In dictionaries:
Mississippi River System
The Mississippi River System, also referred to as the Western Rivers, is a mostly riverine network of the United States which includes the Mississippi River and connecting waterways.
Dnieper River System of Dams
Nelson River DC Transmission System
The Nelson River DC Transmission System, also known as the Manitoba Bipole, is an electric power transmission system of three high voltage, direct current lines in Manitoba, Canada, operated by Manitoba Hydro as part of the Nelson River Hydroelectric Project.
North Saskatchewan River valley parks system
The North Saskatchewan River valley parks system, also known as the Ribbon of Green or the River Valley Parks, is a continuous collection of urban parks around the North Saskatchewan River valley in the Edmonton Metropolitan Region of Alberta, Canada.
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