Powassan Ontario. 1:50,000. Map Sheet 031L03, ed. 4, 1979

This is a georeferenced raster image of a printed paper map of the Powassan, Ontario region (Sheet No. 031L03), published in 1979. It is the fourth edition in a series of maps, which show both natural and man-made features such as relief, spot heights, administrative boundaries, secondary and side roads, railways, trails, wooded areas, waterways including lakes, rivers, streams and rapids, bridges, buildings, mills, power lines, terrain, and land formations. This map was published in 1979 and the information on the map is current as of 1977. Maps were produced by Natural Resources Canada (NRCan) and it's preceding agencies, in partnership with other government agencies. Please note: image / survey capture dates can span several years, and some details may have been updated later than others. Please consult individual map sheets for detailed production information, which can be found in the bottom left hand corner. Original maps were digitally scanned by McGill Libraries in partnership with Canadiana.org, and georeferencing for the maps was provided by the University of Toronto Libraries and Eastview Corporation.

本数据集为1979年发布的安大略省波萨森（Powassan）地区印刷纸质地图（图幅编号：031L03）的地理参考栅格图像。该地图为系列地图的第四版，图中涵盖自然与人工地物要素，包括地形起伏、独立高程点、行政边界、次级与支路道路、铁路、步道、林区、水系（含湖泊、河流、溪流与急流）、桥梁、建筑、磨坊、输电线路、地貌及地质构造。此地图虽于1979年发布，但所载信息的现势性截至1977年。本地图由加拿大自然资源部（Natural Resources Canada, NRCan）及其前身机构联合其他政府部门共同编制。请注意：图像采集与外业测量周期可能跨越数年，部分地物细节的更新时间可能存在差异。如需获取详细的地图制作信息，请查阅图幅左下角标注的相关内容。原始纸质地图由麦吉尔大学图书馆与Canadiana.org合作完成数字化扫描，地图的地理参考配准工作由多伦多大学图书馆与Eastview Corporation共同完成。