In general, the effects of solid flow on hydrographical basin can be divided into positive andnegative, negative ones with the highest weight. The most important adverse effects of solid flow from theagricultural point of view are: changing or diminishing physical and chemical properties of soils;agricultural production decreased in proportion to worsening soil properties, increased droughts byreducing water retention on slopes and quantitative growth of surface runoff; temporary or permanentremoval from agricultural circuit of large areas of land affected by erosion and other degradationprocesses; difficulties in the operation of irrigation and drainage systems due to clogging of channels andpipe network. environment pollution because through erosion on slopes much of the chemical fertilizersused in agriculture are wash and accumulate in low areas or entering into groundwater and surfacewaters; increased occurrence of flash floods, favoring the occurrence of landslides. Soil erosion is anatural phenomenon that cannot be stopped completely, but controlled by a series of structural and non-structural measures, this paper aims to explore the possibilities of reducing the volume of solid flow froma hydrographical basin. By arranging ravines and torrents seeking to enforce a set of measures forregulating runoff on slopes and drainage network, in order to restore the whole area of catchment toeconomic use and erosion control categories, to remove the damage caused by floods. Currently, no yetexist a mathematical model of soil hydric erosion approaching as much by physical phenomenon of sloperunoff and solid particles entrainment by water currents, upon which to realize the fundamental physicalhydrological model of hydrographical basin. In this paper, for solid flow modeling in a catchment, is usedthe WEPP program. Based on the obtained results was analyzed the efficiency of solid flow controlworks, particularly for the cross dam with small height.

hydrographical basin, soil erosion, solid flow, control.

Presentation: oral