Its drainage area includes the slopes of both the Colombian and Venezuelan Andes.
The total loss in the drainage area of Pompton River was $350,000.
No important tributary is received, and the drainage area does not exceed 240 sq. m.
The greater part of the country belongs, however, to the drainage area of the Congo river.
The whole of the hill country north of Asmara belongs to the drainage area of the Baraka or Anseba.
About 63% of the area lies in the basin of the Mekong river and 37% in the Salween drainage area.
In a certain Colorado drainage area, the drainage channel is normally dry except after a rainfall of one-half inch or more.
Three mains have since been added, giving the city water from a drainage area of seventy-four square miles.
Therefore the figure 11.74 represents a conservative mean for a calculation of total amount of water over the drainage area.