The Antarctic Digital Database (ADD) is the premier source of vector topographic data for Antarctica.Users must register to use the data
OPEN
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The China Historical Geographic Information System (CHGIS) project was launched on January 8th 2001, with funding from the Luce Foundation. The CHGIS will establish a database of historical administrative units for different periods in Chinese… Read more.
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The National Pollutant Release Inventory (NPRI) provides Canadians with access to information on the releases and transfers of key pollutants in their communities. It is the only national, legislated, publicly accessible inventory of its kind in… Read more.
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Lake Ontario is on charts 14800 and 14802
Lake Erie is chart 14820
Lake Superior is on charts 14961, 14964, 14966 and 14967
Lake Huron is chart 14860
Lake Michigan is on several charts