20170725
23322400
1.0
FGDC CSDGM Metadata
FALSE
Buildings
3071994.500028
3095495.135113
1679626.607604
1711781.745721
1
002
Projected
GCS_North_American_1983
Linear Unit: Foot_US (0.304801)
NAD_1983_StatePlane_Colorado_Central_FIPS_0502_Feet
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20190618
10433900
20250626
11132000
1200
1200
ISO19139
ArcGIS Metadata
1.0
Josh Pendleton
Denver Regional Council of Governments (DRCOG)
GIS Specialist
303 455-1000
303 480-6790
1290 Broadway, Suite 700
Denver
CO
80203-5606
U.S.
geospatial@drcog.org
8am to 5pm US Mountain Time
Contact resellers
Order from either Map Mart or Colorado Aerial Photo Service
Geodatabase
ArcGIS 10.1
ESRI
DRCOG Building Roofprints Feature (2016)
Feature Class
2017-01-01T00:00:00
1.0
Denver Regional Council of Governments (DRCOG)
vector digital data
Orthoimagery - 2016
DRCOG Denver Region Urbanized Project Area
Buildings
Building Roofprints
City of Golden
Melissa Crocker
GIS Coordinator
<DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>This feature was compiled from DRCOG 2024 Denver Regional Aerial Photography Project (DRAPP) imagery. This dataset is an update to previously collected data. Features were originally delineated from 2014 aerial imagery, updated in 2016, 2018, 2020, 2022 and then again in 2024 to create this dataset. Data acquired as part of partnership with DRCOG</SPAN></SPAN><SPAN><SPAN>. Layer updated June 2025. Updated biannually.</SPAN></SPAN></P><DIV><DIV><P><SPAN /></P></DIV></DIV></DIV>
Building roofprints delineated from 2024 aerial imagery from DRCOG that intersect with Golden City limits within 500 feet.
DRCOG
Golden
Colorado
building roofprint
DRCOG
buildings
roofprints
This data is intended for informational purposes only. DRCOG provides this information on an "as is" basis and makes no guarantee, representation or warranty, either express or implied, that the data will be error free. DRCOG further makes no guarantees, representations or warranties, either express or implied, as to the completeness, accuracy or correctness of the data, or as to merchantability or fitness of the data for a particular use or purpose. DRCOG is not responsible to any user for any costs, expenses, liabilities or damages arising from inconsistencies in its data or from any use of the information.
Contact DRCOG
<DIV STYLE="text-align:Left;"><P STYLE="font-weight:bold;margin:0 0 11 0;"><SPAN>Limited to internal use per agreement with DRCOG. </SPAN></P></DIV>
-105.58167029
-104.3734253
39.44898487
40.21017192
Ground condition
2016-03-04
2016-06-22
Capture criteria: Only permanent structures are captured. Collect buildings with area >= 48 sq. ft. and over 5 ft. in height. Arms and indentations should be 2.5 ft or greater are captured. Canopies, carport covers, and sheds are included. For multi-level commercial/industrial buildings, capture each level as a unique record IF the building is >= 1000 sq. ft. and the multi-level roof levels are >= 400 sq. ft. in area and over 5.0 ft in height. Each polygon is a separate record. Polygons that are part of the same building have a matching building ID. For pitched roofs, collect the highest point to get the building height. The lowest point will be a common lowest point if multi-level.
Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270
1
-105.244143
-105.160199
39.787370
39.698886
DRCOG
Melissa Crocker
City of Golden
GIS Coordinator
Compliance with the collection and accuracy standard was ensured by the placement of GPS ground control prior to the acquisition of aerial imagery. A softcopy aerotriangulation adjustment is performed on the aerial imagery is Leica XPro software. Accuracy of the stereo compiled features is a function of the aerotriangulation accuracy as summarized by the X, Y, Z RMSE statistics of the ground control points.
Completeness is ensured in the final vector editing process by comparison to the 2016 digital orthoimages as a backdrop to the building roofprint vector features.
There are no Attributes in this data set.
The horizontal accuracy of the delivered Edge of Pavement (EOP) lines features is a function of the aerotriangulation accuracy as expressed by the X and Y RMSE statistics of the ground control. DRCOG stated accuracy requirement (AppendixB_Feature Requirements_20151002.xlsx) is National Map Accuracy Standard (NMAS) for 1"=100' scale mapping. NMAS accuracy for map scales larger than 1:20000 horizontal tolerance is 1/30" for 90% of well defined points or, 3.0' horizontal accuracy. RMSE of the control is X = 0.138' and Y = 0.148'.
The Horizontal_Positional_Accuracy_Value was tested in accordance with Geospatial Positioning Accuracy Standards Part 3: National Standard for Spatial Data Accuracy (NSSDA), FGDC-STD-007.3-1998. NSSDA horizontal accuracy is 1.7308*RMSE_r or 1.7308*0.202 = 0.35'. NSSDA Horizontal accuracy of the aerotriangulated aerial imagery meets or exceeds the NMAS requirement of 1/30" for 1"100' scale mapping.
0.35
The vertical accuracy of the delivered Edge of Pavement (EOP) lines features is a function of the aerotriangulation accuracy as expressed by the Z RMSE statistics of the ground control. DRCOG stated accuracy requirement (Appendix B_Feature Requirements_20150806_notFinalized.xlsx) is National Map Accuracy Standard (NMAS) for 1"=100' scale mapping. Vertical NMAS accuracy for map scales suitable for 2' contour mapping is defined as one half the contour interval or 1' for 90% of well defined points. RMSE of the control is Z = 0.085.
The Vertical_Positional_Accuracy_Value was tested in accordance with Geospatial Positioning Accuracy Standards Part 3: National Standard for Spatial Data Accuracy (NSSDA), FGDC-STD-007.3-1998. NSSDA vertical accuracy is 1.9600*RMSE_r or 1.9600*0.085 = 0.17'. NSSDA Vertical accuracy of the aerotriangulated aerial imagery meets or exceeds the NMAS requirement of 1' for 1"100' scale 2' contour mapping.
0.17
The aerial imagery was captured by Sanborn using a Vexcel Ultracam Eagle aerial sensor. This imagery is owned and provided to Kucera by DRCOG.
1200
Aerial imagery
IMG
1.0
None
None
Sanborn
raster digital data
Ground condition
2016-03-04
2016-06-22
Aerotriangulated digital aerial imagery is used to compile surface planimetric features in a softcopy stereo environment. Software used are BAE SocetSet, ZI SSK and Cardinal VROne.
1200
Aerial imagery
IMG
1.0
Sanborn
None
None
raster digital data
Ground condition
2016-03-04
2016-06-22
the map editing process performs the same two functions for the planimetric and topographic data, which is; 1. to check the data for accuracy, and 2. make the mapping more aesthetically pleasing and easy to work with. The various map features are assigned unique digital layers according to Kucera's general layering scheme (or a more "custom" layering scheme if specified by the client). "Layering" meaning the separation of like features to a unique digital level that can be viewed, located, counted or otherwise manipulated to the exclusion of other features/levels. Planimetrically, a good example of the layering system would be that all of the major buildings such as houses and commercial buildings be placed on their own layer named something like "BUILDINGS" so they can more easily be viewed or worked separately from more inconsequential structures such as small storage buildings or sheds that would be own their own layer named "MINOR BUILDINGS" or whatever the client would like those particular layers named. Other planimetric examples of the use of layering would be the use of separate digital layers to differentiate paved roads from unpaved roads, treelines from brushlines, ditches from streams, etc. The finished mapping is then usually gridded, the appropriate title block information is added (info regarding the scale, contour interval, mapping location, client name, date of photography or Lidar collection, etc...), translated from Kucera's in-house editing software - primarily VrOne - into the digital format and layering scheme requested by the client (usually AutoCAD and/or ESRI) and delivered to the client on a DVD or by means of electronic delivery (email or posting to the FTP site for the client to download).
Edited Planimetric/Topographic Mapping
BLDG ROOFPRINTS
1.0
None
None
Kucera International Inc.
DWG, Geodatabase
Ground condition
2017-01-01
Planimetric feature collection is performed in one or more of BAE SocetSet, ZI SSK, Cardinal VROne softcopy digital stereoscopic compilation workstations.
2017-01-01
IMG
BLDG ROOFPRINTS
Editing of compiled features takes place in VrOne environment. Editing consists of layering validation, duplicate point removal, trimming lines, closing of polygons, etc. Vectors are compared to ortho product to validate geometric accuracy. All compilation is cut to project boundary. Where building polygons that intersect project boundary the buildings are left whole.
2017-01-01
BLDG ROOFPRINTS
BLDG ROOFPRINTS
VrOne files translated to DWG format.
2017-01-01
BLDG ROOFPRINTS
DWG
DWG files translated to ESRI Geodatabase format.
2017-01-01
DWG
GDB
New digital aerial imagery is collected concurrently with the lidar data and triangulated to provide stereo coverage of the project area in the desired coordinate system and datums. See orthoimage metadata for collection and processing details.
2017-01-01
IMG
IMG
Buildings
Outlines of permanent visible structures captured at the corners of the roof (eave)
DRGOG
Feature Class
9459
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Shape
Geometry
4
0
0
Feature geometry.
Esri
Coordinates defining the features.
CreateUser
Vendor name
DRCOG
Kucera International, Inc.
Name of vendor creating the entity feature
DRCOG
CreateUser
String
32
0
0
CreateDate
Date attribute is created.
DRCOG
mm/dd/yyyy
Month, day and year the feature entity is created
DRCOG
CreateDate
Date
8
0
0
Comments
Text that explains anything a user needs to know to interpret how or why the feature was delineated, if not obvious according to the capture criteria.
DRGOG
Residential includes apartment complexes. Schools and churches are public. Buildings under construction, foundations, and ruins will not have heights. MISC should only be used when there are no other options (includes Agricultural buildings)
Comments
String
100
0
0
Bldg_Type
The type of building, determined by 1) visual inspection, 2) IG data, 3) zoning data 4) other
DRCOG
Residential, Commercial, Industrial, Medical, Public, Garage/shed, Parking Structure, Tank, Foundation/Ruin, Misc.
Building types
DRCOG
Bldg Type
String
50
0
0
Source
Description of how the building type was determined
DRCOG
Visual, IG Data, Zoning Data, Other (describe)
Source of building identification
DRCOG
Source
String
20
0
0
Building_ID
Unique ID, can be randomly generated
DRCOG
Unique ID assigned to individual roofprints
Unique ID assigned to individual roofprints
DRCOG
Building ID
Integer
4
10
0
Ground_Elevation
Elevation of terrain at the building roofprint
DRCOG
feet
Elevation of terrain at the building roofprint
DRCOG
Ground Elevation
SmallInteger
2
5
0
Bldg_Height
Height of building roofprint above terrain
DRCOG
feet
Height of building roofprint above terrain
DRCOG
Bldg Height
SmallInteger
2
5
0
Update_Status
Update Status
String
1
0
0
created_user
created_user
String
255
0
0
created_date
created_date
Date
8
0
0
last_edited_user
last_edited_user
String
255
0
0
last_edited_date
last_edited_date
Date
8
0
0
FDPP
Fire Department Pre Plan Survey
String
3
0
0
BuildingArea
Building Area Sq Feet
Double
8
38
8
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
dataset
EPSG
5.3(9.0.0)
9459
Simple
FALSE
9459
TRUE
FALSE
20250626