Step 1: Understanding the Concept:
Traditional rainwater and runoff harvesting methods vary across India's diverse geographic zones, utilizing locally sourced materials to conserve water for dry seasons.
Step 2: Detailed Explanation:
- Kattas (or Katta) are traditional temporary check dams constructed across small streams in coastal Karnataka and parts of northern Kerala.
- They are built using locally available soil, stones, and wood toward the end of the monsoon season.
- By blocking the flow of water, Kattas help hold stream runoff, which recharges the local water table, raises the water levels in nearby open wells, and provides essential irrigation water during the summer months.
Step 3: Final Answer:
Kattas is a traditional water harvesting method originating from the state of Karnataka.