Shimen Dam and reservoir are popular destinations in Taoyuan City of Taiwan. The dam is open to the public, and around the dam are many parks and trails to enjoy, as well as great scenery of the surrounding mountains and plains.

The name "Shimen”which means "stone gates" comes from the fact that the dam was built on a narrow gorge in the Dahan River valley, which was called the "stone gate."

Shimen Dam was completed in 1964 and took 9 years and NT 1.4 billion to complete. It was the ROC's first major water project. 2,000 people were displaced due to the dam's construction. The reservoir created year round water capacity for surrounding farmland, doubling agricultural yields.

Since it was built, the water capacity has been reduced by about a third due to silting.

The dam has also become a popular tourist destination due to the beautiful scenery surrounding it.