The Geological Survey is offering a funding opportunity for a Cooperative Ecosystem Studies Unit (CESU) Partner in California. The funding is for research in delivering assessments of water supplies for human and ecological needs, identifying factors that influence water availability, and understanding potential implications for future water availability. The research will focus on how socioeconomic and policy drivers interact with hydrologic and climate processes and scenarios. The goal is to provide relevant information to decision-makers in a complex and uncertain world. The research will include a hydro-economic analysis of water use for irrigated agriculture and its implications for local communities and the region's food system. The funding opportunity requires electronically submitted applications to be submitted by 5:00 p.m., ET, on the listed application due date.