A small city gets its drinking water from the river running through its center. The river is fed by rivers that flow down the mountains nearby. How would excessive rainfall in the mountains most likely affect the turbidity of this local water source?

Excessive rainfall in the mountains would increase the turbidity of this local water source.

This is because due to heavy rainfall the suspended particles in the rivers will increase through runoff. The heavy water flow in the river allows the suspended particles to washed from the soil surface into the river that increases the turbidity of the local resources.

Hence, the turbidity of the local water source will increase with the excessive rainfall in the mountains.

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