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The Daguoxi Creek, located at the foot of Dahu Village, Neihu District, is a natural creek. It flows downhill from the 485 meter-high Bailishi Lake Hill. The upper reaches of the creek are mostly covered with secondary forests. The lower reaches flow through the Yuánjué Waterfall and into the drainage system of a residential area. The creek then goes through a culvert under Dahu Village Street and into Dahu Park. The total length of the creek is about 3,500 meters, and its catchment area is 340 hectares. For safety and conservation, a near-natural engineering approach with many pores was adopted in the renovation of Daguoxi Creek in Neihu District. This approach provides habitats for the growth of animals and plants. The creek has become a rich ecological resource. According to the investigation by the Department of General Affairs, Taipei, many kinds of animals live in the creek, including the Taiwan magpie, Menetrier's tree frog, Chinese tree toad, Taiwan's dark star small butterfly, the end of the purple butterfly, the jade belt butterfly, Radovich's red frog, the little egret, the five-color bird, and the yellow-spotted cricket. The creek is an ideal outdoor ecological classroom. The downstream area of Daguoxi Creek was originally an agricultural area. Due to urban development, the land was re-planned as the Dahu Village residential community. To meet the demand for roads, the creek was replaced with an underground culvert. In the past, when heavy rain caused the culverts to be overloaded with floodwaters, the creek was often washed away, resulting in soil erosion. In August 1996, Typhoon Winnie caused a major disaster. Daguoxi Creek is located upstream of the Dahu Village community. The creek was renovated with stone revetments and porous spaces, which are favorable for biological habitats and can reduce erosion. To meet the needs of a water-friendly environment and recreational activities, a water-friendly trail was built along the creek bed. The trail is like a backyard garden for nearby residents. To create a natural ecological environment, the renovation project utilized fish ladders (drop structures) and bed consolidation structures to reduce the gradient of the creek and slow down the current. This approach reduces the energy of erosion. A shallow area was built to store creek water and create a space for fish, shrimp, and aquatic plants to live. The creek's ecological environment was preserved. In addition, the renovation project set up facilities, such as water-friendly platforms and trails, in wider areas of the creek according to its natural topography. These facilities allow nearby residents and visitors to get close to the creek and enjoy the fun of interacting with water. (Source: Department of General Affairs, Taipei)