For each city with a unique natural basis, the connection with the water space determines the historical process and patterns of development, structure and architectural appearance, cultural traditions and way of life, typology and status of urban spaces. An important component of comfortable living conditions in cities is the harmonious coexistence of urban environment with nature: river arteries, green parks, neighborhoods of birds, animals, and waterfowl feed cities with natural energy, balance anthropogenic impact, and neutralize smoke, pollution, car noise. But in the face of powerful growing urbanization, the degradation of the natural component is a sad reality. The natural features of the river mountain ecosystems of the Carpathians are considered. The Carpathians have the highest density of river networks - in this relatively small area, there are about 28 thousand rivers, streams, and streams. The river with its coastal territory, floodplain, coastal meadows, fields, forests is a whole harmoniously connected ecological system - the degradation of one component leads to an imbalance, to the violation of natural ties, to the loss of the integrity of the ecosystem. It is important to preserve the floodplain, which is a natural protection zone for the river, ecotones, and river biocenosis. It is possible to improve the condition of rivers and preserve biodiversity only if balanced management is implemented throughout the river's catchment area. Mountain and foothill regions of the Carpathians are distinguished by the highest specific weight of forests and shrubs in Ukraine (56.1% of the territory) and the lowest agricultural development (36.4%) and plowed land (17%). Carpathian rivers are regulated by dams due to frequent floods - the total rise of water reaches 5 m or more; the width of the dam space is 200-300 m. The lack of a convenient network of tourist trails along the picturesque Carpathian rivers and streams, bicycle paths, trails for horseback riding, and the improvement of ecological promenade routes limits tourists to visit and have a comfortable rest in this beautiful region of Ukraine. The experience of foreign specialists in the urban planning organization of the coastal areas of mountain rivers proves the importance of a harmonious combination of the natural component with the comfort of the improvement of the coastal zone. The following examples prove the possibility of creating a comfortable coastal environment in difficult mountain conditions, while maintaining the natural balance of the river ecosystem. The landscaping of the coastal areas of mountain rivers in the Czech Republic, Switzerland, and Japan was analyzed. Proposals regarding the urban planning organization of the coastal territories of the mountain river ecosystems of the Carpathians are presented.

The characteristics and problems of coastal water areas and coastal territories are considered. The use of coastal areas for economic, residential, and industrial buildings led to their degradation and gave rise to a number of legal, ecological, technical, and urban planning problems. Coastal water areas and territories are important natural and urban planning complexes in the planning structure of the city, because they enrich the urban fabric with public and recreational space, coastal flora and fauna, a picturesque landscape, and improve the microclimate of the urban environment. Professional organization, beautification, preservation and protection of coastal water areas and their coastal territories is one of the dominant urban planning tasks due to the fact that coastal territories are extremely vulnerable, the most exploited and investment-attractive zones. Preservation of the natural balance between the water area and the coastal area in the conditions of an urbanized environment is an urgent task of city planners. The advantages of the organization of the coastal man-made system have been proven. The urban planning organization of the coastal territory of the river is a set of measures for engineering preparation and improvement of the territory, which include the definition and measurements of the site, the identification of its natural features, the determination of the borders of the coastal territory, zoning with the definition of restrictions (water protection zone, coastal protective strip, green lines), project development, technical support of architectural and landscape improvement under the condition of maintaining and preserving the natural balance of the river ecosystem. The importance of establishing the Blue Lines of urban planning restrictions of coastal water areas is substantiated. Green and Blue lines should become tools for limiting the urbanized load on the natural component of cities and settlements, protecting and safeguarding the purity of the water body, the balance of the ecotone component, the river biocenosis, and the paradynamic connections of the river ecosystem during its urban development. The blue lines of urban planning restrictions – the boundaries of the water area cut – will contribute to the preservation of the maximum allowable sizes of coastal water areas, a tool for preserving the natural component in the urbanized environment, which will help solve the problem of balanced, rational and harmonious use of coastal water areas and territories. In addition to the obvious advantages of improving the microclimate of the urban environment, the appearance of recreational and pedestrian zones, the organization of public space (city friendly for people), the return of historical and cultural significance, professional urban planning organization and the revitalization of river ecosystems will have long-term economic profit – the coastal areas of revived water areas will become promising objects for investments.

The world experience of revitalization of coastal areas is considered. Vivid examples of revitalization for the citizens of coastal areas are "Hafen City" in Hamburg, "VКstra Namnen" in MalmЪ, "Fjord City" in Oslo, "Canary Wharf" in London. Until the beginning of the 21st century, people were not often seen on the banks of the Yonning River in the Chinese city of Taizhou because the embankment was a concrete road without trees. A 2002 project to create a park along the river was a successful solution to flood control and stormwater management. The effectiveness of such a system was proven by the simulation of regular floods. A wooden structure was added to the natural structure, which performs a technical function, where pedestrian routes were laid. Today, the park is a popular place for residents throughout the year, because the wetland system with pontoon paths is not at risk of flooding due to rising water levels. 3.8 hectares of public space were returned to the residents of Lisbon by building the Museum of Art, Architecture and Technology, and the area on the site of the former road and car park opened access to the Tagus River. It is possible to make the embankment active and accessible by leaving concrete anti-flood structures, as was done on the boulevard along the Vistula in Warsaw. The embankment, which before the reconstruction was not a public space, has become one of the most popular promenade spots in Warsaw after 2017. Domino Park on the waterfront of New York is an example of how a comfortable public space can be built in the context of an industrial area. In many American cities, the revitalization of coastal areas is accompanied by the organization of festival market places in the style of European cities with a predominance of local small shops, unpretentious architecture and the creation of a festive atmosphere. It was concluded that complex projects of embankment regeneration involve the construction of new offices and housing, certain tourist attractions - concert halls, museums, walking paths, restaurants and cafes. It is emphasized that the location of the headquarters of large corporations and educational institutions on the coastal territories is an important factor in the further development of such areas. The given examples of revitalization of coastal areas in different parts of the world prove that the creation of public spaces that are optimal in terms of comfort, safety, and aesthetics is the basis of urban planning organization of coastal areas. Attracting investments in the revitalization of coastal areas contributes to solving a number of environmental issues, the aesthetic quality of the urban environment, and the humanization of society.

The current state of ecosystems of rivers of Ukraine - their natural features and consequences of powerful anthropogenic activity are analyzed. The problem of coastal areas of rivers and reservoirs is considered. Methods of rehabilitation of the cascade of Dnieper reservoirs and their coastal territories are determined. Extensive farming with the destruction of coastal lands up to 80-90% is one of the main factors in the ecological crisis of river ecosystems. The floodplains of most small rivers of Polissya are developed for agricultural lands by almost 50-60%, Forest-steppe and Steppe - by 70-90%. Nevertheless, the efficiency of agricultural land use in Ukraine is lower than in Europe and developed countries. Agricultural fields are located on the slopes and floodplains of rivers, so the erosion of coastal areas has reached unprecedented proportions. The creation of the Dnieper reservoirs has created a number of environmental problems, led to a sharp change in the basis of local erosion. One third of their total length is actively destroyed by wind waves and denudation processes, runoff and other types of currents. The area of land lost as a result of the destruction of the shores is already about 6.5 thousand hectares. The destruction of the cascade shores annually leads to the loss of a significant amount of coastal land, affects the use of the shores and adjacent areas, causes emergencies, accidents and catastrophes, especially in settlements where the negative impact of natural factors is exacerbated by man-made factors. The condition of the coastal area directly affects the condition of the water area. Urban planning of coastal areas should help preserve and maintain the natural balance of the river ecological system - the establishment of restrictive "green lines" and water protection zones, shore protection, creation of recreation areas and their improvement, paving tourist routes, restricting protected areas and more. These urban planning measures should take into account the zonal features of rivers and take into account the uniqueness of each river ecosystem in Ukraine.

The extremely important issue of today is the return of coastal areas to city dwellers. The peculiarities of urban, landscape and integrated directions of organization of coastal territories are considered with the definition of their advantages and disadvantages. Bright examples of all three principles of coastal development are given. The basic town-planning methods of the organization of coastal territories are defined. The focus is on the urgency of reviving natural ecosystems in cities by revitalizing urban rivers with the return of rivers to their natural qualities - natural bed, flora, fauna, ecotones, which will improve the atmosphere of the urban environment, microclimate, create recreation areas for citizens. The most striking example of successful revitalization project is the revival of the Chongecheong River in Seoul (South Korea). The creation of Pochayna Park in the Obolonskyi district of Kyiv with the revival of the small Pochayna River by Kyiv designers and architects in partnership with Korean colleagues was presented. The creation of public spaces in coastal areas is a condition for improving the quality of life of urban residents. Concern for the human dimension in cities is at the heart of these projects. The realized project on revival of the small river Yahorlyk in Odesa region is given. Revitalization of the small river Yahorlyk launched a campaign to revive Ukrainian rivers.