ABSTRACT
Regional water problems are complex. These problems typically are concerned with a diversity of competing water uses, controlled by a variety of physical infrastructures (reservoirs, aquifers, channels, pipelines, treatment plants, etc.), and managed institutionally by a diverse range of private decision-makers (households, farms, companies) and governments (different governments and ministries at local, provincial, national, and sometimes international scales). The water uses of a region often compete over the management of water. Irrigation, urban, recreation, hydropower, flood control, and environmental uses sometimes are compatible, but more often compete. Even within only one of these sectors, different irrigated areas and farms often compete.
