WAEC Geography 1999 Theory question 106

Theory question 106

Nigeria: People and Economy

(a) Describe the factors which favour the development of hydro-electric power (HEP) resources (b) State the benefits of hydro-electric power supply to the people of Nigeria (c) Outline three major problems facing the development of HEP in Nigeria

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Model answer

(a) Large rivers with constant volume; heavy, reliable rainfall in the catchment; waterfalls, rapids or steep gradients; narrow valley with firm rock for the dam; large market; capital and technology; lack of other power sources.
(b) Electricity for homes and industries; cheaper than thermal power and renewable; reservoirs for irrigation, fishing and water supply; flood control; navigation; tourism; jobs.
(c) Low water level in the dry season reducing output; silting of reservoirs; high cost of dams and transmission lines; displacement of people; flat land with few good sites; poor maintenance and management; water weeds.

Explanation

Use Kainji, Jebba and Shiroro as examples.