Elevation contour lines - 1-metre contours

​The 1 metre contours were generated from data acquired as part of the acquisition of orthophotos in 2002. Contours at 2 and 10 metre intervals are available as separate datasets. They have not been updated since they were created and do not reflect changes that have occurred since they were created. Note​This dataset was created in 2002 and reflects conditions in 2002.  This data has not changed Data accuracy​These must be considered as approximate because they were digitized from orthophotos rather than being created using survey techniques.

本数据集的1米等高线系由2002年获取正射影像时采集的数据生成。2米和10米间隔的等高线分别作为独立的数据集提供。自创建以来，这些数据集未进行更新，无法反映自创建以来所发生的变化。请注意，本数据集创建于2002年，反映了当时的状况。这些数据未发生变化。
数据精度
这些数据应被视为近似值，因为它们是通过正射影像数字化而非采用测量技术创建的。