The Rakuljšica and some smaller creeks, tributaries of the Reka River, run on the southern edge of the basin, below Sajevče.
The natural and social influences of continental and littoral Slovenia intertwine in the Pivka Basin.
After the stabilisation of Austria's land borders, Pivka administratively belonged to Carniola, and ecclesiastically, except for short interruptions, to the Diocese of Trieste.
From 1918 to 1943, it belonged to Italy (the Trieste Province), and after World War II to Yugoslavia, where it was part of Slovenia.
The location of villages was mainly determined by the agricultural orientation of the population because the settlements are connected to land that can be farmed.
When the level of karst water, which is always close below the surface, rises, the Pivka starts to flood near Zagorje.
The slopes are mostly covered by forest, primarily intentionally planted Austrian pine, spruce, and larch.