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VT Geographic Area Names and Codes Standard

This standard defines codes for various incorporated and widely-used geographic areas in Vermont. Existing federal standards are leveraged by this standard to ensure maximum compatibility with state and federal data.
A primary use of these standard codes is to store and link data related to these geographies. One capability of GIS is the creation of thematic maps (maps in which towns or other areas are shaded in based on the values for the different areas). An example would be a thematic map of population density for Vermont's towns. Thematic maps will be easier to produce from various data sources if users adhere to these standard geographic codes.
The inclusion of these codes within state data at both the local and statewide level will also enable the linking of data from different sources and regions to perform analyses across municipalities, statewide, and at the national level.

Land Use / Land Cover Codes

Maps of land use and land cover are fundamental tools for natural
resource management and planning. These land use/cover codes
provide a standard system by which units of land can be categorized.
Land use/cover maps serve to: assess the area and distribution of individual land use/cover
categories (such as cropland and pasture, code 21), show the diversity of the landscape, contrast the land diversity of different regions, monitor changes in land use and/or cover over time.

The VGIS Land Use/Land Cover Codes have been developed to provide compatibility with existing USGS codes, provide codes tailored to Vermont's landscape, permit land coding at a various resolutions (local, regional and
state), avoid and clarify redundant classifications which depend on interpretation.

Digital Data Conversion

The purpose of this document is to provide guidelines covering the
digital conversion of existing manually drawn data into GIS format.
The goal is to obtain the best possible digital map representing an
original analog map. As such, it is assumed that a suitable source map
exists. While the ultimate quality of the database is dependent on the
quality of the source materials and the care used in automation, the
procedures for original mapping are not discussed. It must be
remembered that precise automation procedures will not improve an
inferior base map.

VCGI Procurement of VGIS Data, Services, and Products

This document details the policy of the Vermont Center for Geographic
Information, Inc. (VCGI) in regard to procuring VGIS-compatible
data, services, and products for VCGI customers and for the VGIS
community from public agencies and commercial GIS service
providers. VCGI recognizes the importance and usefulness of all such
public and private sector providers to the Vermont Geographic
Information System (VGIS).
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