The stream springs in the southern part of Jajinci and generally flows into the northwest direction, forming the boundary between the municipalities of Rakovica and Voždovaca for the most of its course. Water spring Kladenac is located in the lower section of the valley. The Lipica creek, flowing from the Mala Utrina area, is the right, and largest tributary. Both streams have torrential water levels. The Jelezovac itself flows into the Kaljavi Potok, at the
Messer Tehnogas complex. Kaljavi Potok, in turn, continues to the west for and flows into the
Topčiderka. This final section is completely regulated and conducted underground. The valley is divided into the Upper Jelezovac (
Gornji Jelezovac, altitude of ) and Lower Jelezovac (
Donji Jelezovac, ). Upper section occupies the area around the source of the stream, close to the
Rakovički Creek and Mali Zabran locality, while the lower encompasses the central section and the area around the creek's mouth. == Characteristics ==