Columbia River
The Columbia drains an area of about . Its drainage basin covers nearly all of Idaho, large portions of British Columbia, Oregon, and Washington, ultimately all of Montana west of the Continental Divide, and small portions of Wyoming, Utah, and Nevada; the total area is similar to the size of France. Roughly of the river's length and 85 percent of its drainage basin are in the US. The Columbia is the twelfth-longest river and has the sixth-largest drainage basin in the United States. In Canada, where the Columbia flows for and drains , the river ranks 23rd in length, and the Canadian part of its basin ranks 13th in size among Canadian basins. 
The Columbia shares its name with nearby places, such as British Columbia, as well as with landforms and bodies of water.
Water resources management in Guatemala
The hydrographic system is divided into three primary drainage basins. First, the Pacific Ocean drainage basin covers 22% of the country and counts 18 watersheds. Some of the rivers in this zone transport volcanic sediments to be deposited along the coast and contributes to coastal flooding due to reduced depths of tidal marshes. Annual surface runoff in this basin is 25.5 km. The Caribbean Sea drainage basin covers 31% of the country and has 10 watersheds. Average annual surface runoff in this basin is calculated at 31.9 km. The Gulf of Mexico basin covers 47% of Guatemala and 10 watersheds. The rivers in this basin have the largest flows in the country and drain towards Mexico. Surface runoff in this basin is 43.3 km.