Answer:
At the end of the Hunger Games book, the fate of the stream is not explicitly mentioned. However, it is safe to assume that the stream is still present and flowing as it was before the Games.
Explanation:
After Katniss and Peeta won the Games, they received medical treatment in the Capitol but there were no changes mentioned to the arena or the surrounding areas.
Another stream that is mentioned in the book is the one that runs through the Cornucopia. This stream is the site of the initial bloodbath and is also where Thresh kills Clove after she attacks Katniss. The stream is a central location in the Games, as it provides water and is a common meeting place for the tributes.
Towards the end of the book, after the rule change, Katniss and Peeta take shelter by a stream and uses it's water and to wash off the blood and grime from the Games.
Overall, the streams play an important role in the Hunger Games book, serving as a source of water, a meeting place, and a site of significant events throughout the story.