NIMIS aims to establish a functional and continuous national irrigation database management system.
With the majority of land being forests and limited agricultural suitable areas, effective irrigation management is essential. Interconnected social, technical, agricultural, economic, and institutional data are continuously generated, necessitating proper documentation and digitalization.
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Farmer Managed Irrigation Systems
Nepal is renowned for its tradition of Farmer Managed Irrigation Systems (FMIS), which involve collective engagement of farmers in irrigated agricultural development. These systems, ranging from highlands to mid-hills and the Terai region, provide irrigation services to approximately 70 percent of the country's total irrigated area.

Agency Managed Irrigation Systems
An "Agency Managed Irrigation System" (AMIS) is a centralized irrigation approach where water resources are supervised and directed by a designated agency or organization, rather than individual farmers or local communities.

Ground Water Irrigation Systems
A groundwater irrigation system is a method of supplying water to crops using underground water sources, such as wells, boreholes, or tube wells. This system is widely used in areas where surface water (like rivers or lakes) is insufficient or unavailable. Groundwater irrigation systems are one of the major components of irrigation development.

Lift & Non-conventional Projects
The Non-Conventional Irrigation Technology Project (NITP) was established in 2003 to develop and promote innovative irrigation technologies beyond traditional methods, particularly in regions where conventional irrigation systems are impractical. These areas often face challenges such as steep slopes, limited water availability.