Oil spills: cause pollution to waterways causing the precipitation to increase in Ph value. Therefore causing acid rain. This affects the water cycle by making the PH of the water higher making it harder to evaporate.
Dams: Affect the water cycle by making transpiration harder to do because dams are using manly a foraged concrete area so less water is going through the transpiration phase.
Grey Water Recycling: Greywater is from a washing machine or basin and recycling is the process of using it in water gardens and greenhouses. The benefits of it are reducing water waste.