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About Soil and Land Use Survey of India (SLUSI)   [Click for Activities/History]

Soil and Land Use Survey of India (SLUSI), an apex organization in the country established in 1958 deals with soil survey and land resource mapping in the country. It is a subordinate field organization under Department of Agriculture, Cooperation and Farmers Welfare , Ministry of Agriculture and Farmers Welfare.The SLUSI is a primarily engaged in conducting soil survey of different intensities in order to provide scientific database for developmental programmes encompassing soil and water conservation planning, watershed development, scientific land use planning etc. The database generation of the organization commensurate with the requirement of soil and land use information of various land-based development programmes.The organization is well equipped with Remote Sensing techniques, Geographic Information System (GIS), Image Analysis along with modern facilities of soil analysis and cartography laboratories for acquision of soil and land information and for the development and management of digitial spatial database.It operates soil survey activities from Headquarters at New Delhi through seven Centres located at Noida, Kolkata, Nagpur, Bengaluru, Hyderabad, Ahmedabad and Ranchi.

The Objective of detailed soil survey is to generate detailed infromation on soil and land characteristics of the priority area using various scales cadastral map (1:4K/8K) or large scale aerial photograpgh (1:15,000). The current using scale is 1:10000 .It deals with systematic detailed study of soils comprising morphological examination of soils in the field , analysis of soil samples in the soil laboratory and preparation of maps in the Remote Sensing & GIS Lab.In general the Detailed Soil Survey, very high and high priority subwatersheds area and rainfed are taken up to generate detailed data base on soils which are pre-requisites for formulation of village level plan.The data generated out of soil survey could be interpreted to derive base information on the use potential of land or various utilitarian purposes. It provides the following information, which are essential for any land development programme
  • Proper diagnosis of soils
  • Scientific Land Use planning
  • Soil amendments for judicious use of chemical fertilizer
  • Soil , land, water, crop and nutrient management
  • Generation of soil health cards for dissemination of soil information to farming community
  • Development of Soil Information System
  • Optimal utilization of Soil Resources ...... [Click here for Map and Reports]
  • The Objective of Soil Resource Mapping (SRM) is :
    1)To prepare Soil map on 1:50000 scale using toposheets and satellite remote sensing data
    2) To generate district based information on nature, extent and potential of soil resources
    3) To develop a methodilogy to reduce tiem and man power required for ground surveys
    4) To delineate soil mapping units using uniform legend Methodology for Soil Resource Mapping:-
    The steps involved for conducting the soil resource mapping using remote sensing technique and generation of digital database are as follows:-
  • Development of Legend
  • Preparation of Base Map
  • Delineation of Landscape/ Geological boundary
  • Delineation of Physiographic Units
  • Delineation of Slope Boundary
  • Delineation of Land use boundary
  • Pre-field Interpretation
  • Pre-field Interpretation
  • Selection of Sample Strips
  • Ground Truthing and Field Work
  • Ground Truthing and Field Work
  • Final Interpretation, Validation and Finalisation of Maps ........ [Click here for Map and Reports]
  • The Objective of Rapid Reconnaissance Survey (RRS) is to demarcate and identify priority watershed in the catchmnert area on 1:50K scale.It provides information on physiography,slope, soil depth, surface texture, land use ,land cover, surface condition and existing management practices.It deals with identification and demarcation of very high and high priority subwatersheds in catchment on 1:50K scale based on sediment yield/run-off potential index. SLUSI developed a methodology for prioritization of subwatersheds in the catchment areas to facilitate planning of soil and water conservation in a selective mode ad phased manner. The output of the survey is utilised both by Central and State Governments towards formulation of soil and water conservation working plan.
    It provides the following information, which could be beneficial to the planning purpose:-
  • Development of priority watershed to check sedimentation of dams/reservoirs, to enhance agriculture production and to restore fragile Eco-system
  • Generation of thematic maps of each and every soil and land attributes of erosion intensity mapping unit that provide broad level soil and land characteristics of the catchment area.The soil information on soil and land could be utilized to prioritize the watersheds based on the objectives of any schemes
  • Each erosion intensity mapping unit is associated with natural habitat and could be considered as distinct Eco-unit for developmental planning purposes
  • The database could be utilize for non-agricultural application purposes viz. road and sewer line construction,selection of site suitable for disposal of waste, etc.
    [Click here for Map and Reports]
  • The objective is to identifying and recognizing each micro watershed (Scale:1:50,000)in the country with distinct spatial extent and Unique National Code
    ‘Micro-Watershed Atlas of India’ on 1:50,000 scale will be an important digital database for planning and monitoring of development programmes being implemented in the country on watershed basis. This will provide the Distinct Spatial Extent and Unique National Code to every micro-watershed of the country. Similarly, a systematic and scientific delineation along with its hierarchical alpha-numeric codification is useful for watershed management programs at village levels. The average size of micro-watershed is 500 to 1500 ha considered best for the government programs. It will serve as a uniform baseline for developing hydrologic unit based data bank to be used for water resources management. Runoff, sedimentation, water balance, and several other catchment characterizations related studies on microwatershed basis. It helps in ensuring uniformity in the use of microwatershed code across the nation in the soil and water conservation and management programs. The spatial micro-watershed atlas of India developed with 51490 sub-watersheds and 320628 Micro-watersheds. Each one is having distinct spatial extent with unique national code helps to avoid duplication of activities with similar objectives under different ministries in one microwatershed. These hydrological unit boundaries with codes can be used by various organisations involved in development activities related to integrated development of water resources and management on watershed basis.
    The hydrological unit boundaries with unique codes up to micro-watersheds can be downloaded from on free of cost.
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