The ecological state of the small rivers basins determines water and hydrochemical regime of larger rivers and groundwater deposits. The necessary measures for a small river condition improving are identified on the assessment of ecological status of its headwater. Spatial ecological diagnostics of the small Alma River basin was conducted. Critical environmental situation in the basin’s piedmont was revealed. This territory is located in the gathering artesian basin and creates a potential environmental hazard for ground waters.

To protect irrigation intake structures from the deposition of sediments (from bottom, middle, upper layers), which can be a source of secondary water pollution, a large number of different designs of sediment interceptors have been developed. Increasing requirements for withdrawn water quality from the watercourses for irrigation and water supply, necessity of reconstruction on a large part of the previously constructed headwaters and have led to the development of an effective protective device.In the 20th century, world population has tripled from 1.6 to 6 billion people, irrigated farming area increased from 50 to 267 million hectares, and water consumption increased six-fold - from 500 to 3,500 km3 / year. The real water shortage is provoked by increased demand, associated, according to experts and international organizations, with demographic boom, change in food intake of large groups of population, industry and energy development, urbanization and popularization of biofuels. Factors that reduce available water resources include inefficient water use, water pollution and, increasingly, climate change. This issue remains very important for the Crimea and its successful resolution will become one of the foundations for the sustainable development of the peninsula.Water resources are one of the factors of sustainable development of the territories on global and regional levels. Entire hydro transport system improvement of water resources delivery to the final consumer of the Crimea (population, agriculturally used areas, industry, tourist complex, etc.) is the main strategic issue on optimization of water resources potential and sustainable development of various sectors at the socio-economic sphere.It is supplied up to 80,000 m3 / day water for drinking purposes from the Partizansky Reservoir, 215,000 Simferopol residents use water from the Partizansky Reservoir for living. Partisan reservoir is the main source of water supply for settlements in Simferopol and Bakhchisaray districts.

This article is devoted to justification of selective intake structure from reservoirs and rivers operating in winter conditions in the South of Russia, manufactured from polypropylene fabrics of various warp strength and high filtration characteristics weft used for detention of floating objects, alga, suspended sediments.

An assessment of the ecological state of the small river basin Alma of the Republic of Crimea has been carried out. Due to intensive nature management in the 20th century, the primary natural environment was transformed into a natural-engineering system (NES). The critical components of the NES are the lowland sector and surface waters basin. The flat sector turned into an agricultural landscape with a low coefficient of natural protection, it needs transformation based on landscape planning. Runoff the Alma River is almost completely regulated by reservoirs and ponds, as a result of which the channel is deprived of water for most of the year. It is proposed to restore the natural flow of the river by redistributing the reserves of the Partizansky reservoir and establishing Western European water consumption standards for Simferopol.