Area "D" encompasses the Cinderella Trail and the creek that parallels Cinderella Trail. This area includes erosion features 5, 7, 8, 9, 10, 11, and 12. The trail is cut into the valley wall approximately 75 feet upslope of the creek. It is well compacted and extremely steep in places. Efforts have been made in the past to divert surface runoff away from the trail. Unfortunately, the water bars have not been maintained and have been either filled with sediment or overtopped and eroded away. A high outside berm exists along the trail between erosion features 10 and 12. This berm prevents water from escaping the trail and routes runoff down the trail. Small rills have formed in many places along the trail in response to these drainage problems. Shallow bedrock conditions in the vicinity of erosion feature 10 are limiting the development of rills. Erosion feature 7 has contributed a considerable amount of sediment to the creek channel and is considered a major problem. The combined effects of culvert plugging, streamflow across the trail, and past fill prism failures has resulted in a major sediment contribution to the creek and a recreation safety hazard.

Erosion features 13, 14, and 15 were documented in Area E (Figure 1). These features were located between Sequoia Arena and the junction of the Chaparral Trail and Sequoia Bayview Trail. Drainage problems associated with a high outside berm has contributed to the development of rills and gullies at each of these features. Troughs in the trail exist in a few places along Area "E". These troughs are approximately 1.5 to 2 feet wide and resemble troughs the authors have observed that were created by horse pack trains on trails in the Sierra Nevada mountains. Based on the close proximity of these features to the horse arena, we infer that the troughs were originally created by horse traffic. Surface water runoff funneled down the trail by the high outside berms has caused these troughs to increase in size.