1. How much water can a dam store to provide during drought?

The amount of water a dam can store varies based on its design, size, and the capacity of the reservoir. Dams can store from millions to billions of gallons of water, which can then be used when precipitation is low.

2. Need for a stable site to support a dam:

It is crucial to ensure the site is stable to prevent structural failures, which could lead to catastrophic failures of the dam. Stability involves factors like geological conditions, soil composition, and potential seismic activity.

3. Fewer trees around a reservoir formed by a dam:

Fewer trees may grow around reservoirs due to changes in water levels, flooding of land, and altered soil conditions. Additionally, the waterlogged soil can be inhospitable for some tree species.

4. Water temperature changes resulting from a dam:

When a dam is built, water flowing from the reservoir may be cooler or warmer than natural river temperatures, depending on the water source. This can affect aquatic ecosystems and fish populations since they rely on certain temperature ranges for survival.

If you have more questions or need further assistance, feel free to ask!