086304. >(Because of lat/long problems, these points fell outside the state, >and NCDWQ did not have staff available to research and rectify >these errors.) >7.) filename: npdes1298 The December 1998 update to this layer >consisted of projecting the data from NAD27 datum, State Plane >projection, units of measure feet TO: NAD83 DATUM, State Plane >PROJECTION, UNITS OF MEASURE METERS. This was done to comply with >the NC Geographic Information Coordinating Council's "Statement of >Direction for North Carolina Corporate Geographic Database >Horizontal Reference, Datum and Unit of Measure". This reprojecting >was done in various ways depending on the data type and content. >Vector data was projected using the 'project' command in ESRI's Arc >software and topology was cleaned and built based on coverage needs. >Raster data was projected using ESRI's Grid module and various steps >as applicable. >6.) filename: npdes 694 The June 28, 1994 file contains 3,280 points. >5.) filename: npdes1293 (previously named nc.npdes1293) >The December, 10 1993 file contains 3,294 points. >4.) filename: npdes893 (previously named nc.npdes893) >August 1, 1993 >3.) filename: npdes593 (previously named nc.npdes593) >May 1, 1993 >2.) filename: npdes193 (previously named nc.npdes193) >January 26, 1993 >1.) filename: npdes1291 (previously named nc.npdes1291) >December 1991 version.
Data creation and revision dates
Acknowledgement of products derived from this data set should cite the following: The source of the National Pollutant Discharge Elimination System Sites (NPDES) data is the North Carolina Corporate Geographic Database. Earlier versions of this dataset may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers.
512 N. Salisbury Street
Preferred contact is by phone
>Div. of Water Quality >Water Quality Section >NC Dept. of Environment and Natural Resources >512 N. Salisbury Street >Raleigh, NC 27604-1148 > >NCCGIA Director, Karen Siderelis >Database Administration, Zsolt Nagy >Database Management, David Giordano >Project Manager, Cheryl Pearce >North Carolina Center for Geographic Information and Analysis >Governor's Office >Office of State Planning >301 North Wilmington Street, Suite 700 >Raleigh, NC 27601-2825
The NC DENR Water Quality Planning Section presented the NPDES sites to NC CGIA as ASCII files. They were converted to ARC/INFO coverages and were given attributes also supplied by the Water Quality Planning Branch. The digital files were plotted and any necessary label corrections were made.
Using ESRI's ARC/INFO GIS software, the dataset was built for points using the "build" command. Topology has not been edited since the last build or clean.
These data represent the locations and identities of National Pollutant Discharge Elimination System Sites in North Carolina as identified by the Water Quality Planning Section.
The National Pollutant Discharge Elimination System Sites were marked on 7.5 Minute USGS paper topographic maps which meet National Map Accuracy Standards. Sites were located using a best estimate with reference to surrounding features.
Locations of National Pollutants Discharge Elimination System Sites
Paper maps used to delineate the National Pollutants Discharge Elimination System Sites
Latitude and Longitude coordinates of existing points of pollution were derived from USGS 7.5 minute Quadrangles.
512 N. Salisbury Street
Phone or electronic mail
The DWQ ASCII files were converted to ARC/INFO version 5.0. The digital files were attributed and checkplots were created for review by the Water Quality Section. Necessary corrections were made and new plots were run. CGIA updates the digital file as needed.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred
Dataset copied.
Internal feature number.
ESRI
Feature geometry.
ESRI
Feature geometry.
ESRI
Internal feature number.
ESRI
Longitude of outfall in DDMMSS
NC DENR-Div. of Water Quality, Water Quality Section
Total perimeter in coverage units
Software computed
NPDES permit number
NC DENR-Div. of Water Quality, Water Quality Section
Owner of wastewater treatment facility
NC DENR-Div. of Water Quality, Water Quality Section
Name of wastewater treatment facility
NC DENR-Div. of Water Quality, Water Quality Section
County pipe discharges into
NC DENR-Div. of Water Quality, Water Quality Section
DWQ regional office associated with the facility
NC DENR-Div. of Water Quality, Water Quality Section
Asheville Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Fayetteville Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Mooresville Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Raleigh Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Washington Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Wilmington Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Winston-Salem Regional Office
NC DENR-Div. of Water Quality, Water Quality Section
Type of wastewater treatment facility
NC DENR-Div. of Water Quality, Water Quality Section
Code to distinguish if WWTP is considered a major or minor facility (EPA has a specific technical definition)
NC DENR-Div. of Water Quality, Water Quality Section
Major facility
NC DENR-Div. of Water Quality, Water Quality Section
Minor facility
NC DENR-Div. of Water Quality, Water Quality Section
DWQ Subbasin number
NC DENR-Div. of Water Quality, Water Quality Section
Stream receiving discharge
NC DENR-Div. of Water Quality, Water Quality Section
Identifies whether receiving stream is an unnamed trib
NC DENR-Div. of Water Quality, Water Quality Section
Latitude of outfall in DDMMSS
NC DENR-Div. of Water Quality, Water Quality Section
Latitude of outfall in decimal degrees
NC DENR-Div. of Water Quality, Water Quality Section
Longitude of outfall in decimal degrees
NC DENR-Div. of Water Quality, Water Quality Section
A point coverage identifying outfall locations for individual NPDES permitted wastewater dischargers to surface waters in North Carolina. The point attribute table (PAT) has attribute data including total area in coverage units (square meters), total perimeter (linear meters), two point internal identification numbers, and pertinent NPDES information. >ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION >AREA 4 12 F 3 Total area in meters >PERIMETER 4 12 F 3 Total perimeter in meters >NPDES# 4 5 B - Point internal id number >NPDES-ID 4 5 B - Point internal id number >PERMIT 9 9 C - NPDES permit number >OWNER 54 54 C - Facility owner >FACILITY 49 49 C - Facility name >COUNTY 12 12 C - County pipe discharges into >REGION 13 13 C - Area DWQ regional office >TYPE 32 32 C - Type of facility >CLASS 5 5 C - DWQ stream class (major or minor) >SUBBASIN 4 5 B - DWQ Subbasin number >RECEIVING 111 111 C - Stream receiving discharge >UT_ 3 3 C - Identifies if stream is UT >LATITUDE 8 9 F - Latitude (DDMMSS) >LONGITUDE 8 9 F - Longitude (DDMMSS) >DDLAT 8 11 F - Latitude (decimal degrees) >DDLONG 8 11 F - Longitude (decimal degrees)
None
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred For current price information use a web browser: COST INFORMATION - http://www.cgia.state.nc.us/cost.html
NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.
Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.
301 North Wilmington Street, Suite 700
Phone and electronic mail preferred