Contracting with GIS Consultants

26 June 2004
This guideline provides local communities with guidance in developing a project and project goals, preparing a request for proposals (RFP), and executing a contract for GIS mapping or analytical services. Included are technical and administrative specifications that are important to ensure the creation of a quality community product useful for many years to come.

GIS Data Directories and File Names

26 January 1991
This document is primarily for ARC/Info system managers and technicians. The directory and file naming conventions recommended here are used by VCGI. Communications with VGIS sites and user support will be simplified if these conventions are followed. Also, any applications, software or SMLs/AMLs developed by VCGI will use these conventions. Most importantly, if these conventions are followed, this document can serve as part of your system documentation for future users at your site.

Attribute Definitions and Codes

26 January 1991
GIS attributes contain information associated with geographic features on a map. GIS users, present and future, will most likely need to develop attribute tables for new layers of map information. Existing attribute tables will need to be expanded as well. The Vermont Center for Geographic Information, Inc. (VCGI) encourages Vermont users of geographic information to use the same base attributes and codes so that data can be more easily exchanged and understood by all users.

Vermont Future Land Use GIS Data Standard

12 December 2018
The Vermont Future Land Use GIS Data Standard seeks to: 1. define a data framework for using GIS to map regional future land use plans. 2. Define a data framework that supports easy identification of: a) RPC to which a data set pertains. b) adoption date of plan that the data set models. 3. Provide the data framework as a resource that can be extended to meet local-regional business needs.

Guidelines for the Use of the Vermont Coordinate System

26 November 1992
The objective is to provide a source document for any organization or political body wishing to regulate the use of the Vermont Coordinate System, and as such, the impact of these standards is dependent on the actions of those outside institutions. The reasons for utilizing the Vermont (state plane) Coordinate System are: 1. To describe on a common datum, the position of points on, above, or under the surface of the earth. 2. To perpetuate said positions in a convenient format. 3. To standardize the location of objects, points, and other entities, as recorded in geographic/ land information systems, (G/LIS) and other spatially related databases, for use in analytic and mapping applications. 4. To facilitate future survey retracement of land boundaries.

Vermont GIS Parcel Mapping Guideline

13 April 2017
This guideline will identify aspects of the parcel mapping process, issues to consider, and provide template documents that will assist listers, assessors, and other town officials with their duties as they relate to the development of parcel maps and data. An overview of the process is provided before the template documents. Please refer to the current VT GIS Parcel Data Standard at the VCGI web site ( for technical specifications relevant to the creation or update of the parcel data used to create maps.

VT 3-Phase Geodata Exchange Standard

08 August 2018
This standard provides a common data-schema for exchanging and conflating generalized 3-phase-power GIS data; the intended result of using this standard is production of data sets that are used for cursory analysis and broad-stroke planning (e.g., energy planning). The data schema’s simplicity supports simple data-load processes and efficient exchange/conflation of data amid heterogeneous sources. Ideally, this standard yields a statewide 3-phase-power GIS data set that is updated at least annually.

VT Zoning GIS Data Standard

15 November 2017
The VT Zoning GIS Data Standard seeks to: 1. Define a data framework for using GIS to digitally map municipal zoning district information. 2. Provide a solution that can be used to keep a geographical representation of zoning districts up to date as amendments occur. 3. Provide a time-aware solution that can be used to retrieve historical zoning information. 4. Provide a data framework that supports data integrity, spatial reliability, and appropriate data use. 5. Provide the data framework as a resource that can be extended to meet local municipal business needs.

Vermont Protected Lands Geospatial Data Standard

09 November 2016
The Vermont Protected Lands Geospatial Data Standard seeks to: 1. Define attributes and acceptable attribute values for a geospatial database identifying protected land in Vermont. 2. Define data format and structure for the Protected Lands Database 3. Define Metadata requirements for the Protected Lands Database 4. Provide procedures for submitting new or updated Protected Lands Geospatial Data to VCGI, so that the data can be included in the next update to the Protected Lands Database. 5. Define the intended time frame for updates to the Protected Lands Database


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Vermont Center for Geographic Information
133 State Street
Montpelier, VT 05633-0210
Email VCGI

Tim Terway, Helpful GIS Professional
(802) 585-0820

John E. Adams, Director
(802) 522-0172

VCGI is your source for the State of Vermont's geospatial data, information, and activities.