Reservoir governance in world's water towers needs to anticipate multi-purpose use

We show that downstream water deficits could potentially be covered through an upstream reservoir under mean and partially under extremely low inflow conditions. However, these hydrological conditions were neglected in the governance processes. The decision-making when issuing the new reservoir concession was influenced by (a) a lack of knowledge and of an appropriate reservoir-management study, (b) an interest to increase renewable energy production, (c) a focus on environmental agreements in the participatory process, and (d) economic interests.

Our analyses provide factors, which need to be considered when designing governance processes for the management of reservoirs in world's important and vulnerable water towers. We conclude that immediate action is required toward balancing upstream and downstream water needs in governance processes.