Engineering Survey Services

Reconnaissance Survey Services

Preliminary site assessment and route feasibility investigations for infrastructure projects across Ahmedabad, Gujarat, and pan-India — identifying terrain constraints before you invest in detailed surveys.

500+ Projects Assessed

20+ States Covered

15+ Years Experience

BIS Standards Compliant

HRP Infra team conducting reconnaissance survey in Gujarat terrain

25+ Years of Survey Excellence

What Is Reconnaissance Survey?

The Essential First Step in Infrastructure Planning

A reconnaissance survey is the foundational phase of every infrastructure project. Before detailed engineering begins, our experts physically traverse the project corridor to evaluate terrain, land use, obstacles, and alternative routes — delivering critical data that shapes project feasibility and cost estimates.

HRP Infra's reconnaissance teams operate across Gujarat and all major Indian states, equipped with GPS instruments, drone-assisted aerial views, and satellite imagery analysis to produce accurate preliminary assessments for pipelines, highways, water supply networks, and irrigation schemes.

GPS + Drone Assisted: Real-time positioning and aerial imagery reduce fieldwork time by up to 40%.

Multi-Route Analysis: We evaluate 2–3 route alternatives so you choose the most cost-effective alignment.

BIS & MoEF Compliance: All assessments adhere to Bureau of Indian Standards and regulatory guidelines.

Our Capabilities

Types of Reconnaissance Survey We Offer

From pipeline corridors to dam sites — HRP Infra covers every category of preliminary survey needed for infrastructure development in India.

Route & Corridor Reconnaissance

Systematic walkover and satellite-aided assessment of proposed pipeline, road, or utility corridors to identify alignment constraints, land acquisition needs, and crossing challenges.

Site Feasibility Assessment

Evaluation of proposed facility sites — pump stations, treatment plants, substations — for geotechnical suitability, access, utilities, and regulatory setback compliance.

Aerial & Drone Reconnaissance

UAV-based aerial surveys combined with high-resolution orthomosaic mapping to cover difficult or inaccessible terrain rapidly and safely.

Terrain & Obstacle Identification

Cataloguing rivers, highways, railways, forests, utilities, and built-up areas within the project corridor — essential for crossing design and environmental clearances.

Alternative Alignment Study

Comparative analysis of two or more route alternatives with cost, constructability, and environmental impact scoring to recommend the optimal alignment.

Photographic & Video Documentation

Geo-tagged photographic records and video documentation of the project corridor, suitable for DPR submissions, client presentations, and regulatory approvals.

Our Methodology

Step-by-Step Reconnaissance Survey Process

A structured, phased approach that maximises data quality while minimising project preparation time.

Phase 01

Desk Study & Satellite Analysis

Review of toposheet maps, satellite imagery, Google Earth, and existing project reports to identify the preliminary corridor and key challenges before field mobilisation.

Phase 02

Field Walkover & GPS Traverse

Ground-truth validation of the proposed corridor with GPS traverse, obstacle logging, and photographic documentation at regular intervals and key crossing points.

Phase 03

Drone & Aerial Survey

UAV-based aerial reconnaissance for inaccessible or dense-forest areas, generating orthomosaic imagery and preliminary digital terrain models of the corridor.

Phase 04

Alternative Route Comparison

Comparative tabulation of route alternatives based on length, crossings, land acquisition area, environmental sensitivity, and estimated cost — presented with scoring matrix.

Phase 05

Report & Recommended Alignment

Submission of a comprehensive Reconnaissance Report with recommended alignment, preliminary maps, photographic annex, and input data for DPR / detailed engineering survey.

Why HRP Infra

Advantages of Our Reconnaissance Survey Services

Trusted by IOCL, GAIL, Torrent Gas, and Gujarat Jal Boards — here's what makes HRP Infra the preferred survey partner.

Faster Project Clearance

Early identification of obstacles reduces design changes during execution, accelerating regulatory approvals and financial closures.

Cost Optimisation

Selecting the right alignment from the start can reduce construction costs by 10–30% by avoiding expensive crossings and land acquisition.

Experienced Multidisciplinary Team

Civil engineers, GIS specialists, and environmental experts working together to deliver integrated reconnaissance assessments.

All-India Coverage

Active field teams in Gujarat, Rajasthan, Tamil Nadu, Andhra Pradesh, UP and more — enabling rapid site mobilisation nationwide.

Seamless DPR Integration

Reconnaissance outputs are structured as direct inputs for our DPR & Detailed Engineering Survey teams — no handover friction.

BIS & CPHEEO Compliance

All survey work follows BIS standards and CPHEEO manual guidelines, ensuring outputs are accepted by government and regulatory bodies.

E-E-A-T: Tools & Standards

Equipment & Technology We Use

HRP Infra invests in industry-leading survey technology to deliver data you can trust.

DGPS / RTK GPS Centimetre accuracy

UAV / Drones Aerial reconnaissance

GIS Software ArcGIS / QGIS

Remote Sensing Sentinel / Landsat

Total Station 1" angular accuracy

SOI Toposheets 1:50000 scale

AutoCAD / Civil 3D Mapping & design

360° Field Cameras Geo-tagged docs

Got Questions?

Frequently Asked Questions

Everything you need to know about reconnaissance survey services in India.

What is a reconnaissance survey in engineering?

A reconnaissance survey is a preliminary field investigation to assess the suitability of a site or route for an infrastructure project. It identifies major obstacles, terrain characteristics, land-use patterns, and logistical constraints before detailed surveys are conducted — saving time and cost on project planning.

How long does a reconnaissance survey take?

The duration depends on the project scale. For pipeline corridors of 50–200 km, a reconnaissance survey typically takes 5–15 working days. For smaller sites in Ahmedabad or Gujarat, it can be completed in 2–5 days. HRP Infra uses GPS, satellite imagery, and aerial reconnaissance to expedite the process.

What is the difference between reconnaissance survey and detailed engineering survey?

A reconnaissance survey is the first phase — it provides a general picture of the terrain, identifies route alternatives, and highlights key constraints at a macro level. A detailed engineering survey follows with precise measurements, cross-sections, L-sections, and accurate geospatial data required for actual design and construction.

Does HRP Infra conduct reconnaissance surveys outside Gujarat?

Yes. HRP Infra Pvt. Ltd., headquartered in Ahmedabad, has conducted reconnaissance surveys across multiple Indian states including Rajasthan, Madhya Pradesh, Tamil Nadu, Andhra Pradesh, Karnataka, and Uttar Pradesh for oil & gas, water, and road infrastructure projects.

What deliverables are produced from a reconnaissance survey?

Typical deliverables include: a reconnaissance report with photographic documentation, recommended route/site alternatives, preliminary alignment maps, satellite imagery overlays, identified crossing points, obstacle inventory, and a preliminary cost impact assessment.