It stretches from Nahal Taninim, a stream marking the southern end of Mount Carmel in the north, to the Yarkon River in the south, at the northern limit of Tel Aviv, over a total of about 90 km (56 mi).
Near En Esur, an early Bronze Age planned metropolis, including a temple, stretching over 65 ha for 6,000 inhabitants, was discovered.
[2] Before the 20th century, the region was covered by the Forest of Sharon, an open woodland dominated by Mount Tabor Oak (Quercus ithaburensis), which extended from Kfar Yona in the north to Ra’ananna in the south.
The intensification of settlement and agriculture in the coastal plain during the 19th century led to deforestation and subsequent environmental degradation known from Hebrew sources.
Historically, while some parts of the Sharon plain were very fertile, much of it was swampy and malarial, a condition exacerbated by massive Ottoman deforestation.