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This paper aims to analyze the suitability of Trotus river drainage basin, for building dam lakes. At present, water demand is a rising, global issue. There are numerous studies concerning water supply in different regions, as well as solutions for areas associated with water level decrease. Numerous economical sectors imply the use of water (agriculture, industry, tourism, food industry etc), therefore the analysis of areas where potential, new, artificial dam lakes can be built, is mandatory. There are numerous factors that engineers have to take into consideration, when building a dam for an artificial lake. Some of the most important parameters are land use, geology, soil and inhabited areas. For this study, these parameters have been combined into a multi-layer based GIS analysis, in which each layer has different values corresponding to the suitability of the elements contained on that layer, to the dam building purpose. The main results reveal a classified version of a suitability report, depicting the best areas for building a dam lake, in Trotus drainage basin. After choosing the best location for a potential, new lake, several calculations have been made, regarding simulated lake surface, the time it would take to fill the lake, according to different flow rates of the chosen river, the number of households that would have to be moved / relocated because of the lake expansion, and also potential estimated costs for the household relocation process. Overall, this methodological approach is considered to be valid, taking into consideration the validation of the results, with real life dams, that have already been built in these areas.

SUITABILITY ANALYSIS FOR BUILDING DAM LAKES IN THE ORIENTAL CARPATHIAN MOUNTAINS, ROMANIA. CASE STUDY: TROTUS RIVER BASIN