CONTENTS

中　　文

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PREFACE

Taiwan lies within the subtropical region, with the mean annual precipitation of 2,510 mm. Due to the uneven distribution both in space and time, the amount of rainfall differs greatly from one season to another, thus mostly likely leads to the occurrence of flood and drought within the same year . Subjected to the geographic characteristics of the island, rivers of Taiwan are all short and steep. Although Taiwan is abundant with rainfall, runoff flows promptly down to the ocean and is hard to store for utilization. To sufficiently supply the increasing demand of water in the future. It is entirely rely upon the overall management and planning to effectively make use of the nature water resources.

Accurate hydrological data is the key factors of water resources management and planning. The results from data collection, investigation, manipulation, analysis and verification are the basis any hydraulic project depends on while performing research, judgment, comparison, and making decisions. The first edition of "Hydrological Year Book of Taiwan, Republic of China, 1970" was published in 1972 by former Water Resources Planning Commission. The contents of which are hydrological backgrounds, daily flows, and the collecting data of suspended load. The year book is updated annually ever since. In recent years, more data, such as water quality for rivers and groundwater within the planning area, are included in the publication. Up to date, database has been set up for the use of related institutions for the distribution and exchange of information; such facility has been appreciated by all users.

In line with the innovation of water conservancy affairs, and the integration of authorities in charge of water resources management and planning. Water Resources Bureau, Ministry of Economic Affairs (MOEA) was officially established on the 2nd of December 1996, by merging Water Resources Department and Water Resources Planning Commission, MOEA. The responsibility for publishing the "Hydrological Year Book of Taiwan, Republic of China, 1995" will be carried on by the Bureau, and it will be available to all users. Any suggestions and recommendations to further improve the book will be greatly appreciated.

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Director General

October, 1995