Hydrology, as a scientific discipline, plays a pivotal role in the management of water resources, particularly in coastal regions where hydrological systems are often subjected to significant anthropogenic and environmental pressures. The coastal watersheds of Cameroon, notably those of the Sanaga, Wouri, and Nyong rivers, are characterized by a diversity of hydrological regimes influenced by various climatic and geographical factors. However, the existing data on these systems remain incomplete and frequently unreliable. Enhancing our hydrological understanding of these watersheds is essential for optimizing water resource management and mitigating risks associated with flooding, coastal erosion, and pollution. In response to this pressing situation, AQUAMEN has made the strategic decision to address the growing challenges related to integrated water resource management by developing a denser and more systematic hydrological data collection network. This initiative will involve the installation of hydrometric and rain-gauge stations, alongside the implementation of remote sensing systems that facilitate continuous, real-time observation of hydrological parameters. Furthermore, hydrological modeling will serve as a valuable tool for simulating watershed behavior in response to various climatic and anthropogenic conditions. The application of region-specific numerical models for the coastal area of Cameroon will allow for anticipatory assessments of the impacts of climate variability and land use changes on the water cycle. By integrating this modeling approach with collected field data, it will be possible to develop prospective scenarios that will inform planning interventions and the establishment of sustainable water resource management policies. AQUAMEN is also committed to adopting a participatory approach that engages local communities, decision-makers, and scientists. By raising awareness among populations about hydrological issues, we promote a collaborative development of solutions tailored to local realities. Initiatives focused on training and education regarding water management practices, combining traditional knowledge with scientific innovations, will further bolster community resilience in the face of hydrological challenges. This comprehensive strategy underscores AQUAMEN's dedication to fostering a sustainable and inclusive framework for water resource management in the coastal regions of Cameroon.