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This layer is to be used primarily for cartographic overlay. This data was developed for use by Prince William County staff in the preparation of Prince William County's map products, projects and applications. This feature class includes walls and fences.
Level: High
Owner: PWC
Updated: 09/23/2021
Frequency: Annually |
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This layer is to be used primarily for cartographic overlay. This data was developed for use by Prince William County staff in the preparation of Prince William County's map products, projects and applications. This feature class includes walls and fences.
Level: High
Owner: PWC
Updated: 09/23/2021
Frequency: Annually |
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Prince William County Department of Information Technology (DoIT), Geospatial Technology Services (GTS) Program; Fugro Geospatial, Inc; The Sanborn Map Company |
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5000 |
| typeKeywords:
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[] |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class consists of polylines representing fences and walls. Fences and walls include linear man-made vertical barriers such as decorative picket fences, retaining walls, and sound barriers. The layer was originally created by Fugro Geospatial, Inc. for Prince William County from 2017 imagery. It is updated by Prince William County staff in specific areas of interest from aerial imagery and as built plans, as specified in the source data. It was also updated in 2021 on a county-wide by The Sanborn Map Company to indicate which walls are retaining walls, according to the 2017 imagery used for the Fugro update.</SPAN></P><P><SPAN>The collection of aerial photography and production of an ortho quality DEM and orthophotography was executed to capture the existing ground conditions at a specific point in time for the purpose of GIS analysis. Orthophotography along with DEM data typically provides an accurate base for digitally representing geographic features upon which a GIS is built. The Virginia Geographic Information Network Division (VGIN) is the lead public agency in the Commonwealth for spatial data and GIS. VGIN's mission is to facilitate the cost-effective development and use of spatial data, GIS, and related technologies in organizations throughout the Commonwealth.</SPAN></P><P><SPAN>In the spring of 2017, the Commonwealth of Virginia, through the Virginia Geographic Information Network Division (herein referred to as VGIN) of the Virginia Information Technologies Agency (VITA) contracted with Fugro Geospatial, Inc. to provide aerial data acquisition, ground control, aerial triangulation and development of statewide ortho quality DEM and digital orthophotography data. The Virginia Base Mapping Program (VBMP) update project is divided into three collection phases: In 2017, Fugro flew the eastern third of Virginia at one foot resolution, with options for localities and other interested parties to upgrade resolution or purchase other optional products through the state contract. The middle third of Virginia will be flown in 2018 and the western third in 2019. Ortho products are 1-foot resolution statewide with upgrades to 6-inch resolution tiles and 3-inch resolution tiles in various regions within the project area. The Virginia Base Mapping project encompasses the entire land area of the Commonwealth of Virginia over 4 years. The State boundary is buffered by 1000'. Coastal areas of the State bordering the Atlantic Ocean or the Chesapeake Bay are buffered by 1000' or the extent of man-made features extending from shore. This metadata record describes the generation of new Digital Terrain Model (DTM) and contours generated at 2-foot intervals. All products are being delivered in the North American Datum of 1983 (1986), State Plane Virginia North. The vertical datum was the North American Vertical Datum of 1988 (NAVD88) using GEOID12B. </SPAN><SPAN>In 2021, The Sanborn Map Company was contracted to reclassify applicable walls as retaining walls in this feature class.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-size:12pt">1. </SPAN><SPAN STYLE="font-size:12pt">All data Pursuant to Section 54.1-402, paragraph C of the Code of Virginia, which is quoted below, since the data was not created, nor is it maintained under the supervision of a licensed land surveyor. “Any determination of topography or contours, or any depiction of physical improvements, property lines or boundaries is for general information only and shall not be used for the design, modification, or construction of improvements to real property or for flood plain determination</SPAN></P><P><SPAN STYLE="font-size:12pt">2. This data is for reference purposes only and should not be used for design work. </SPAN></P><P><SPAN STYLE="font-size:12pt">3. Prince William County hereby disclaims any and all liability or responsibility for any damage, injury, loss, claim, or lawsuit arising from any error, inaccuracy, or other problem with either the digital maps contained with digital data delivery or digital data delivered. The User hereby releases the County, its officers, agents and all employees and volunteers, from all liability, damage, claims, injuries, or suits arising from any such error, inaccuracy, or problem. Furthermore, the User agrees to indemnify and hold harmless the County and its officers, agents and all employees and volunteers, from any and all claims, liability damages, injuries and suits arising from the use of the digital maps and data therein or thereon by the User, its employees, or assignees, or by any third parties. </SPAN></P><P><SPAN STYLE="font-size:12pt">4. Prince William County reserves the right to deny access to certain datasets. </SPAN></P><P><SPAN STYLE="font-size:12pt">5. The digital maps and data provided hereunder are provided ''as is'' and the County expressly disclaims all warranties, UCC and otherwise, express or implied including warranties as to accuracy of the digital maps, data and merchantability and fitness for a particular purpose, and further expressly disclaims responsibility for all incidental, consequential or special damages arising out of or in connection with the use or performance of the digital maps and data. </SPAN></P><P><SPAN STYLE="font-size:12pt">6. User acknowledges this disclaimer of warranty and expressly waives all warranties express or implied and waives any right of claim for damages incidental, consequential or special, arising out of or in connection with the use or performance of the digital maps and data.</SPAN></P></DIV></DIV></DIV> |
| catalogPath:
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| title:
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Fences and Walls |
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| tags:
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["wall","fence","planimetric","sound barrier","barrier","retaining wall","Prince William County","Prince William","Commonwealth of Virginia","Virginia","VA","Northern Virginia","NOVA","PWC"] |
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en-US |
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| minScale:
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50000 |
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