Ol Arabel (or Olarabel) is a river in the Great Rift Valley of Kenya that feeds Lake Baringo.

[4] In the 1940s squatters moved into the Ol Arabel Forest Reserve in Laikipia District and cultivated 84 acres of land, eventually being evicted in 1947.

[5] In the 1970s the government operated a settlement scheme in Ol Arabel, but later attempted to convert the land back to forest.

In the past ten years Lake Baringo had been silting up and shrinking in area due to increased agriculture and reduced forest cover in its watershed, with economically important fish stocks dropping significantly.

[10] In September 2011 an officer of the Green Belt movement said the Ol Arabel forest was almost extinct due to illegal loggers and particularly to charcoal burners.