The drainage basin includes all the surface water from rain runoff, snowmelt, hail, sleet and nearby streams that run downslope towards the shared outlet, as well as the groundwater underneath the earth's surface.
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The hydrological cycle in a small river basin refers to the continuous movement of water from the basin's surface water, groundwater, and atmosphere. It involves processes such as evaporation, condensation, precipitation, infiltration, and runoff, which work together to circulate and distribute water throughout the basin. This cycle plays a crucial role in maintaining the water balance and ecosystem health of the small river basin.
Some of the major river basins in Nigeria include the Niger Basin Authority (mandate: cooperation, sustainable management of water resources), the Benue Basin Development Authority (mandate: development of water resources for agriculture, fisheries, and urban water supply), and the Ogun-Oshun River Basin Development Authority (mandate: water resources development for agriculture, domestic, and industrial use).
The agriculture in the Ganga-Brahmaputra basin is varied, with a focus on rice, wheat, jute, sugarcane, and tea cultivation. The region also supports a thriving fishing industry due to its extensive network of rivers and water bodies. Additionally, the basin is known for its fertile soil and diverse crop production.
The Amazon River basin in South America is a prominent example of a basin landform. It is a large low-lying area surrounded by higher elevations where the river and its tributaries drain and collect water. The basin supports a diverse ecosystem with high biodiversity.
The Orinoco watershed - its basin, covers an area of about 990000 km2