SMALL WATER RESERVOIRS – SOURCES OF WATER OR PROBLEMS?

Anna Bandlerová,Klaudia Halászová,Dušan Húska,Ľuboš Jurik

doi:10.12911/22998993/59343

Abstract

SMALL WATER RESERVOIRS – SOURCES OF WATER OR PROBLEMS?

Highlights

The history of building water reservoirs is connected with the beginning of the intensive contribution of human beings to environment and regulation of water conditions
New changes in the society, the use of irrigation as well as common European policy and its enforcement have an impact on the usage and operation of small water reservoirs in Slovakia
Water reservoirs used to serve as a positive intensive element of land utilization became a source of financial problems and environmental burdens nowadays

Summary

INTRODUCTION

The history of building water reservoirs is connected with the beginning of the intensive contribution of human beings to environment and regulation of water conditions. Accumulation of sediments reduces the real volume of water, creating shallow zones with overheated water and intensive growth of algae and later the growth of higher wetland plants This leads to the loss of surface area and a decrease of the protective function against floods. Small water reservoirs are typical for local source of water and their importance will increase in the future. The solution might be either the elimination of discontinuities and replacement of barriers and taking all possible measures or to construct fish passes This is the core problem of small water reservoirs. It is a very slow natural process of gradual transformation of originally oligotrophic to eutrophic lakes It is manifested by a progressive accumulation of sediments of dead aquatic organisms and changes in the chemical composition of water. Sediments significantly contribute to fouling reservoirs and to the reduction of the useful volume of the water reservoirs

A CONTRADICTORY OPINION TO THE ACTUAL SOURCE OR WATER SUPPLY PROBLEMS

Findings

CONCLUSION