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I I II I I I I I I I I I I I I I I I I I Il-2 considerable evidence of older channels. The pattern of existing and older channels continues to the east to the limit of the study area. TENMILE CREEK Tenmile Creek begins at the northwest corner of the property and runs approximately parallel to the Fraser River for 1 1/2 miles. At that point, the creek turns south and follows a canyon through the SilverCreek property until it finally leaves the property at the south boundary of Section 8. The entire length of Tenmile Creek is a meandering channel similar to the Fraser River, though the meandering is not as extensive and there is not as much evidence of historic channels that have been abandoned. The channel slopes of Tenmile Creek range from 0.2 percent to 1.7 percent in the reach just below Village Drive. -------- There is one farm bridge on Tenmile Creek 4,000 feet west of the highway which was neglected for the study and assumed to washout in the event of a flood. There is also a bridge at Highway 40. This bridge consists of three spans for a 67 foot total length with two concrete piers. An arch culvert has been installed at another road crossing after the aerial photography was done. Apparently this work done by the county. The nominal size of this arch culvert is approximately 103 inches by 81 inches. A dike has been built across the canyon to carry an irrigation ditch. Where the ditch crosses the river a 24-inch culvert has been installed. This culvert has a 14-foot span over the river with about a 5-foot clearance underneath. The next crossing is at Village Drive where 19 24-inch culverts have been installed. Village Drive acts as a small dam to contain a lake. The cul- verts are a spillway of sorts, though they do not have adequate capacity to pass the 100-year flow.