Nigeria: total renewable surface water by source

Internal sources were responsible for the highest proportion of the total renewable surface water resources in Nigeria as of 2020. This referred to 214 billion cubic meters of the renewable water resources. External resources amounted to around 65 billion cubic meters.

Total renewable surface water in Nigeria in 2020, by source (in billion cubic meters per year)

Characteristic	Volume in billion cubic meters per year
Internal	214
External	65.2

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Release date

January 2024

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Region

Nigeria

Survey time period

2020

Supplementary notes

The release date is the date of access.

The source notes that total renewable surface water is the sum of the internal renewable surface water resources and the total external renewable surface water resources.
Surface water refers to all waters on earth's surface found in streams, rivers, lakes, marshes or wetlands, and ice and snow.

Internal renewable surface water resources refer to long-term average annual volume of surface water generated by direct runoff from endogenous precipitation (surface runoff) and groundwater contributions.
External renewable surface water resources refer to the sum of the actual inflow not submitted to treaties, actual inflow secured through treaties, the accounted flow of border rivers and the accounted part of shared lakes, minus the outflow reserved for downstream countries through treaties.

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