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Hydrological Survey for Irrigation and Watershed Management

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Water is essential for agriculture, but its availability varies according to rainfall, soil conditions, groundwater levels, and seasonal changes.  Farmers and project planners need reliable information about water availability to make better decisions about irrigation and land use.  A Hydrological Survey helps collect and analyse this information, supporting efficient water distribution and long-term resource planning.  By understanding how water moves across the land and through the ground, agricultural planners can identify suitable irrigation sources, reduce water wastage, and improve watershed management practices. These assessments are particularly valuable in areas where rainfall is irregular or water resources are under pressure. What Is a Hydrological Survey? A Hydrological Survey is the systematic study of water movement, distribution, availability, and behaviour within a particular area. It examines factors such as rainfall, surface runoff, groundwater conditio...

Central Ground Water Authority: CGWA NOC & Groundwater Permission

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Groundwater is an important source of water for residential, commercial, industrial, infrastructure, and other projects. When a project plans to extract groundwater, understanding the applicable approval process is essential before using a borewell or other groundwater source. The Central Ground Water Authority plays an important role in regulating groundwater extraction and related permissions in India. Depending on the project and its location, applicants may need to obtain a CGWA NOC or comply with applicable groundwater regulations. The process can involve reviewing site conditions, assessing groundwater availability, preparing technical documents, and submitting the required information through the appropriate process. Understanding these requirements early can help project owners avoid delays and make better decisions about groundwater use. What Is the Central Ground Water Authority? The Central Ground Water Authority, commonly known as CGWA, is responsible for regulating and ma...

How Satellite Data Helps Identify Flood-Prone Areas with Satellite-Based Flood Modelling

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Floods can develop quickly, but the areas most likely to be affected can often be identified in advance with the right data. Satellite imagery provides a wider view of land, water bodies, drainage patterns, terrain, and changes in surface conditions, making it useful for understanding potential flood hazards. Satellite-based flood modelling combines satellite observations with geographic, rainfall, terrain, and hydrological information to understand how water may move across a landscape. This approach supports Flood Mapping, planning, and Flood Risk Assessment for cities, infrastructure projects, agricultural areas, and vulnerable communities. What Is Satellite-Based Flood Modelling? Satellite-Based Flood Modelling uses information collected by Earth-observing satellites to study flood-prone locations and possible inundation patterns. Satellite images can show changes in water extent, land cover, vegetation, soil conditions, and drainage features over large areas. The information can ...

Reservoir Hydrological Survey and Water Resource Assessment

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Reservoirs play an important role in water storage, irrigation, drinking water supply, flood management, and industrial requirements. Understanding how water enters, moves through, and leaves a reservoir is essential for effective water resource planning. A Reservoir hydrological survey provides the technical information needed to evaluate these water-related conditions and support informed decisions for different types of projects. Hydrological assessment also considers rainfall, runoff, river flow, catchment characteristics, evaporation, and seasonal changes. When these factors are studied together, project teams can better understand the availability and behaviour of water within a reservoir system. What Is a Reservoir Hydrological Survey? A Reservoir Hydrological Survey is a systematic study of the hydrological characteristics associated with a reservoir and its surrounding catchment. The assessment generally involves collecting and analysing information related to rainfall, strea...