Colgrove Lake Ontario. 1:50,000. Map Sheet 053F04, ed. 1, 1977

This is a georeferenced raster image of a printed paper map of the Colgrove Lake, Ontario region (Sheet No. 053F04), published in 1977. It is the first 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 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.本数据集为安大略省科尔格罗夫湖（Colgrove Lake）地区印刷纸质地图的地理参考栅格影像（georeferenced raster image），图幅编号为053F04，于1977年正式出版。该地图为系列地图的首版，完整呈现了该区域的自然与人工地物要素，包括地形起伏、高程点、行政界线、次要道路与支路、铁路、步道、林区、涵盖湖泊、河流、溪流与急流的水系、桥梁、建筑、磨坊、输电线、地表形态及地质构造。本系列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：影像采集与外业测量的时间跨度可达数年，部分细节的更新时序可能晚于其他内容。如需获取详细编制信息，请查阅单幅地图图廓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，地图的地理配准工作由多伦多大学图书馆与Eastview Corporation提供技术支持。