INFLUENCED FLOW IN LOWER IZA RIVER BASIN
PANDI G. , STOICA F.
ABSTRACT. Influenced flow in lower Iza River Basin. The Maramureş Depression is drained by Vişeu and Iza rivers. Both have a partially influenced regime. The flow in lower Iza Basin is influenced by the Runcu Reservoir and by the Runcu – Valea Neagră derivation that are situated on the upper Mara River. The flow is controlled by three hydrometric stations – Mara and Vadu Izei on Mara River, and Vadu Izei on Iza River. We took into analyse the time period 1993 – 2012 using drained and influenced monthly average discharge data. The variation of monthly and annual deviations for Mara Station shows positive values for each year and for almost each month. The flow influence degree, in absolute and relative values, is evaluated for all three stations. The hydrometric stations are situated into a certain type of influenced flow by using the Q infl. / Q rec. ratio.
Keywords: Natural and influenced flow, water using utility, absolute and relative deviation, flow influence degree, influenced flow type.