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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Washington DC Boundary Stones Points

Metadata Updated: February 5, 2025

The dataset contains locations and attributes of DC Boundary stones. A database provided by A. Morton Thomas & Associates, Inc. identified DC Boundary stone locations. DC Boundary stones field surveyed by GPS and conventional survey methods. Surveyed accuracy is +/- 5cm horizontal and +/- 9cm vertical.STONES North, NE1, NE8, East, SE1, SE9, SW5, West, NW1, NW2, NW4, NW5, NW9 = Field Survey Method: Conventional - 2 survey control points were set at the site utilizing GPS-RTK. Conventional survey total station was then utilized to data collect angle and distance measurements to the stone. The Stone was located at the top center point for both upright and leaning conditions. 3 color digital photos were obtained for the stone. A measure down was obtained from the top of stone to the ground. STONES NE2, NE3, NE4, NE5, NE6, NE7, NE9, SE2, SE3, SE5, SE6, SE7, SE8, SW1, SW2, SW3, SW4, SW6, SW7, SW8, SW9, NW3, NW7, NW 8 = Field Survey Method: GPS-RTK A minimum of 3 consecutive GPS-RTK observations were made with each observation being a minimum of 30 seconds in length with data collected at 1 second intervals. The observations were averaged to produce the resulting coordinates and data was reviewed to confirm project accuracies were met. The Stone was located at the top center point for both upright and leaning conditions. 3 color digital photos were obtained for the stone. A measure down was obtained from the top of stone to the ground. STONE SE4 = No survey worked performed. Stone is located in private residence waiting to be reset by joint survey society effort. No plans at this time for resetting STONE South = Could not survey due to site being under construction with stone wrapped in burlap and packed in sand. Approximate coordinates (+/- 0.4') obtained from AMT surveyor working for PCC at Woodrow Wilson Bridge

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: Creative Commons Attribution

Downloads & Resources

Dates

Metadata Created Date April 30, 2024
Metadata Updated Date February 5, 2025

Metadata Source

Harvested from DC data

Additional Metadata

Resource Type Dataset
Metadata Created Date April 30, 2024
Metadata Updated Date February 5, 2025
Publisher Office of the Chief Technology Officer
Maintainer
Identifier https://www.arcgis.com/home/item.html?id=71432cce5f3d40e799245d781ab8c00d&sublayer=42
Data First Published 2015-02-27T21:10:08.000Z
Data Last Modified 2023-06-28T18:51:12.000Z
Category geospatial
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 1f98e1d0-e418-4a45-b767-3959fe2ef0ef
Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
Harvest Source Title DC data
Homepage URL https://opendata.dc.gov/datasets/DCGIS::washington-dc-boundary-stones-points
License https://creativecommons.org/licenses/by/4.0
Metadata Type geospatial
Old Spatial -77.1726,38.7902,-76.9090,38.9960
Source Datajson Identifier True
Source Hash 41c3100053bf61ce6c467854458089ca7657706b014b79a8a8dc13ed87c16ee8
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -77.1726, 38.7902, -77.1726, 38.9960, -76.9090, 38.9960, -76.9090, 38.7902, -77.1726, 38.7902}

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