Western Pakistan is dominated by mountain ranges, dry plateaux and enclosed basins. Relief and low rainfall produce sparse settlement, but valleys, mineral deposits and transport routes create important local centres.
Learning objectives
- Explain the main geographical ideas in this lesson.
- Use Pakistan-specific evidence and map terminology.
- Apply knowledge to structured and evaluation questions.
Major relief regions
The western highlands include ranges such as the Sulaiman, Kirthar and Safed Koh systems, together with the Balochistan Plateau. Their elevations are generally lower than the far northern ranges but remain rugged and arid.
Intermontane basins such as the Quetta basin contain flatter land surrounded by mountains. These basins may concentrate settlement because groundwater, roads and cultivable soils are more accessible than on steep slopes.
Drainage and water limitations
Many western streams are seasonal and flow strongly only after rain. Some drainage is inland rather than reaching the sea. High evaporation and unreliable rainfall make water storage and groundwater management essential.
Karez systems, wells, small dams and modern tube wells have supported settlement, but excessive pumping may lower water tables.
Human activity
Pastoral farming is common where land is too dry for crops. Orchards may develop in cooler upland basins where irrigation is available. Minerals, border trade and roads provide alternative employment.
Development is constrained by long distances, scattered population, limited water, difficult relief and high infrastructure costs.
O Level examination guidance
- Use “arid” or “semi-arid” accurately rather than simply “hot”.
- Explain why basins attract settlement compared with surrounding mountains.
Review questions and answers
- Why are settlements concentrated in some western basins?
They provide flatter land, routes, groundwater and better conditions for farming. - State one risk of excessive tube-well use.
Falling groundwater levels and eventual water shortage.
