DIRECTIVE 2000/60/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 October 2000 establishing a framework for Community action in the field of water policy (OJ L of 22 December 2000)
5. River basin management plans may be supplemented by the production of more detailed programs and management plans for sub-basin, sector, issue, or water type, to deal with particular aspects of water management. Implementation of these measures shall not exempt Member States from any of their obligations under the rest of this Directive.
The Water Law Act of 20 July 2017 (Journal of Laws of 2017, item 1566)
Protection against drought is the task of the government and local government administration authority and Polish Waters.
1. The draft plan to prevent the effects od drought is prepared by Polish Waters in agreement with the minister competent for agriculture, minister competent for rural development, minister competent for fisheries, minister competent for inland waterways issues and voivods, including division of the country into river basins.
6. The minister competent for water management shall adopt and update a plan to prevent the effects od drought, by way of a regulation, guided by the need to counteract the effects of drought.