Topographic Surveys

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Services: Topographic Surveys

topographic surveysTopographic Surveys are performed to generate maps that display the elevation data and terrain of a property. The elevation data, which is typically depicted by contour lines and spot elevations, can be prepared using different methods that depend on the scope and requirements of the project. Topographic surveys are typically required by local land use agencies and commissions when a property owner or developer is interested in making improvements to a piece of land.

On small projects, such as house plans or small commercial site development plans, field generated topography is typically the the most cost effective method that can be performed in an accurate and timely manner. Field generated topography is generally represented as conforming to strict “T-2” standards of accuracy. For larger projects, such as subdivisions or multi-use commercial site development plans, topographic data can be generated through the use of Aerial Photogrammetry. This type of map, which can take weeks to complete, is derived from aerial flight-lines, photographs, and survey ground control of tight vertical accuracy that is tied into the subject property’s boundaries. The resultant accuracies of Aerial Photogrammetric methodologies are generally sufficient for overall site design work, with areas requiring greater detail being augmented by field topography conforming to “T-2” standards.

Other sources of topography may exist for a given property based on the location of the piece of land. These sources, which include United States Geological Survey (USGS) topography and town owned topographic sheets, are derived in most cases from aerial methods and are typically made available to the public. Topography from these sources is sometimes suitable for use during the initial planning stages of a site development project but lacks the accuracy required for the final design or construction of a project.

If you are interested in determining the development potential of a piece of land, it is a good idea to have a topographicsurveyperformed so that you have a good understanding of any limitations of the property. The staff of Arthur H. Howland & Associates, P.C. can help you choose a topographic survey solution that fits your needs. Contact us at (860) 354-9346 so that we can help you get started on the right foot.

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