This document summarizes the key achievements and objectives of the Hydrology Project in India across its three phases. The project aims to develop a standardized national water resources monitoring and information system to improve water resources planning and management. Key achievements of phase II included upgrading monitoring networks, developing web-based data management and tools for planning, and conducting studies on groundwater management and water quality issues. Phase III will further develop these systems nationwide and introduce tools for flood forecasting, reservoir operation, and assessing climate change impacts. The ultimate goal is to establish a permanent water resources information coordination center.