Interruption of longitudinal and lateral connectivity is hydromorphological condition taken into account when establishing if a water body is heavily modified or not. Dams as well as reservoirs created in the upstream represent one of the reasons of attribution to river and stream the status of heavily modified water body. Present research represents a first attempt to develop a spatial database of dams on the rivers of the North Development region of the Republic of Moldova using satellite images and geoinformational techniques. The results showed that from identified 2523 dams only 14% are partially demolished, the others are generally in satisfactory condition. In case of the dams’ upstream part, only for 49% of them reservoirs and ponds are present in good condition, those in eutrophic condition and semi-dry accumulations are of 13%, the upstream of other 30% is characterized by dry territory and 8% by wetland. Dams’ density is considered very high in case of streams, the average being 0,57 dams/ river km or about 1 dam on every 1,77 km of river, and much lower on medium rivers, being only 0,15 dams/river km or one dam is constructed on almost every 7 km of river.