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Metadata: Storm Water Infrastructure Connectivity
storm_STORM_sw_Connectivity

Frequently-anticipated questions:


What does this data set describe?

Title: storm_STORM_sw_Connectivity

Abstract:

Inventory features where there is no defined channel present, assumed surface drainage, or assumed pipe connectivity.

  1. How should this data set be cited?

Charlotte-Mecklenburg Storm Water Services Agency, Charlotte, NC

  1. What geographic area does the data set cover?

West_Bounding_Coordinate: -81.008848

East_Bounding_Coordinate: -80.624664

North_Bounding_Coordinate: 35.375175

South_Bounding_Coordinate: 35.017928

  1. What does it look like?
  2. Does the data set describe conditions during a particular time period?

Calendar_Date: 2004 forward

Currentness_Reference: publication date

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

Geospatial_Data_Presentation_Form: vector digital data

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

This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • String (460)
    1. What coordinate system is used to represent geographic features?

The map projection used is Lambert Conformal Conic.

Projection parameters:

Standard_Parallel: 34.333333

Standard_Parallel: 36.166667

Longitude_of_Central_Meridian: -79.000000

Latitude_of_Projection_Origin: 33.750000

False_Easting: 2000000.002617

False_Northing: 0.000000

Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000000
Ordinates (y-coordinates) are specified to the nearest 0.000000
Planar coordinates are specified in survey feet

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: 0.000122

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

  1. How does the data set describe geographic features?

storm_STORM_sw_Connectivity

NOTES

Notes (Source: City of Charlotte Storm Water)

Notes

INV_DATE

Date inventory was collected (Source: City of Charlotte Storm Water)

Date

US_ID

Up stream ID (Source: WISE)

Auto populated up stream ID

Notes

Notes (Source: City of Charlotte Storm Water)

Notes

INV_BY

Feature geometry. (Source: ESRI)

Coordinates defining the features.

MEDIA_LINK

Internal feature number. (Source: ESRI)

Sequential unique whole numbers that are automatically generated.

storm_STOR

Internal feature number. (Source: ESRI)

Sequential unique whole numbers that are automatically generated.

Shape_Leng

Feature geometry. (Source: ESRI)

Coordinates defining the features.

DS_ID

Down Stream ID (Source: WISE)

Auto populated down stream ID

Shape

Feature geometry. (Source: ESRI)

Coordinates defining the features.

SHAPE

Feature geometry. (Source: ESRI)

Coordinates defining the features.

CON_FEAT

Type of connectivity (Source: City of Charlotte Storm Water)

Value

Definition

Surface Drainage

Assumed path of surface drainage

Pipe Drainage

Assumed path of pipe drainage

Sequential unique whole numbers that are automatically generated.


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • See geographic descriptions and editor list.
  2. Who also contributed to the data set?
    • See geographic descriptions and editor list.
  3. To whom should users address questions about the data?

Catherine Crigler
City of Charlotte
Inventory Coordinator
600 E 4th St
Charlotte, NC 28202
USA

704-336-5735 (voice) or email: ccrigler@charlottenc.gov


Why was the data set created?

To fill in connectivity gaps in the inventory where the presence of features and drainage flow could be assumed.


How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?

(process 1 of 2)

Locate structures with GPS technology and enter structure attributes and linear features using mobile GIS software.

Data sources used in this process:

    • H:\Metadata\sw_Connectivity.xml

(process 2 of 2)

Metadata imported.

Data sources used in this process:

    • H:\Metadata\sw_Connectivity.xml
  1. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?

We try to minimize the room for input error by creating domains and automatically populated fields. However, there is still room for error and we check all field data for missing attributes and logical errors.

  1. How accurate are the geographic locations?

Submeter GPS accuracy for 2004 and beyond

  1. How accurate are the heights or depths?

Based on 2002 DTM (10ft cells)

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

The inventory collection is ongoing with a goal to recapture the pre-2004 data and complete all remaining inventory within the city limits. After initial completion, the inventory effort will continue in order to collect data on new construction, repaired systems, and annexed areas.

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

All data with an Inventory Date of 2004 and beyond has been collected with sub-meter GPS equipment and reviewed for locational accuracy against aerial photography. All data with an Inventory Date before 2004 was located manually and not all of the data has been checked against current aerial photography.


How can someone get a copy of the data set?

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

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

Catherine Crigler
City of Charlotte
Inventory Coordinator

704-336-5735 (voice)

  1. What's the catalog number I need to order this data set?

Downloadable Data

  1. What legal disclaimers am I supposed to read?

In no event shall the City of Charlotte and/or Mecklenburg County Government be liable for any special, indirect, or loss of use, data or profits, whether in an action of contract, negligence or other tortuous action, arising out of or in connection with the use or performance of software, documents, provision of, or failure to provide services or information available from this data.

  1. How can I download or order the data?
    • Availability in digital form: from Charmeck.org/stormwater

Who wrote the metadata?

Dates:

Last modified: 09-Mar-2011

Metadata author:

Samantha Willis, GIS Analyst City of Charlotte, E&PM, Storm Water Services

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

·         <http://www.esri.com/metadata/esriprof80.html>

·         <http://www.esri.com/metadata/esriprof80.html>

·         <http://www.esri.com/metadata/esriprof80.html>


Generated by mp version 2.9.6 on Wed Mar 09 12:21:33 2011