The Hydrology of Tamriel

http://www.imperial-library.info/content/topographical-map-tamriel-arthmodeusd

In the image above, one can see that the continent of Tamriel is surrounded by water and is also permeated by numerous rivers and streams. These hydrologic (water) features are important not only for the supply of potable water to the provinces of Tamriel but also serve as means of commerce for sea-faring vessels that are engaged in inter-provincial trade. The greatest majority of the river systems are concentrated in the Argonian Province in the southeast of Tamriel.

http://www.imperial-library.info/content/black-marsh-map-vality7

The above image is of the Argonian Province, also named Black Marsh for its swamps and marshes. The river system is distributary in nature meaning that the rivers distribute water outwardly from the primary drainage system or river. A drainage system is defined as any area where water accumulates and drains from that area.

This image of the Province of Cyrodiil (pictured above) shows a dendritic drainage system. A dendritic system orders tributaries that feed the drainage basin on a hierarchical scale from least to greatest. Two of the same order in the hierarchy must converge to form the next higher order, for instance two second order streams merge to create a third order river. It should be noted to the east of the map there is a segment of a second order river that is fed by a first order tributary. Where two differing magnitudes of order confluence (meet) the highest order remains by default.

http://www.imperial-library.info/content/hammerfell-map-zephyr

The map of Hammerfell above once again shows a distributary river system, this time originating from Karnver Falls and then distributing outward onto the plains to the north and east.

http://www.imperial-library.info/content/solstheim-map-official

In this map of Solstheim, the most important hydrologic feature is the Mortrag Glacier (northwest corner of the island). This glacier represents approximately two percent of the fresh water supply for all of Tamriel; the rest comes from rivers and streams.