Neretva

Overview

The Neretva is the defining river of Herzegovina — 230 kilometres long, flowing from the Dinaric Alps near Gacko in the south-east, north through Konjic, southwest through Mostar, and finally emptying into the Adriatic at Ploče in Croatia. Its striking emerald-to-turquoise colour is the result of karst dissolution: the water picks up calcium carbonate as it flows through the porous limestone bedrock, producing the same mineral-rich signature that also feeds the Kravica and Jablanica cascades.

Source to sea: the Neretva rises at over 1,100 metres altitude as a small mountain stream. By the time it reaches Konjic it has carved a steep canyon through the Prenj and Bjelašnica massifs — one of the most dramatic mountain-river landscapes in the western Balkans. The river widens at Jablaničko Lake (a 30-km artificial reservoir built in 1953), then exits the mountains at Mostar where it passes under Stari Most, and finally spreads into the delta around Čapljina before crossing into Croatia.

White-water rafting: the stretch between Konjic and Jablanica (about 25 km) is the region's main commercial rafting route. Rapids range from Class II to Class III in most seasons; spring runoff can push some sections to Class IV. Half-day and full-day trips run from April through October. Water temperature stays cold — 10–15°C year-round — even in August.

Historical weight: the Battle of the Neretva in 1943 — a Yugoslav Partisan operation to rescue wounded fighters across a collapsed bridge — is one of the most significant engagements of WWII in the Balkans. The site at Jablanica has a museum and the reconstructed remnants of the destroyed bridge. Further downstream, Stari Most in Mostar is the river's most famous crossing and UNESCO World Heritage symbol.

In Mostar itself, the Neretva is the visual centrepiece of the old town. Swimming is technically possible but the water is cold year-round and the current can be strong. The traditional Stari Most diving competition (every July) sees local men jump 24 metres from the bridge into the river — a centuries-old practice.

For travellers on our tours: the Sarajevo tour drives alongside the upper Neretva for 90 minutes — through Konjic and the Jablanica canyon — on the way to Mostar. Our full-day Mostar tour includes walking views of the river at Stari Most and crosses its tributary (the Buna) at Blagaj. Dedicated rafting trips from Konjic are not on our current tour menu but can be arranged as a Mostar Private Driver extension.

Practical notes: the river is clean enough to drink from in the upper sections; around Mostar and downstream it's best used only for rafting/swimming. Water colour varies seasonally — most intense turquoise in late spring and early summer when mountain runoff is high.

Where is it?

Neretva is in Mostar. See our Mostar travel guide for more in the area.