Talk:Great Lakes

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Great Lakes disappear at lowzooms

At zooms <=5 the Great Lakes disappear with Standard/mapnik. OSM seems to draw the Black and Caspian Seas ("landlocked" large inland bodies of water, variously called Lake or Sea) properly at lowzooms. Can this be fixed? I know these are highly complex structures in super-relations (and I understand those well) and that part of certain coastline was changed. Is there a "bug report" place in OSM where it's better to discuss this? Apologies in advance if this got discussed somewhere else and I missed it, if so please point me there. Stevea (talk) 02:55, 17 October 2016 (UTC)

Great Lakes are not seas (like the Black and Caspian Seas that are delimtied by coastlines). They are lakes, and lakes in land are not rendered, independantly of their size. This is the same case with the Baikal Lake in Russia (between regions RU-IRK and RU-BU), or large lakes in Africa (notably those around Tanzania and Uganda), or Geneva Lake/Lac Léman between France and Switzerland). The Back sea is not completely landlocked,, it communicates with the Mediterranean Sea and thhe Atlantic Ocean. The Caspian Sea is full landlocked but is tagged using coastlines (with natural=coastline), the lakes are tagged as polygonal water surfaces connected to other water surfaces of their rivers crossing them and flowing down to the sea through the land.
The good question is then: should those very large lakes be tagges like seas with coastlines ? I think not because they are not salted (their water is renewed), however Lake Baikal in Russia should be considered as a sea (water does not exit it, and it has a high concentration of salt in its very deep waters). Great Lakes in North America, Lake Victoria in Africa and Lake Baikal in Russia however could be marked using coastlines given their huge size and the complexity of their very long borders, and hte fact that they create sea-like meteorological conditions, just like the Caspian Sea, even if they are not reached by large oceanic streams caused by Earth rotation, they are still slighly affected by circular streams created internally by Earth rotation (but more importantly by temperature differences between the warmer surface and cold deep waters in their center and variations across seasons, the effect being more visiblle in the Tropical area where the Caspian Sea is located, but much not noticeable in Great Lakes and Lake Baikal). — Verdy_p (talk) 04:24, 18 October 2016 (UTC)