Contours 100 ft

Contour lines are curves that connect contiguous points of the same altitude. For example, every point on a marked line of 4,500 feet elevation is 4,500 feet above mean sea level. This feature class shows elevation contour lines in Deschutes County, Oregon at 100 foot intervals.等高线（Contour lines）是连接同一海拔高度连续点的曲线。例如，海拔标注为4500英尺的等高线上的任意一点，均位于平均海平面以上4500英尺处。本要素类展示了俄勒冈州德舒特县（Deschutes County）间隔为100英尺的海拔等高线。