Answer:
damming of the Herch Hetchy Valley
Step-by-step explanation:
The Hetch Hetchy debate was as a result of a proposal made to build a dam In The Hetch Hetchy valley in order to get steady water supply in San Francisco.
Lots of petitions were submitted from different parts of the country as a result. At the end, the president woodrow signed the bill after it was passed by the congress as a legislation for the dam to be created.