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Case Study: Detailed Topographical and Cadastral Survey Using Drones for a 2320 Hectare Pressurised Pipeline & Irrigation Project Location: Gram- Sonakpura, Barauta, Imlauta, Shahpura, Gurha, Tehsil Garautha, District Jhansi
Introduction
Npackets Private Limited undertook the ambitious project of conducting a detailed topographical and cadastral survey for a pressurised pipeline and irrigation project spanning 2320 hectares. This project covered multiple villages, including Sonakpura, Barauta, Imlauta, Shahpura, and Gurha in the Tehsil Garautha region of Jhansi District.
Objectives
To provide accurate topographical data for the design and implementation of the irrigation project. To create a comprehensive cadastral map for land ownership and usage assessment. To ensure precise planning for the pressurised pipeline layout.
Methodology
1. Pre-Survey Planning: Site Reconnaissance: Initial visits to understand the terrain and identify potential obstacles. Flight Planning: Utilizing advanced software to design optimal flight paths ensuring complete coverage of the area.
2. Data Collection: Drone Survey: Using high-resolution UAVs equipped with LiDAR and photogrammetric cameras to capture detailed images and 3D data. DGPS Survey: Establishing ground control points (GCPs) with Differential GPS to enhance the accuracy of the aerial data.
3. Data Processing: Orthomosaic Generation: Creating high-resolution, georeferenced orthomosaic maps from the aerial imagery. DTM and DSM Creation: Developing Digital Terrain Models (DTM) and Digital Surface Models (DSM) for accurate representation of the terrain. Contour Mapping: Generating detailed contour maps at specified intervals. Cadastral Mapping: Integrating cadastral data to produce precise property boundaries and land ownership maps.
4. Analysis and Reporting: Data Validation: Cross-checking the survey data with existing records and ground truthing.
Report Generation: Compiling the findings into comprehensive reports, including maps, charts, and 3D models.
Challenges Varied Terrain: The diverse topography required meticulous planning and execution to ensure complete data coverage. Weather Conditions: Adverse weather occasionally impacted drone flights, necessitating flexible scheduling.
Results High-Resolution Maps: Generated orthomosaic maps with a resolution sufficient for detailed planning and analysis. Accurate Models: Developed precise DTM and DSM to aid in the design of the irrigation system. Cadastral Clarity: Produced comprehensive cadastral maps to assist in land management and dispute resolution. Efficient Planning: The accurate data enabled more efficient and cost-effective project planning and execution.

Conclusion
The detailed topographical and cadastral survey conducted by Npackets Private Limited significantly contributed to the successful planning and implementation of the pressurised pipeline and irrigation project. Our use of cutting-edge drone and DGPS technology ensured the accuracy and reliability of the data, supporting effective decision-making and project execution.

Client Testimonial
"Npackets' comprehensive survey and accurate data have been instrumental in the successful planning of our irrigation project. Their professional approach and use of advanced technology have set a high standard for surveying services."

What we did

NPackets Private Limited successfully completed the preliminary survey work to lay down a pressurized pipeline irrigation system and conducted a detailed topographical and cadastral survey using drones for Gata, Pasrai, and Dhurwai Villages (Cluster 2) in Jhansi District, Uttar Pradesh. The project spanned an area of 1258 hectares and aimed to facilitate the development of an efficient and sustainable irrigation system.
Objectives
Conduct a preliminary survey to plan the layout of a pressurized pipeline irrigation system. Perform a detailed topographical and cadastral survey to provide accurate mapping and land parcel information. Utilize advanced drone technology to enhance the accuracy and efficiency of data collection and analysis. Methodology
Preliminary Survey:
Planning and Coordination: Initial meetings with local authorities and stakeholders to understand project requirements and constraints. Route Planning: Use satellite imagery and existing maps to plan the preliminary route of the irrigation pipeline. Field Reconnaissance: On-ground inspection to validate planned routes and identify potential obstacles or challenges.
Drone-Based Topographical and Cadastral Survey:
Equipment Used: High-resolution drones equipped with RGB cameras and GPS technology. Flight Planning: Create flight paths to cover the entire 1258 hectares, ensuring optimal overlap and coverage. Data Acquisition: Conduct drone flights to capture high-resolution images and GPS coordinates of the surveyed area.
Data Processing:
Orthomosaic Generation: Stitch images together to create an accurate and detailed orthomosaic map.
Digital Terrain Model (DTM): Develop a DTM to represent the bare earth surface.

Digital Surface Model (DSM): Generate a DSM to include natural and man-made features.
Contour Mapping: Create contour maps for detailed elevation information.
Cadastral Survey:
Identify and map land parcels within the surveyed area. Cross-reference drone data with existing cadastral records to update and verify boundaries.
Analysis and Reporting:
Data Validation: Compare drone data with ground-truth data to ensure accuracy. Deliverables: Provide detailed maps, models, and reports including orthomosaic maps, DTMs, DSMs, and cadastral maps. Stakeholder Review: Present findings and maps to stakeholders for feedback and approval.
Challenges and Solutions
Weather Conditions: Unpredictable weather was managed by scheduling flights during optimal weather windows and using drones with stability features. Data Volume: Large data sets were efficiently processed using advanced software and cloud-based storage solutions.
Results
Accurate Mapping: The project produced high-resolution maps and models that significantly improved the accuracy of planning and implementation for the irrigation system. Efficient Survey: The use of drones reduced the time and manpower required for the survey compared to traditional methods. Stakeholder Confidence: Detailed and accurate data provided stakeholders with confidence in the project planning and execution.
Conclusion

The successful completion of the preliminary and detailed topographical and cadastral survey for Gata, Pasrai, and Dhurwai Villages in Jhansi District underscores NPackets' commitment to leveraging advanced drone technology for infrastructure development projects. The data and insights provided have laid a strong foundation for the efficient implementation of the pressurized pipeline irrigation system, ensuring long-term benefits for the local agricultural community.

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Npackets Private Limited executed an extensive drone survey for the Yamunotri Ropeway project in Uttarakhand. Using advanced UAV technology, we generated high-resolution orthomosaic images, Digital Terrain Models (DTM), Digital Surface Models (DSM), and detailed topographical contours. Our precise aerial data ensured accurate planning and efficient execution of the ropeway project.

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