Gujarat is the _____ largest dam builder state of India.

Dams are built for a variety of purposes, including irrigation, flood control, hydroelectric power generation, and water supply. They can have a significant impact on the environment, both positive and negative. Some of the potential negative impacts of dams include:

• Loss of habitat for fish and other wildlife
• Sedimentation and erosion
• Changes in water quality
• Displacement of people

However, dams can also have a number of positive impacts, such as:

• Increased water supply for irrigation and drinking
• Reduced flooding
• Increased hydroelectric power generation
• Improved water quality
• Increased recreational opportunities

The decision of whether or not to build a dam is a complex one that should be made on a case-by-case basis, taking into account all of the potential impacts.