Reasons why peninsular rivers are seasonal in nature:

1. Topography of the region:
Peninsular rivers flow through regions with undulating topography, which leads to the formation of intermittent streams and seasonal rivers. The lack of consistent elevation along the river course results in the rivers being dependent on seasonal rainfall for their flow. During the monsoon season, when the region receives heavy rainfall, the rivers swell and flow with vigor. However, during the dry season, when rainfall is scarce, the rivers experience reduced flow or even dry up completely.

2. Monsoon climate:
The peninsular region of India experiences a monsoon climate, characterized by distinct wet and dry seasons. The bulk of the annual rainfall in this region is received during the southwest monsoon season, which lasts from June to September. This intense period of rainfall leads to a surge in water levels in rivers, resulting in flooding in some areas. However, once the monsoon season ends, the rivers start to dry up as the rainfall diminishes. This seasonal pattern of rainfall directly impacts the flow of peninsular rivers, making them seasonal in nature.

3. Water scarcity and human activities:
Due to the seasonal nature of peninsular rivers, water scarcity is a common issue faced by communities living along their banks. As populations grow and demand for water increases, human activities such as dam construction, deforestation, and excessive extraction of groundwater further impact the flow of rivers. These activities disrupt the natural flow of water in rivers, exacerbating the seasonal variations in water levels. Additionally, the construction of dams for irrigation, hydropower generation, and flood control purposes can lead to the formation of reservoirs, which can alter the flow patterns of rivers and impact their seasonal nature.

cause 1.these rivers receive water from rainfall which is uncertain