Trivia Questions About Rivers

Tap a choice for the answer and its reason, from the confluence to the nilometer.

Question 1 of 10

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Which landform does a river build from sediment where its flow slows down?

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Unofficial practice questions, not affiliated with any school, exam board or quiz show. Bank checked October 3, 2026.

How it works

These trivia questions about rivers come in four rounds: how a river works, rivers and people, lakes, and the Nile. Disputes over water and other things that change by the year are left out.

Read the full guide

Trivia questions on lakes

Lakes has endorheic lakes, karst lakes, Quake Lake, the Secchi disk and the lakes of Titan. How a river works is the vocabulary round: confluence, drainage basin, alluvium, meander, delta.

One river in depth

The Nile follows the river from Lake Tana and the White Nile to Alexandria, with nilometers, Trajan's canal and Herodotus at Aswan. Pick a choice and the card marks it and says why. Print question sheet arrives with the end of the first ten questions.

Questions and answers

What are some easy trivia questions about rivers?

What is the place where two rivers merge called? Which landform does a river build where its flow slows? What did the Nile's yearly flood leave on its banks? The answers are a confluence, a delta and nutrient-rich silt.

Is the longest river asked?

No. The pack asks how rivers and lakes work and follows the Nile from Lake Tana to Alexandria; it does not ask which river is longest. Lake Baikal as the deepest lake is asked by other packs of this site.

How were the answers checked?

All were read on October 3, 2026 in three English Wikipedia articles, River, Lake and Nile; each question links its own, and the oldest dam links its own article. Great Lakes questions are left to the site's Great Lakes pack.

All 48 questions with answers

How a river works 11

  • Freshwater fish make up what share of the world's fish species? Answer: 40%. Source: Wikipedia: River
  • From what must all the water that flows in rivers ultimately come? Answer: Precipitation. Source: Wikipedia: River
  • In stream ordering, what results when two 1st order rivers merge? Answer: A 2nd order river. Source: Wikipedia: River
  • Rivers seldom run straight. What is the word for a river bending back and forth? Answer: Meander. Source: Wikipedia: River
  • Sorting river ecosystems by the variety of aquatic life they can sustain is known as which concept? Answer: The fish zonation concept. Source: Wikipedia: River
  • What is an area called in which surface water flows to one common outlet? Answer: A drainage basin. Source: Wikipedia: River
  • What is the place called where two rivers merge? Answer: A confluence. Source: Wikipedia: River
  • What is the sediment that a river carries often called? Answer: Alluvium. Source: Wikipedia: River
  • What keeps one river's water separate from the next river's? Answer: A drainage divide. Source: Wikipedia: River
  • Where beyond Earth is there evidence that rivers flowed for at least 100,000 years? Answer: Mars. Source: Wikipedia: River
  • Which landform does a river build from sediment where its flow slows down? Answer: A delta. Source: Wikipedia: River

Rivers and people 10

  • About what share of international borders are large rivers? Answer: 23%. Source: Wikipedia: River
  • At least how many dams higher than 6 feet stand in the United States? Answer: 75,000. Source: Wikipedia: River
  • Canals began to be cut in Egypt as early as when? Answer: 3000 BC. Source: Wikipedia: River
  • The drainage basin of the Mississippi River covers what share of the contiguous United States? Answer: 40%. Source: Wikipedia: River
  • On which kind of land were the first civilizations of Earth born? Answer: Floodplains. Source: Wikipedia: River
  • Straightening a river so that boats travel a shorter distance is known as what? Answer: Channelization. Source: Wikipedia: River
  • Sunswick Creek, covered over in the 1800s, now runs through a pipe under which city? Answer: New York City. Source: Wikipedia: River
  • What is the name of the ancient dam built near Cairo more than 4,500 years ago? Answer: Sadd el-Kafara. Source: Wikipedia: Sadd el-Kafara
  • Which mechanical device was used in ancient Egypt to raise water? Answer: The shadoof. Source: Wikipedia: River
  • Which sea did one of the first large canals of France connect to the Atlantic? Answer: The Mediterranean Sea. Source: Wikipedia: River

Lakes 14

  • A lake of standing water in a closed hollow in limestone is called what? Answer: A karst lake. Source: Wikipedia: Lake
  • Australia's largest lake is which salt lake? Answer: Lake Eyre. Source: Wikipedia: Lake
  • Besides Earth, which is the only body known to have large lakes? Answer: Titan. Source: Wikipedia: Lake
  • By which other name is a lake's drainage basin known? Answer: Its catchment area. Source: Wikipedia: Lake
  • Canada is estimated to have at least how many lakes? Answer: 2 million. Source: Wikipedia: Lake
  • The crater lake that may be the world's highest lies on which mountain? Answer: Ojos del Salado. Source: Wikipedia: Lake
  • Forel, the first scientist to classify lakes by their layers of temperature, is called the father of which science? Answer: Limnology. Source: Wikipedia: Lake
  • Lakes in total cover about what share of the Earth's surface? Answer: Less than 2%. Source: Wikipedia: Lake
  • Quake Lake formed in 1959 after an earthquake caused what to block a valley? Answer: A landslide. Source: Wikipedia: Lake
  • Sarez Lake formed in 1911 when a landslide blocked a deep valley in which country? Answer: Tajikistan. Source: Wikipedia: Lake
  • What are the lakes called that lie in rift valleys, some of the largest on Earth? Answer: Rift lakes. Source: Wikipedia: Lake
  • What is a lake with no outflow called? Answer: Endorheic. Source: Wikipedia: Lake
  • What is the cold, dense layer of water near the bottom of a lake called? Answer: The hypolimnion. Source: Wikipedia: Lake
  • Which tool, a 20-cm disk with black and white quarters, measures how clear a lake's water is? Answer: A Secchi disk. Source: Wikipedia: Lake

The Nile 13

  • Across how many countries does the Nile's drainage basin extend? Answer: Eleven. Source: Wikipedia: Nile
  • For about how long has the Nile followed its present course? Answer: 15,000 years. Source: Wikipedia: Nile
  • The Greek historian Herodotus traveled up the Nile as far as which place? Answer: Aswan. Source: Wikipedia: Nile
  • In ancient Egypt, which name was given to the region of the Nile Delta? Answer: Lower Egypt. Source: Wikipedia: Nile
  • Near which city does the Nile reach the sea, where it has formed a large delta? Answer: Alexandria. Source: Wikipedia: Nile
  • Near which lake in Ethiopia does the Blue Nile begin? Answer: Lake Tana. Source: Wikipedia: Nile
  • Through which desert does the Nile flow north from Khartoum toward Cairo? Answer: The Nubian Desert. Source: Wikipedia: Nile
  • What are landscape artworks that feature the Nile called? Answer: Nilotic landscapes. Source: Wikipedia: Nile
  • What are the simple gauges called that have measured the level of the Nile for thousands of years? Answer: Nilometers. Source: Wikipedia: Nile
  • What are the two major tributaries of the Nile called? Answer: The White Nile and the Blue Nile. Source: Wikipedia: Nile
  • What did the yearly flood of the Nile leave along its banks? Answer: Nutrient-rich silt. Source: Wikipedia: Nile
  • Which of the Nile's two major tributaries brings more than twice as much water as the other? Answer: The Blue Nile. Source: Wikipedia: Nile
  • Which Roman emperor had a canal built to join the Nile to the Red Sea? Answer: Trajan. Source: Wikipedia: Nile
How this list was compiled

Written for this site; nothing was copied from another list. Questions and wrong choices are our own. Each explanation restates, in our own sentences, a fact from the English Wikipedia article named and linked beside the question (https://en.wikipedia.org, text under the Creative Commons Attribution-ShareAlike 4.0 license): River, Lake and Nile and, for one question, Sadd el-Kafara. Each article was read on October 3, 2026, and the passage that states each fact was found in it before the question was kept. Left out on purpose: water-sharing disputes of today, pollution claims and anything else a year changes. A natural superlative that holds for decades may stay. Levels are our estimate: easy is fair for any table, medium suits people who know the subject, hard will stump most tables. Each question also carries the date its article was read. Licence: own work