[OC] Great Lakes bathymetry | Source: https://t.co/gV4kEnFjVA #maps #geography https://t.co/dXxnSRuYRB[OC] Great Lakes bathymetry | Source: https://t.co/gV4kEnFjVA #maps 8151129 [OC] Great

Coldest temperature in a typical winter, 1981-2014. | Source: https://t.co/0eThA66WSl #maps #geography https://t.co/LaJ8A1PQGJColdest temperature in a typical winter, 1981-2014. | Source: 8533847 Coldest temperature in a

[OC] Great Lakes bathymetry | Source: https://t.co/gV4kEnFjVA #maps #geography https://t.co/dXxnSRuYRB[OC] Great 7382065 [OC] Great Lakes bathymetry | Source: https://t.co/gV4kEnFjVA #maps