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Find rivers, tributaries, drainage basins and explanations of flowing water.
Rioni River · Landforms · Map guides
The Rioni links the Greater Caucasus with Georgia's Black Sea coast, but its route is not a straight line from mountains to sea. Its tributary basin, changing valley…
Alazani Valley · Landforms · Map guides
The familiar view across Kakheti is a broad lowland framed by mountains. A river map shows something larger: headwaters, tributary valleys, a cross-border river and a downstream reservoir.…
Countries & regions · Map guides
An Amazon map can show a river, a watershed, a rainforest region, or an administrative territory. Those outlines overlap, but they are not interchangeable. Reading them separately makes…
Danube River · Countries & regions · Map guides
The Danube’s blue line and its drainage basin describe different geographies. One follows the river from southern Germany to the Black Sea; the other gathers tributaries and headwaters…
Colorado · Landforms · Map guides
A blue river line tells only part of the Colorado's story. The larger drainage basin explains where its tributaries gather water; reservoirs, diversions and the Mexican delta explain…
Mississippi · Landforms · Map guides
What is the Mississippi River basin?The Mississippi River basin is the land drained by the Mississippi and its connected tributaries. It reaches far beyond the main river, linking…
Georgia · Landforms · Map guides
A river flowing through Georgia does not necessarily head toward its Black Sea coast. Some rivers cross the country on their way to the Caspian, while northern mountain…
United States · Landforms · Map guides
A blue line follows a river channel. A drainage basin includes the land feeding that channel, often far beyond its banks and across several states. Reading the two…
Coasts · Comparisons
Two coastal inlets can both be long, narrow and scenic yet have different histories. To distinguish a fjord from a ria, ask what shaped the valley before seawater…
Lakes · Explainers
A river bend is not just a line drawn across a map. Water, sediment and the channel’s banks continually influence one another. Where the banks can move, that…
Climate · Explainers
“River in the sky” is a memorable phrase, but it can suggest the wrong picture: a suspended stream of liquid water. The real feature is moving moisture, and…
Landforms · Map guides
Europe’s mountains and drainage systems do not stop at national borders. This map emphasizes the terrain from the Atlantic to the Urals, with selected rivers and broad landform…