Digital Data As-Built Requirements

The Town of Firestone utilizes specific Geographic Coordinate System (GCS) to define locations on the earth as seen below. 

Coordinate Systems: NAD_1983_HARN_StatePlane_Colorado_North_FIPS_0501_Feet 

Projection: Lambert_Conformal_Conic 

The Town of Firestone’s Geographic Information System Division uses ESRI’s Local Government Information Model (LGIM) a schema from Esri that provides the architecture and framework to manage city and county data. This model is considered a starting point for users with city and county data, as it can be customized by adding additional fields, feature classes, and relationships The Local Government Information Model (LGIM) is an information model of GIS datasets and web services that integrate processes across government departments in the United States. 

  • The Local Government Information Model (LGIM) information can be found here
  • The Data Dictionary for the LGIM can be found here

The Town of Firestone’s Geographic Information System Division uses ESRI’s Water Geometric Network. Geometric networks offer a way to model common networks and infrastructures found in the real world. Water distribution, electrical lines, gas pipelines, telephone services, and water flow in a stream are all examples of resource flows that can be modeled and analyzed using a geometric network. Attribute domains are rules that describe the available values of a field type. They are used to constrain the values allowed in any particular attribute for a table or feature class. They provide a method for enforcing data integrity by limiting what can be placed on a field to a valid list or range of choices. 

As-Built Requirements

  • Data must be in a compatible version to ArcGIS 10.8.1  
  • All data must be delivered in the GCS 
  • Coordinate Systems: NAD_1983_HARN_StatePlane_Colorado_North_FIPS_0501_Feet  
  • Projection: Lambert_Conformal_Conic 
  • Datum: D_North_American_1983_HARN 
  • All data must be delivered as a shapefile (.shp) or file geodatabase (.gdb) 
  • Firestone does not accept personal geodatabases (.mdb) 
  • Files may be zipped but may not be compressed 
  • Data measurements must be US Survey Feet 

Data Dictionary

The Water and Stormwater data dictionary, describes the contents, format, and structure of a database and the relationship between its elements, used to control access to and manipulation of the database. 

For other features, please visit this website

  1. Jessica Hummel

    GIS Coordinator