Which of the following is an advantage of kulhs?

Kulhs is a local system of canal irrigation that evolved in parts of Himachal Pradesh over four hundred years ago. The management of water flowing in the kulhs is the responsible agreement among the villagers. It is a water harvesting system used for irrigation purposes for the cultivation of crops.

The advantages of kulhs are water conservation and increased crop yields, low cost and accessibility for farmers with limited resources, community involvement and ownership, cultural and historical significance, and an environmentally sustainable method of irrigation.