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.