This study is oriented towards the analysis, evaluation and appreciation of the hydrological regime of the surface waters in the Orhei National Park. The hydrographic network of Orhei National Park is well developed, comprising 124 rivers and streams with a total length of 257.5 km. The two main hydrographic basins include the Moța, right tributary of the Răut and Teleșeuca, left tributary of the Ichel river, along with the upper and middle course of the Vatici river, right tributary of the Răut. Most of the rivers in the area have lengths between 1 and 10 km and only 6 have lengths greater than 10 km. The assessment of water resources is based on the data from the Jeloboc hydrological station, in operation since 1958, part of the monitoring network of the State Hydrometeorological Service. The average annual flow of the Răut River in this sector is 10.44 m3/s in the period 1958-2010, with a slight decrease in the flow. There are 26 water reservoirs in the Orhei National Park, most of which are small, man-made ponds, built for various purposes, such as river flow regulation, flood protection, fish farming and others.