Perhitungan Neraca Air Waduk Didalam Penentuan Kebutuhan Air Pada Kampus 1 Politeknik Negeri Bengkalis

Adequate water availability is a crucial factor in supporting academic and operational activities in higher education institutions, including state polytechnic of bengkalis. As the number of campus facility users such as students, lecturers, and staff increases, the need for an efficient and sustainable water supply system becomes more urgent. This study aims to calculate the water balance of the Politeknik Negeri Bengkalis reservoir and analyze the adequacy of clean water for campus needs using the Thornthwaite-Mather method. A topographic survey with the closed polygon method was conducted to calculate the reservoir storage area, while rainfall and evaporation data were collected as inputs for the water balance analysis.

The calculation results indicate that the existing reservoir storage volume is insufficient to meet campus water needs optimally, especially during the dry season. Therefore, a water distribution strategy is recommended based on usage priority and monthly water availability, with GKT 1, GKT 2, GKT 3, and GKT 4 designated as the main supply priorities, while Building C receives the remaining distribution according to the available capacity after the primary needs are met.