Contour plans from drone-derived terrain data for design, earthworks and site planning. Agree the survey extent, surface, contour interval, datum and checks around the decision your project needs to make.
HR Surveyors provides drone-derived topographic data and contour mapping for project planning and design. A contour plan is a specific output: it shows levels derived from the agreed surface model. Tell us whether the design needs ground terrain, a visible surface, critical features or supporting ground observations so the capture and checks can be scoped appropriately.
For a broader package, see our aerial mapping services. Our drone surveying guide explains the differences between terrain models, surface models and other outputs, and our LiDAR service covers that capture method.
Define the site limits and whether the plan needs a ground terrain model or the visible surface. Vegetation, structures, water and access constraints can change the capture method or require additional ground observations.
Agree the contour interval, project grid, height datum and required features with the design team. Confirm whether the deliverable also needs breaklines, spot levels or the supporting surface model.
Specify the project tolerance, independent checks, supporting records and accepted file formats. The contour interval is a drawing choice; it does not by itself establish the accuracy of the underlying data.
Tolerance and verification agreed for the required surface and project use
Photogrammetry, LiDAR and ground observations selected to suit site conditions
Project datum, accepted deliverables and checking requirements defined in the brief
Include the site extent, intended use, surface type, coordinate and height systems, contour interval, required features, output formats and checking requirements. Attach the designer or asset owner specification where one applies.
No. Contour interval describes how the surface is drawn. Dataset accuracy depends on the capture, control, surface interpretation and checks. Agree both the required interval and the tolerance for the project.
Site conditions determine whether the required ground surface can be captured. Photogrammetry relies on visible surfaces; LiDAR may capture ground returns through vegetation gaps, but classification and checks are still needed. Obscured or critical features may require ground survey.
Tell us which files and features the project needs. A contour enquiry can be scoped around that output, while imagery, point clouds, terrain models and other products should be specified separately if required.
Explore our portfolio of successful projects demonstrating our expertise and precision delivery across diverse challenges.
Includes Beckenham, Carlisle, Queens Park, Cannington, and Oats Street Stations
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Start Your ProjectDiscover complementary surveying services often combined with this solution for comprehensive project delivery.
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Send your site address, survey extent, intended use and designer's requirements. We can discuss the capture method, deliverables and checks for your contour plan.