On the Macedonian territory, Crn Drim is 56 km long. But the river has a usual course only slightly less than one half of that length, from Struga to the village of Tashmarunishta. Leaving the village to the north, the river enters the ravine. Immediately after that, it forms a lake thanks to a dam 82 meters high located 10 km north on the other side of the lake. The dam forms the accumulation "Globocica" created by the waters of Crn Drim.
Immediately after the Globocica hydroelectric power plant, the Crn Drim waters create another lake, using a 102 m high dam near the town of Debar. This lake is the richest water artificial lake in Macedonia. The lake accumulates 520 million cubic meters of water. From the lake with the help of tunnels the water is being brought into the hydro power plant Spilje. At this moment the water capacities of the river are used up to the maximum and it represents an important hydropower potential for the Republic of Macedonia. In northern Albania, near the town of Kuks, Crn Drim again becomes a lake along with the river Bel Drim. After the flow of Bel Drim into Crn Drim, the river flows into the Adriatic Sea, under one name - Drim.