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20260527
14041400
building_footprints
668699.275000
805513.522100
4263338.820600
4362788.096800
1
002
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Linear Unit: Meter (1.000000)
WGS_1984_UTM_Zone_12N
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GIS
City of Grand Junction
250 N 5th St.
Grand Junction
CO
81501
USA
gis@gjcity.org
970-256-4070
GIS
City of Grand Junction
250 N 5th St.
Grand Junction
CO
81501
USA
gis@gjcity.org
970-256-4070
GIS
Enterprise Geodatabase Feature Class
Source data: Mesa County, Colorado, produced by an aerial photography contractor under contract to Mesa County. Provided to the City of Grand Junction as a one-time delivery and re-published by the City of Grand Junction GIS Division for local reference.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This data is not accurate for legal descriptions and does not substitute for surveys or official records. Use this data for your convenience, knowing that you and others who may rely on your use assume all risk and responsibility. The City of Grand Junction is not liable for any damages or injuries resulting from the use of this information. </SPAN></P><P><SPAN /></P><P><SPAN>The information included in this dataset is the property of the City of Grand Junction ("City"). You may view, use, download, copy, email, distribute, and/or print the information, subject to the following conditions: (1) The information shall not be used or displayed in any manner for commercial purposes without the written consent of the City; (2) The information shall not be used or displayed in any manner for public purposes unless attributed to the City; (3) The information may be used solely for personal, informational, non-commercial purposes; (4) The information is not altered, transformed, manipulated, or otherwise modified, unless the City consents. </SPAN></P></DIV></DIV></DIV>
GIS
City of Grand Junction
250 N 5th St.
Grand Junction
CO
81501
US
gis@gjcity.org
970-256-4070
GIS
Esri ArcGIS 12.4.2.19948
Building Footprints
1
-109.065346
-107.454173
39.398112
38.466062
Polygon building footprints for Mesa County, Colorado, derived from spring 2015 aerial photography by a contractor for Mesa County and provided to the City of Grand Junction as a one-time delivery. Used by City staff and the public as a general structure reference. Not maintained or updated; reflects 2015 conditions only.
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>WHAT: This dataset contains polygon building footprints covering Mesa County, Colorado, as they existed in spring 2015. Each polygon represents a structure identified from aerial imagery. The dataset is countywide in extent and is a single point-in-time snapshot — it has not been updated since the original delivery and does not reflect development, demolition, or other changes that have occurred since 2015.</SPAN></P><P><SPAN>SOURCE & METHODOLOGY: Source footprints were produced by an aerial photography contractor hired by Mesa County, who applied a digital classification model to spring 2015 aerial imagery to identify and extract building footprints. The completed dataset was delivered to Mesa County, who in turn provided it to the City of Grand Junction as a one-time hand-off. No further processing, QA, or review was performed by the City before publication.</SPAN></P><P><SPAN>KEY ATTRIBUTES: TYPE (describes the type of building the polygon represents) and SQ_FT (square footage of the footprint) are the only two fields actively populated and intended for use. Other fields in the schema exist but are largely empty or unreliable and should not be queried or relied upon.</SPAN></P><P><SPAN>UPDATE CYCLE: Not on a recurring update cycle. The dataset was a one-time delivery from Mesa County in 2015. Any future updates would originate from Mesa County, not the City of Grand Junction.</SPAN></P><P><SPAN>KNOWN LIMITATIONS: This dataset reflects 2015 conditions and does not include buildings constructed, modified, or demolished since spring 2015 — a material limitation given the age of the data. The footprints were extracted via automated digital classification from aerial imagery, and positional accuracy was not independently verified. The classification model produced false positives in some cases — for example, parked semi-trucks and trailers were sometimes captured as building footprints. Most attribute fields beyond TYPE and SQ_FT are unpopulated or unreliable. Because of the age and known errors, users should contact the GIS Division before relying on this data for any decision-making purpose.</SPAN></P><P><SPAN>CONTACT: City of Grand Junction GIS Division. For data questions or to report errors, email gis@gjcity.org. Because this dataset originated with Mesa County, questions about underlying methodology or any potential refresh may need to be directed there.</SPAN></P></DIV></DIV>
City of Grand Junction
Mesa County
Colorado
GIS Division
building footprints
structures
buildings
polygons
footprints
structure inventory
spatial analysis
density analysis
public reference
one-time delivery
reference
building outlines
structures polygons
2015 imagery
aerial photo derived
dataset
EPSG
2.1(3.0.1)
152
Simple
FALSE
152
TRUE
FALSE
20260527