Foreword

The Central Board in collaboration with State Pollution Control Boards are monitoring the Indian Aquatic Resources under various programmes since 1977. The monitoring programme started with merely 17 monitoring stations on the Yamuna and expanded steadily over the years. By the year 1985, the monitoring new spreaded over 200 stations covering almost al l the major and a few medium .rivers. A sizable amount of digital information i,e being generated every year. Management of such large volume of data manually widens the gap been data generation and data interpretation. For proper management of data and timely publication of results, the need for computerisation of the data is realised. .
As the first step towards computerisation of after quality data, an effort is made to process the data collected upto December, 1984 under Global Environmental Monitoring Systems (GEMS). The present ducument, the first under the Monituring of Indian National Aquatic Resources Series