1.3. History of Mapping: Indian Perspective

As early as 1400 BCE, evidence of some form of boundary surveying has been found in the fertile valleys and plains of the Tigris, Euphrates, and Nile rivers. In India, evidence of map making skills has been found in the Brahmand Purana as far back as the 5th century (Chadha, 1991).

This chunk discusses the origins of surveying and mapping, with references to ancient civilizations and their practices. Evidence suggests that boundary surveying was practiced in regions around prominent rivers, which were essential to agriculture and settlement. In addition, India has a long history of map-making reflected in ancient texts, indicating that these skills have been a significant aspect of land management and territorial representation for centuries.

Think of ancient maps as the early GPS systems for civilizations. Just as GPS helps us navigate today, these maps were vital for ancient people to understand their territory, manage resources, and define boundaries between different areas.

Knowledge of land was presented in graphical form which described the extent and shape of territories. The art of surveying and techniques of mensuration of areas are described in Sulva Sutra (science of mensuration) and in the Arth Shastra of Chanakya, written in the 3rd century BC.

In this chunk, we learn that historical texts like the Sulva Sutra and Arth Shastra contain detailed descriptions of surveying techniques and mensuration. The Sulva Sutras, for instance, outlined measurements needed for constructing altars, which also reflects an early understanding of geometry and spatial reasoning. The Arth Shastra, a more political document, included practical guidelines on land management and governance, which shows the interplay between surveying and statecraft in ancient India.

Imagine reading a manual for an engineering project, which includes both calculations and legislative rules. Similarly, these ancient texts served as guides for not just measuring land but also for understanding how to manage it within the framework of society.

Official surveying and mapping has been in practice in India, since way back 16th century. Raja Todar Mal during Akbar’s and Sher Shah Suri regime introduced agriculture land measurements, termed as cadastral survey, which was done with foot and iron chains (Satyaprakash, 2010).

This chunk highlights the formalization of surveying practices during the Mughal era. Raja Todar Mal's work in standardizing land measurements created a system that was crucial for tax collection and land management. This marked a significant step in the evolution of surveying as a structured profession and established the groundwork for modern cadastral surveys, which are still used today to define property boundaries and manage land.

You can think of this like the introduction of standardized testing in schools. Just as tests ensure all students meet certain benchmarks, cadastral surveys ensured that land measurements were consistent, benefiting both the rulers and the farmers.

The Indian terrain was completely mapped by the painstaking efforts of distinguished surveyors, such as Mr. Lambton and Sir George Everest. The 36 inch theodolite used in the Indian triangulation is shown in Figure 1.3.

In this section, we see how important figures in surveying, such as Major Lambton and Sir George Everest, contributed to mapping India. Their work involved meticulously measuring angles and distances using advanced instruments like the theodolite. This period marked a significant transition to more scientific methods of surveying, which relied on geometry and precision instruments to create accurate maps of the diverse Indian geography.

Consider the work of these surveyors akin to a cartographer today who uses drones and GPS technology to create detailed maps. Just as they laid foundational practices for modern mapping, today's technology builds on those early techniques to ensure accuracy and detail in maps.

Colonel Cautley was given the charge of constructing the Ganga canal. He suggested to James Thomason, the then Lieutenant-Governor of the North-West provinces, about the need to train locals in civil engineering for completing their ongoing projects. This led to the foundation of the country’s first-ever engineering college at Roorkee on September 23, 1847.

This chunk describes a pivotal moment in Indian surveying and engineering history with the establishment of the first engineering college in Roorkee. Recognizing the need for skilled manpower, Colonel Cautley advocated for local education in civil engineering, which not only fulfilled immediate project requirements but also contributed to the institutionalization of engineering education in India.

Think of this like the establishment of computer science programs at universities to meet the demand for tech skills today. Just like those programs train future innovators, the college at Roorkee trained generations of engineers who could contribute to infrastructure development in India.

The Survey of India (SoI), under the Department of Science & Technology, is the oldest scientific department of the Govt. of India, which was set up in 1767 to help consolidate the territories of the British East India Company (Chadha, 1991). The SoI is the principal mapping agency of the country.

This part emphasizes the foundational role of the Survey of India in mapping the country. Established in 1767, the SoI not only conducted surveys for territory consolidation but evolved into the leading mapping institution of India, aiding in the development of both scientific and practical applications of surveying across various domains.

Consider the Survey of India as the national archive for land information, similar to how the Smithsonian preserves artifacts. Just as the Smithsonian documents American history, the SoI documents and maps the geographical and territorial history of India.

From the 19th century, the use of trigonometric method marked a historic moment in the process of surveying... resulting in the techniques today which are fully automated and software based from data collection to analysis to mapping.

In this chunk, we learn how the adoption of trigonometric methods in the 19th century revolutionized surveying. This mathematical approach allowed surveyors to make precise geographical calculations, leading to the development of high-accuracy maps and laying a foundation for modern surveying techniques, which now benefit from automation and digital technology.

Just like how smartphones changed the way we communicate and interact with the world, trigonometric techniques transformed surveying. They made it possible to gather and process data more effectively, making surveying more precise and efficient as well.

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