onemap_prod.SDEADMIN.swi

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Frequently-anticipated questions:

What does this data set describe?

Title: onemap_prod.SDEADMIN.swi
Abstract:
The North Carolina Department of Environment, Health, and Natural Resources, Division of Water Quality, in cooperation with the NC Center for Geographic Information and Analysis, developed the GIS data set, Surface Water Intakes to enhance planning, siting and impact analysis in areas directly affecting water supply intakes in North Carolina. The file enables users to identify point locations where communities draw raw water from a lake, river, or stream; treat it; and distribute treated water to residences and businesses in North Carolina. The original locations were developed by the DEHNR-Div of Environmental Health, Public Water Supply Branch in April of 1990. Locations have been altered, added and deleted by the Division of Water Quality who updates this file in accordance with the Water Supply Watersheds file. This file is updated as changes occur.
Supplemental_Information: 
system filename: swi     file size = 0.27 mb

Revisions and updates to this layer include:
13.) filename: swi804  The August 6, 2004 update consisted of:
a.) The addition of an intake located within the Neuse River (Wake
Forest) watershed.  This affects the Wake Forest 24k quad.

12.) filename: swi103  The January 31, 2003 update consisted of:
a.) The addition of an intake located within the Killets Creek
watershed.  This affects the Carthage 24k quad.

11.) filename: swi802  The August 2, 2002 update consisted of:
a.) The addition of a new intake located within the Hiwassee
River (Murphy) watershed.  This affects the Peachtree 24k quad.

10.) filename: swi601  The June 27, 2001 update consisted of:
a.) The repositioning of SWI coded '01-20-010' located within the
Hiwassee River (Murphy) watershed.  This affects the Peachtree 24k quad.

9.) filename: swi1000  The October 24, 2000 update consisted of:
a.) The repositioning of SWI coded '02-17-010' located within the
Country Line Creek watershed.  This affects the Yanceyville 24k quad.

8.) filename: swi800  The August 7, 2000 update consisted of:
a.) The repositioning of SWI coded PWSB-ID = '02-79-025' located within
the Mayo River watershed.  This affects the Mayodan 24k quad.

7.) filename: swi399  The March 26, 1999 update consisted of:
a.) The addition of numerous PWSB-ID #'s from Public Water Supply
database information (ID #'s were missing previously).
b.) The removal of the SWI coded PWSB-ID = 03-63-025 on Killets Creek.
It's corresponding watershed has been removed.  This affects the Carthage
24k quad.
c.) The removal of two outdated intakes within the Yadkin River
(Salisbury w.s.i.) watershed.  This affects the Salisbury 24k quad.
d.) The removal of the SWI coded PWSB-ID = 01-50-010 within the
Fisher Creek watershed.  The correct intake for this watershed is
further downstream.  This affects the Sylva North 24k quad.
e.) The addition of missing SWI within the Neuse River (Johnston County)
watershed.  This affects the Selma 24k quad.
f.) The removal of the SWI coded PWSB-ID = 02-76-020 within the
Sandy Creek watershed.  The correct intake for this watershed is
further downstream.  This affects the Ramseur 24k quad.
g.) The repositioning of SWI coded PWSB-ID = '02-34-011' located within
the Yadkin River (Winston-Salem) Upper watershed.  This affects the
Vienna 24k quad.
h.) The addition of the SWI coded PWSB-ID = '' located within the
newly adopted Lookout Shoals Lake watershed.  This affects the
Stoney Point 24k quad.
i.) The addition of the SWI coded PWSB-ID = '' located within the
newly adopted Deep River (Randleman) watershed.  This affects the
Randleman 24k quad.
j.) The removal of the SWI coded PWSB-ID = '01-56-101' located within
the Armstrong Creek watershed (removed per request by the Division of
Water Quality).  This affects the Little Switzerland 24k quad.

6.) filename: swi1298  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.

5.) filename: swi896   The August 23, 1996 updates consisted of
incorporations of July, May and January 1996 updates which were not
completed for release until August 1996.
a.) The removal of the SWI coded PWSB-ID = '' on Austin Creek located
in the Rolesville 24k quad.  It's corresponding watershed has been
removed.
b.) The addition of the SWI coded PWSB-ID = '' located within the
Rattlesnake Branch watershed.  This affects the Highlands 24k quad.
c.) The addition of the SWI coded PWSB-ID = '' located within the North
Toe River-Spruce Pine watershed.  This affects the Spruce Pine 24k
quad.
d.) The addition of the SWI coded PWSB-ID = '' located within the Mills
River (Asheville) watershed.  This affects the Skyland 24k quad.
e.) The addition of the SWI coded PWSB-ID = '' located within the French
Broad River (Asheville) watershed.  This affects the Skyland 24k quad.
f.) The removal of the SWI coded PWSB-ID = '' on the French Broad River
located within the Asheville 24k quad.  It did not belong to a
watershed.
g.) The removal of the SWI coded PWSB-ID = '' on the North Toe River
located within the Spruce Pine 24k quad.  It did not belong to a
watershed.
h.) The removal of the SWI coded PWSB-ID = 01-11-020 located within the
Dunsmore Cove Branch watershed.  (Watershed removed as requested by
DWQ.)  This affects the Black Mountain 24k quad.
i.) The removal of the SWI coded PWSB-ID = 03-83-429 located within the
Lumber River (Robeson Co.) protected WSW which borders Scotland, Hoke,
and Robeson Counties.  This affects the Wakulla 24k quad.
j.) The removal of the SWI coded PWSB-ID = "blank" located within the
Spruce Pine 24k quad.  It did not belong to a watershed.
k.) The removal of the SWI coded PWSB-ID = "blank" located within the
Pisgah Forest 24k quad.  It did not belong to a watershed.
l.) The removal of the SWI coded PWSB-ID = 01-18-015 located within the
Hickory 24k quad.  It did not belong to a watershed.
m.) The removal of the SWI coded PWSB-ID = 01-90-015 located within the
Marshville 24k quad.  It did not belong to a watershed.
n.) The removal of the SWI coded PWSB-ID = 02-30-010 located within the
Cool Springs 24k quad.  It was not removed when the watershed boundary
was modified.
o.) The addition of the SWI coded PWSB-ID = "" located within the North
Toe River - Spruce Pine watershed.  This affects the Spruce Pine 24k
quad.
p.) The addition of the SWI coded PWSB-ID = "" located within the Deep
River - Lee Co. watershed.  This affects the Colon 24k quad.
q.) The addition of the SWI coded PWSB-ID = "" located within the Deep
Creek watershed.  This affects the Bryson City 24k quad.
r.) The addition of the SWI coded PWSB-ID = "" located within the Second
Broad River - Forest City watershed.  This affects the Sunshine 24k
quad.
s.) The addition of the SWI coded PWSB-ID = "" located within the Mingus
Creek watershed.  This affects the Smokemont 24k quad.
t.) The addition of the SWI coded PWSB-ID = "" located within the Yadkin
River - King watershed.  This affects the Vienna 24k quad.
u.) The addition of the SWI coded PWSB-ID = "" located within the Yadkin
River - Davie Co. watershed.  This affects the Clemmons 24k quad.
v.) The removal of the SWI coded PWSB-ID = 01-38-010 located within the
Rock Creek (Little Tennessee) watershed.  This affects the
Robbinsville 24k quad.

4.) filename: swi695  (previously called nc.swi695)
The June 30, 1995 update consisted of the removal
of the SWI coded PWSS-ID = 01-20-010, located in Cherokee County.
This affects the Murphy 24k quad.

3.) filename: swi495  (previously called nc.swi595)
The April 12, 1995 update consisted of:
a.) A missing intake point was added for a critical area in Davie County.
b.) Two sites in Davie County had their PWSS-ID numbers changed from
02-030-010 to 02-030-015.

2.) filename: swi1192 (previously called nc.swi1192)
The November 17, 1992 update consisted of:
This file was updated to reflect the same intake
data shown on the August 3, 1992 State-approved Water Supply
Watersheds data layer.
a.) Corrected location of Reddies River intake for the Yadkin River
Basin, Wilkesboro 24k, Boone 100k quads.
b.) Corrected location of intake for the South Fork New River, New River
Basin, Jefferson 24k, West Jefferson 24k, Boone 100k quads.

1.) filename: swi490 (previously name nc.intakes)
The April of 1990 file was the original file supplied by
NCDEHNR, DPH, PWSS.
  1. How should this data set be cited?

    NCDEHNR-Div of Water Quality, Planning Branch, 20040806, onemap_prod.SDEADMIN.swi: NCDEHNR-Div of Water Quality, Planning Branch, Raleigh, North Carolina.

    Online Links:

    Other_Citation_Details: NCCGIA distributes this dataset

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -84.106262
    East_Bounding_Coordinate: -75.633976
    North_Bounding_Coordinate: 36.535900
    South_Bounding_Coordinate: 34.163421

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.
    Currentness_Reference: Data creation and revision dates

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference: _Method: None
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Entity point (247)

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: State Plane Coordinate System 1983
      State_Plane_Coordinate_System:
      SPCS_Zone_Identifier: 3200
      Lambert_Conformal_Conic:
      Standard_Parallel: 34.333333
      Standard_Parallel: 36.166667
      Longitude_of_Central_Meridian: -79.000000
      Latitude_of_Projection_Origin: 33.750000
      False_Easting: 609601.220000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.002048
      Ordinates (y-coordinates) are specified to the nearest 0.002048
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Resolution: 1.000000
      Altitude_Encoding_Method:
      Explicit elevation coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

    onemap_prod.SDEADMIN.swi
    Point locations where communities draw raw water from a lake, river, or stream; treat it; and distribute treated water to residences and businesses. (Source: NC DEHNR-Div of Water Quality, Water Quality Section)

    SHAPE
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    PERIMETER
    Total perimeter in coverage units (Source: Software computed)

    Frequency of measurement: None planned

    Range of values
    Minimum:0.000
    Maximum:0.000
    Units:meters
    Resolution:0.001

    OBJECTID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    SWI_

    SWI_ID

    PWSB_ID

    POLYGONID

    SCALE

    ANGLE

    onemap_prod.SDEADMIN.swi.AREA

    Entity_and_Attribute_Overview:
    A point coverage identifying locations where communities draw raw water from a lake, river, or stream, treat it, and distribute it to residences and businesses, as determined by the Division of Water Quality. The point attribute table (PAT) has attribute data including total area in coverage units, total perimeter, two point internal identification numbers and a PWSB identification number. 
    SWI.PAT  Point Attribute Table
COL  ITEM NAME   WIDTH OUTPUT TYPE  DEC  DESCRIPTION
1    AREA          4     12    F     3   Total area in meters
5    PERIMETER     4     12    F     3   Total perimeter in meters
9    SWI#          4      5    B     -   Internal id number
13   SWI-ID        4      5    B     -   Internal id number
17   PWSB-ID      10     10    C     -   Public Water id number
    Entity_and_Attribute_Detail_Citation: None

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Division of Water Quality, Planning Section
Planning Section Staff, Steve Zoufaly
512 N. Salisbury Street

Raleigh, North Carolina 27604-1148
Division of Environmental Health Director, Richard K. Rowe
Public Water  Chief, Wallace Venrick
Public Water  Staff, J.D. Monroe
NC Dept. of Environment, Health, and Natural Resources
1330 St. Mary's Street
Raleigh, NC 27605-3248

NC-CGIA Director, Karen Siderelis
Data Distribution, Ken Shaffer
Data Management, Zsolt Nagy
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

  3. To whom should users address questions about the data?

    Steve Zoufaly
    NC DEHNR Div. Environmental Management
    512 N. Salisbury Street
    Raleigh, North Carolina 27604-1148
    U.S.A.

    (919) 733-5083 ext. 566 (voice)
    (919) 715-5637 (FAX)
    stephen@dem.ehnr.state.nc.us

    Hours_of_Service: 8am to 5pm
    Contact_Instructions: Preferred contact is by mail or telephone.

Why was the data set created?

This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).

How was the data set created?

  1. From what previous works were the data drawn?

    None (source 1 of 4)
    NC DEHNR - Div. of Environmenta, Public Water Supply Branc, 199004, Surface Water Intakes: NC DEHNR - Div. of Environmental Health, Public Water Supply Branch, Raleigh, North Carolina.

    Other_Citation_Details: Data is now updated by DEHNR,DWQ,WQS
    Type_of_Source_Media: Paper
    Source_Scale_Denominator: 100000
    Source_Contribution: Original locations of surface water intakes

    None (source 2 of 4)
    Originator: US Geological Survey, 1984-1986, USGS 30 x 60 Minute series quadrangles: US Geological Survey, Reston, Virginia.

    Other_Citation_Details: Published map series
    Type_of_Source_Media: Paper
    Source_Scale_Denominator: 100000
    Source_Contribution:
    Paper maps used to delineate the surface water intakes

    None (source 3 of 4)
    NC DEHNR - Division of Water Qu, Water Quality Section, 19960823, Surface Water Intakes: NCDEHNR-DWQ,WQS, Raleigh, North Carolina.

    Other_Citation_Details: Data is updated as needed
    Type_of_Source_Media: Paper
    Source_Scale_Denominator: 24000
    Source_Contribution: Ongoing updates of surface water intakes

    None (source 4 of 4)
    Survey, US Geological , 1990, USGS 7.5 Minute series quadrangles: US Geological Survey, Reston, Virginia.

    Other_Citation_Details: Published map series
    Type_of_Source_Media: Paper
    Source_Scale_Denominator: 24000
    Source_Contribution:
    Paper maps used to delineate updates to the surface water intakes

  2. How were the data generated, processed, and modified?

    Date: Apr-1990 (process 1 of 6)
    The DEHNR,DPH, Public Water Supply Branch compiled latitude/longitude Surface Water Intake coordinates from plotted locations on 1:100,000-scale format base maps. This file was supplied to CGIA of digital conversion.

    Person who carried out this activity:

    J.D. Monroe
    NC DEHNR - Div. of Environmental Health, Public Water Supply Branch
    1330 St. Mary's Street
    Raleigh, North Carolina 27605-3248
    U.S.A.

    (910) 486-1191 (voice)
    (910) 486-1858 (FAX)

    Hours_of_Service: 8:00am to 5:00pm
    Contact_Instructions: Preferred contact is by mail or phone.
    Date: Apr-1990 (process 2 of 6)
    Public Water Supply Branch lat/long coordinates for Surface Water Intake locations were supplied to CGIA, were generated as a statewide points coverage, and were plotted onto individual 1:100,000-scale USGS base maps with 1:100,000-scale hydrography to verify data accuracy. Upon review of maps, intakes were edited on screen as necessary.

    Person who carried out this activity:

    Cheryl Pearce
    NC CGIA
    GIS Analyst
    301 North Wilmington Street, Suite 700
    Raleigh, North Carolina 27601-2825
    U.S.A.

    (919) 733-2090 (voice)
    (919)715-0725 (FAX)
    dataq@ncmail.net

    Hours_of_Service: 8:30AM - 5:30PM
    Contact_Instructions: Phone and electronic mail preferred
    Date: 10-Jul-1996 (process 3 of 6)
    New Surface Water Intakes transferred onto USGS 1:24,000-scale topographic maps by DWQ staff from maps of varying scales supplied by area municipalities. Points were digitized by NCCGIA using ESRI's ARC/INFO version 5.0 GIS using a Calcomp digitizer and ARCEDIT.

    Person who carried out this activity:

    Steve Zoufaly
    NC DEHNR - Division of Water Quality, Water Quality Section
    Environmental Supervisor
    512 N. Salisbury Street
    Raleigh, North Carolina 27604-1148
    U.S.A.

    (919) 733-5083 ext.566 (voice)
    (919)715-5637 (FAX)

    Hours_of_Service: 7:30AM - 4:30PM
    Contact_Instructions: Phone and mail preferred
    Date: 10-Jul-1996 (process 4 of 6)
    New Surface Water Intakes digitized by NCCGIA from USGS 1:24,000-scale topographic maps supplied by DWQ. Updates of digital files occur as needed.

    Person who carried out this activity:

    Cheryl Pearce
    NC CGIA
    GIS Analyst
    301 North Wilmington Street, Suite 700
    Raleigh, North Carolina 27601-2825
    U.S.A.

    (919) 733-2090 (voice)
    (919)715-0725 (FAX)
    dataq@ncmail.net

    Hours_of_Service: 8:30AM - 5:30PM
    Contact_Instructions: Phone and electronic mail preferred
    (process 5 of 6)
    Metadata imported.

    Data sources used in this process:

    • C:\DOCUME~1\david\LOCALS~1\Temp\xml10.tmp

    (process 6 of 6)
    Dataset copied.

    Data sources used in this process:

    • Server=cgiatdb; Service=5151; Database=onemap_test; User=sdeadmin; Version=sde.DEFAULT

  3. What similar or related data should the user be aware of?

    Div. of Water Quality, Water Quality Section, 20040806, Water Supply Watersheds: Div. of Water Quality, Water Quality Section, Raleigh, North Carolina.

    Online Links:

    Other_Citation_Details: Digitized by NC CGIA

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Public Water Supply lat/long coordinates were obtained by NC CGIA and plotted onto 1:100,000-scale format base maps with 1:100,000-scale hydrography to verify accuracy. They were attributed with a PWSB identification numbers supplied by the source agency. Intakes were edited on the screen, if necessary. Intake points have been repositioned by DEHNR,DWQ,WQS as they are updated. The IDs are checked for consistency. This digital file is currently updated as changes occur.

  2. How accurate are the geographic locations?

    Surface water intakes were marked on USGS 30 x 60 Minute series topographic base maps, which meet National Map Accuracy Standards, using a best estimate with reference to surrounding features.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    These data represent the locations where communities draw raw water from a lake, river, or stream, treat it, and distribute treated water to residences and businesses, as deter- mined by the Water Quality Section of the Div of Water Quality.

  5. How consistent are the relationships among the observations, including topology?

    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.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
Acknowledgement of products derived from this data set should cite the following: The source of the Surface Water Intakes 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.

  1. Who distributes the data set? (Distributor 1 of 1)

    NC Center for Geographic Information and Analysis
    Production Services
    301 North Wilmington Street, Suite 700
    Raleigh, North Carolina 27601-2825
    USA

    (919) 733-2090 (voice)
    (919) 715-0725 (FAX)
    dataq@ncmail.net

    Hours_of_Service: 8:30AM - 5:30PM
    Contact_Instructions:
    Phone and electronic mail preferred For current price information use a web browser: COST INFORMATION - <http://www.cgia.state.nc.us/cost.html>
  2. What's the catalog number I need to order this data set?

    Surface Water Intakes

  3. What legal disclaimers am I supposed to read?

    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.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    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.

  6. What hardware or software do I need in order to use the data set?

    All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For more information on formats and media, use a web browser: FORMAT/MEDIA INFORMATION - <http://www.cgia.state.nc.us/cost.html>

Who wrote the metadata?

Dates:
Last modified: 02-Oct-2006
Metadata author:
North Carolina Center for Geographic Information and Analysis
c/o REQUIRED: The person responsible for the metadata information.
Database Management
301 North Wilmington Street, Suite 700
Raleigh, North Carolina 27601-2825
USA

(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@ncmail.net

Hours_of_Service: 8:30AM - 5:30PM
Contact_Instructions: Phone and electronic mail preferred
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.5 on Wed Aug 27 10:32:01 2008