The main objective of the project is to strengthen the resilience of mountain forest ecosystems to the threats of climate change by implementing, by the end of 2028, comprehensive retention and anti-erosion measures aimed at preventing or minimizing the negative effects of natural climate phenomena/processes such as droughts and fires, floods and flooding, intense or prolonged precipitation, extreme water flows in troughs, surface run-offs, destructive effects of floodwaters. The project is a continuation of activities from the OPIE 2007-2013 and 2014-2020. The main objective will be achieved through the following specific objectives: 1. Development of small retention systems through the execution of facilities and complex water collection tasks by the end of 2028. 2. Development of systems related to counteracting excessive run-off causing excessive water erosion in mountain areas through the construction of facilities by the end of 2028. The project also sets additional objectives related to educational activities and monitoring: 1. Increased knowledge on the impact of small water retention on the environment by developing an impact assessment methodology based on environmental monitoring of selected tasks until 2028. Increase the effectiveness of climate change adaptation measures by developing good practices for the implementation of retention measures by the end of 2028. 3. Raising the environmental awareness of the society through the implementation of educational events for at least 500 participants by the end of 2028. Investment tasks will be carried out in mountainous and sub-mountainous areas in the south of the country, in area 4 of the RDLP in 42 forest districts. Info-promo and educational activities will focus on various means of knowledge transfer concerning, among others, climate change and adaptation of forests and forestry to them, threats resulting from these changes and possibilities of counteracting them, hydrogen habitats, protection of water resources, development of small retention. This is an extremely important scope, thanks to which society will see the need to combat climate change and take care of nature and the environment. In this respect, the Beneficiary will be supported by Partners with extensive knowledge and experience in the field of retention. Thanks to the environmental monitoring planned in the Project in cooperation with universities, it will be possible to professionally assess the natural effects as well as the changes in water resources as part of the adaptation tasks carried out in the Project. On the other hand, support for the organization of the Wetland Protection Center will enable the development of the best solutions for the implementation of adaptation tasks, especially in the field of wetland protection, on the basis of investment monitoring. Such activities with such a comprehensive and scientific approach were not implemented in previous editions of the Project and constitute an important element of the Project. The project was implemented in three stages: Stage I – preparation of the Project – work on the concept of the Project, preparation of strategic and application documents. However, this stage includes the main tasks already carried out (conducting the SEA, elaborating the Feasibility Study) will continue after the submission of the WoD in terms of, among others, fine-tuning internal procedures defining the rules for the implementation of the Project. Stage II – Project implementation – preparation of the investment for implementation, including, inter alia: works related to the preparation of tender and design documentation, obtaining a set of permits and decisions; implementation of the investment – execution of construction works with obtaining PnU, if applicable; submission of payment requests; info-ferry and educational activities; investment and environmental monitoring. Stage III – final settlement of the Project - submission of the final WoP, closure and operational phase after completion.