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Related Experiment Video

Updated: Aug 20, 2025

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UAV-borne LiDAR revolutionizing groundwater level mapping.

S García-López1, M Vélez-Nicolás1, P Zarandona-Palacio2

  • 1Department of Earth Sciences, University of Cadiz, Campus Rio San Pedro, s/n, 11510 Puerto Real, Spain.

The Science of the Total Environment
|November 20, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel drone-based LiDAR method for remote piezometric level measurement in hydrogeology. This technique offers high accuracy, improving groundwater resource management and reducing traditional fieldwork.

Keywords:
Drone applicationsGroundwaterHydrogeologyPiezometric levelUAV-LiDARVertical accuracy

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Area of Science:

  • Hydrogeology
  • Geospatial Technology
  • Environmental Monitoring

Background:

  • Piezometric level measurement is crucial for groundwater resource assessment and management.
  • Traditional methods can be labor-intensive and may have limitations in accessibility and data gaps.
  • Accurate piezometric data is essential for understanding aquifer dynamics and ensuring sustainable water use.

Purpose of the Study:

  • To develop and validate a novel methodology for remote piezometric level acquisition using drone-borne LiDAR.
  • To assess the accuracy and efficiency of the proposed UAV-LiDAR technique compared to traditional methods.
  • To provide an effective alternative for monitoring groundwater levels, especially in extensive or inaccessible areas.

Main Methods:

  • A workflow involving flight planning, LiDAR data acquisition via drone, point cloud generation, and data processing was developed.
  • The methodology was applied to a coastal aquifer with numerous monitoring wells.
  • Statistical analysis was performed to extract piezometric information and assess vertical accuracy.

Main Results:

  • The UAV-LiDAR methodology achieved high vertical accuracies for piezometric level measurements (RMSE of 5 cm).
  • The method demonstrated vertical accuracies three times better than those derived from the best available Digital Terrain Model (DTM) in Spain.
  • The technique eliminates the need for laborious pre-campaign leveling work.

Conclusions:

  • Drone-borne LiDAR offers an effective and accurate alternative/complementary technique for piezometric level measurement.
  • This method enhances the monitoring of groundwater resources, potentially reducing data gaps and improving management strategies.
  • The technology allows for rapid monitoring of large or difficult-to-access areas, optimizing hydrogeological studies.