When Do You Need a Topographic Survey?

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Topographic surveys provide essential information for projects where existing ground elevations and physical site conditions affect planning, design, or construction.

Common applications include:

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• Site Development: Establish existing terrain conditions for residential, commercial, and land development projects.

• Drainage Design: Provide elevation information used by engineers to evaluate existing drainage patterns and design improvements.

• Grading Plans: Support proposed grading, earthwork, and site preparation.

• Building Design: Document ground elevations and existing site features for architects and engineers.

• Roadways and Access: Support the design of driveways, roads, and other site access improvements.

• Utility Planning: Locate accessible, visible utility features and obtain elevations or measurements when included in the project scope.

What Does a Topographic Survey Include?

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The information collected during a topographic survey depends on the project's intended use, site conditions, and agreed scope of services.

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Typical topographic survey deliverables may include:

• Ground elevation measurements across the surveyed area.

• Contour lines illustrating changes in terrain elevation.

• Spot elevations at significant site features.

• Existing buildings, pavement, and other visible improvements.

• Drainage features, ditches, and relevant surface conditions.

• Visible utility structures and accessible utility information, when included in the scope.

• Horizontal and vertical control information.

• A professionally prepared topographic survey drawing or digital design file, as specified in the agreement.

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Topographic surveys are frequently used alongside boundary surveys, but they serve different purposes. A topographic survey does not automatically establish or certify property boundaries unless boundary surveying is included in the agreed scope of services.

UNDERSTANDING YOUR SURVEY

Understanding Your Topographic Survey

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A completed topographic survey provides a representation of existing site elevations and physical features that can be used by design professionals to evaluate and plan improvements.

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Depending on the project requirements, deliverables may include contour mapping, spot elevations, existing feature information, and digital files compatible with engineering and design workflows.

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Repset Survey LLC works with clients and design professionals to establish appropriate survey limits, required features, elevation information, and deliverable formats before beginning the project.