Case study: Dual reservoir function, New York

Description of the application

Due to climate change, in most parts of the world, drought and flood events are going to be more frequent and to affect regions which were initially only impacted by one of these hazards. In New York, USA, a study has been launched to adapt the water supply reservoirs for a dual use as flood control facilities. To adapt the reservoirs, the dams’ infrastructure and their operation needed to be adapted. In particular, releases of water should be made in order to maintain a void in the reservoirs. An increased flexibility will be required in order to best adapt the reservoir levels to the seasonal demand and to expected or unexpected weather events.

Lessons learned

In this context, the dual use of reservoirs for water supply and flood protection is relevant. This needs, however, appropriate design and management. In fact, the structure needs to be able to adapt quickly to low and high water levels, and the management shall target optimum water volume to be stored for each period of the year.

Implementation cost

Estimated financial cost for the implementation of the measures, given as a cost range.

Flood management measure

Which flood management measures have been applied? Multiple measures may be specified.

Project

Projects from which information has been harvested. Multiple projects may be specified.

Country

Country in which the application (case study) is located. In case of a transboundary application multiple countries are specified.

Responsible authority level

Level of Responsible Authority.

Last modified: Sept. 12, 2016, 8:44 a.m.