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  • Systematic Hydrogeological Surveys

  • Reappraisal Hydrogeological Surveys

  • Groundwater Exploration

  • Regional Office Data Centre (RODC)

  • Regional Chemical Laboratories

  • Special Studies and Projects

  •      - Groundwater Surveys in Rajasthan and Gujarat
         - Narmada River Basin Project
         - Artificial Recharge Studies
         - Conjunctive Use Studies
         - Coastal Hydrogeology
         - Groundwater Modelling Studies
  • Groundwater Resource Evaluation

  • Assistance to State Government and Other Agencies

  • Central Ground Water Authority

  • Entire area of 1.96 lakh sq. km falling under the jurisdiction of the regional office covering the State of Gujarat and U.T. of Daman and Diu has already been covered under Systematic hydrogeological surveys. These studies have provided first hand information regarding the nature and extent of aquifers, quality of groundwater, availability of groundwater resources and development aspects. The studies provided a first level data base for the State agencies to take up groundwater development on scientific basis.

    The reappraisal hydrogeological surveys now renamed as Integrated Ground Water Management Studies are taken up every 3-5 years in a given area to understand the changes in groundwater regime over the years. These studies provide an essential scientific base for assessing groundwater development scenario to take appropriate conservation measures, wherever required. Until March 2003, an area of about 1.45 lakh sq. km had been reappraised. The priority is being given to drought prone, over exploited/critical areas and tribal areas.

    Extensive groundwater exploration has been carried out to identify the groundwater worthy areas and to understand the nature and extent of aquifers, their hydraulic and hydro-chemical properties, yield capabilities, etc. Aquifer parameters are determined through controlled pumping tests in the well fields, constructed for this purpose.
    Exploration for groundwater in Gujarat State commenced in early fifties (1954) when large areas in Kachchh, North Gujarat and Coastal Saurashtra were explored by the CGWB (then ETO). Deep drilling has been carried down to a maximum depth of 620 m in North Gujarat. Since then, extensive exploration has been carried out in the alluvial-sedimentary areas of North Gujarat, Kachchh, Saurashtra and South Gujarat regions under various programmes.
    Exploratory drilling programmes have also been taken up in hard rock areas of Saurashtra, South Gujarat and North Gujarat with maximum drilling depth of 600m. Groundwater exploration has been completed in Shetrunji River basin, Ambika-Purna-Mindhola River basins, Bhadar River basin and parts of Ozat River basin. About 1200 boreholes have been drilled in different parts of Gujarat. Apart from these exploratory wells, more than 250 production wells have also been constructed for the state government and other user agencies. Successful exploratory wells are handed over to the state government at a nominal cost on no- profit basis.
    Extensive exploration by CGWB helped the state to take up large-scale groundwater development for agriculture production and drinking water supply specially during spells of droughts/scarcity.
    Special Studies and Projects
    Besides, the normal surveys and exploration, following projects and special studies have been completed.

    This project (1971-74) was taken up with UNDP assistance to evaluate the groundwater development potential in arid and semi-arid part of western Rajasthan and North Gujarat. Under this project, studies were carried out in 11,500 sq. km area in semi-arid North Gujarat plains lying between Banas and Sabarmati rivers. Multi-layered aquifer system down to 600m was deciphered, by extensive studies including test drilling. Groundwater resources and development potential were evaluated. A mathematical model was prepared to elaborate and support the recommendations.
    The study indicated availability of surplus groundwater resources in western and south western parts and that the first confined aquifer was over exploited. Studies for artificial recharge and reduction in groundwater draft were suggested as remedial measures.

    Under this project (1971-75) extensive groundwater exploration in about 3200 sq. km area in the outfall area of Narmada Basin falling in the districts of Vadodara and Bharuch of Gujarat State was carried out. The studies revealed that the groundwater development has reached a stage where further strain on the system may result in salinity ingress near the coast.

    During the year 1980 to 1985 a Pilot Project on artificial recharge of groundwater was taken up with UNDP assistance in Mahesana district in North Gujarat and coastal area of Saurashtra near Veraval. These studies established technical feasibility and economic viability of artificial recharge of groundwater in over-exploited aquifers using various techniques.

    Prominent Schemes completed by WCR
  • Pilot project study under UNDP, Mahesana & Coastal Saurashtra

  •          Recharge through Injection well and storm water basin
  • Gujarat High Court, Sola, Ahmedabad

  •          Recharge through Injection wells
  • Physical Research Laboratory (PRL)

  •          Recharge through Injection wells
  • IIFCO Colony (Kasturinagar), Sertha Village, Gandhinagar

  •          Recharge through Trench and Injection Well
  • Indraprastha Nagar (New Dudhai), Kachchh District

  •          Roof Top Rainwater harvesting

    Technical Assistance Provided
  • INS Valsura, Jamnagar

  • CRPF, Gandhinagar

  • Army Contonment, Gandhinagar

  • Ahmedabad Urban Development Authority (AUDA)

  • Gujarat Vidhyapith, Ahmedabad

  • North Gujarat University, Patan
  •   Top

    Studies on conjunctive use of surface water and groundwater were carried out in the Mah i-Kadana Irrigation Project during 1990-1993. These studies included quantification of available surface water and groundwater resources within the command, present and projected demand for water in 2015 AD from different sectors, matching the demand with availability and to evolve the most suitable and techno-economically feasible strategy for opertionalising the conjunctive use plan. A groundwater flow model was developed to generate various scenarios.

    Surveys were undertaken in coastal belt of Saurashtra to determine the cause and effect relationship of salinity vis-a-vis pumping of groundwater in the coastal Miliolite limestone aquifers. The study revealed that the limited outflows to the sea and the use and reuse of the limited groundwater available in the coastal aquifer and extensive use of chemical fertilisers has lead to mineralisation leading to increase in salinity of groundwater. It was also found that the coastal depressions (Gheds) have salinity mostly on account of their topographic situation below the mean sea level and the prevailing hydraulic gradients.

    A number of groundwater modelling studies to simulate real-time field conditions and to generate future scenarios have been carried out. Studies for the first time were carried out under UNDP project when a regional model for North Gujarat area was developed. During project on Artificial Recharge studies, a radial flow model for Kamliwara, an analog model for Visnagar-Vijapur area and a regional flow model for Veraval coastal area were developed. A groundwater flow model for Mahi Right Bank Canal Command area was developed during studies on Conjunctive Use of Surface and Ground Water in Mahi-Kadana Irrigation Project. A regional model was also developed for Indira Gandhi Nahar Pariyojana (IGNP-stage I), Rajasthan. Preliminary Groundwater model has been developed for the Anjar-Khedoi area in Kachchh district.

    The groundwater has played a major role in green revolution of India. Therefore, it becomes essential to have reasonably accurate estimation of availability of groundwater resources. The availability of groundwater and its present level of development in Gujarat are being assessed jointly by the CGWB and the GWRDC. The resources for the Gujarat State have been computed for the year 1984 and 1991. In view of the additional information generated, further refinements in the estimates have been carried out for the year 1997 by a committee constituted by the Government of Gujarat, where CGWB is a member. The report has been issued in October 1999.

    Drinking Water Sector
    Scientific source finding work using multi-disciplinary approach was taken up in 440 hard core problem villages in Kachchh, Jamnagar, Valsad and Dangs districts under Rajiv Gandhi National Drinking Water Mission. Scientific solutions for assured and sustainable drinking water supply were provided. A number of exploratory wells were constructed and handed over to State Government to augment the water supply to water scarce areas.
    The Central Ground Water Board has been providing technical assistance to the state government departments in mitigating water supply problems during drought periods. During the extended drought period of 1985-88, assistance was rendered for drinking water supply solutions for urban as well as rural areas. The drilling rigs and crew were deployed for speedy implementation of water supply works. As a drought amelioration measure, hydrogeological surveys were carried out at 62 sites in Jamnagar district during 1999-2000. During the earthquake relief programme in Kachchh district a total of 55 production wells have been constructed for assisting in the restoration of affected drinking water supplies. In addition 80 wells have been constructed under Accelerated exploratory drilling programme during Jan.2001 till March 2002 for assisting the state in the drinking water supply programme. Apart from the above, more than 170 short-term water supply investigations have been carried out for different government and semi-government agencies including defence establishments.

    Mining Sector
    Intensive hydrogeological studies were taken up in Panandhro lignite field in western Kachchh and appropriate solutions were recommended to control the artesian pressure of aquifers occurring below the lignite bearing horizons for safe mining of lignite. Detailed hydrogeological studies and exploration were also carried out in lignite areas in Surat and Bhavnagar districts.

    Power Sector
    Special groundwater studies and exploration were undertaken to assess the groundwater resources to meet the water requirements of KLTPS of GEB in western Kachchh. Feasibility of constructing high yielding wells in the area for water supply to the power plant on sustainable basis was established.

    The Central Ground Water Board has been constituted as an Authority under sub-section (3) of the section 3A of Environment (protection) Act 1986 for the purpose of regulation and control groundwater management and development in the country. The regional offices of CGWB are taking up special investigations for demarcation of areas having depleted and polluted groundwater and are providing the technical data in order to achieve the mandate of CGWA. The Union Territory of Diu has already been notified as critical area and further groundwater development in Diu has been restricted. All the groundwater withdrawal structures in Diu have been registered. In Gujarat in the Gandhinagar taluka deep aquifers beyond the depth of 200 m bgl has been notified and ground water withdrawal from this aquifer has been restricted for drinking water purpose only. Registration of agencies involved in water well construction and production of mineral water is continuing. Mass awareness programmes for conservation and management of ground water resources are being conducted periodically ..........more