Kudafljot is the product of confluences of several rivers discharging
large areas in the Southern part of Iceland. The main river is
Skafta discharging the glacial lake Langisjor and adding several
spring fed streams in the Laki Area, originally glacial water from
glacier tongue Sidujokull, which disappears into the permeable lava.
Then it collects rivers Tungufljot, Holmsa and the largest part of
Eldvotn, before it eventually gets the name Kudafljot a short distance
to the north of the present bridge on road # 1 to spill into the sea
on the south coast. A large branch of river Skafta continues to
the east past hamlet Kirkjubaejarklaustur, where it spreads through
the alluvial plains to the sea.