What are the causes of imbalance and effects of imbalance for the Hydrologic Cycle?

We withdraw large quantities of fresh water.

We clear vegetation and increase runoff, reduce filtering, and increase flooding.

We add nutrients like fertilizers and modify the quality of the water.

The earth's water cycle may be speeding up due to a warmer climate. This could change global precipitation patterns and may intensify global warming (water vapor increases in the troposphere).