Q 01/05

What is the Rio Grande called in Mexico?

A) Río Salado

B) Río Conchos

C) Río Bravo (del Norte)

D) Río Colorado

Answer · why

C) Río Bravo (del Norte)

'Bravo' means furious, agitated or wild; the Navajo call it Tó Ba'áadi.

Q 02/05

How long is the Rio Grande?

A) 900 miles (1,450 km)

B) 1,200 miles (1,930 km)

C) 1,896 miles (3,051 km)

D) 1,450 miles (2,330 km)

Answer · why

C) 1,896 miles (3,051 km)

It flows primarily through arid and semi-arid lands and is a vital water source for seven US and Mexican states.

Q 03/05

Where does the Rio Grande rank among the longest rivers in the United States?

A) Tenth

B) Fourth

C) First

D) Second

Answer · why

B) Fourth

Its drainage basin covers 182,200 square miles, or 336,000 counting the adjacent closed basins.

Q 04/05

In which US state does the Rio Grande rise?

A) Colorado

B) Utah

C) Texas

D) New Mexico

Answer · why

A) Colorado

It forms from several streams at the base of Canby Mountain in the San Juan Mountains, just east of the Continental Divide.

Q 05/05

Into which body of water does the Rio Grande empty?

A) The Caribbean Sea

B) The Gulf of California

C) The Pacific Ocean

D) The Gulf of Mexico

Answer · why

D) The Gulf of Mexico

It ends in a small sandy delta; since the mid-20th century only a fraction of its water gets that far.