1. Which is the deepest lake in the UK?

   1. Loch Ness

   2. Windermere

   3. Wast Water

   4. Loch Morar

2. 

   What is the world's largest 'lake' by area?

   1. Superior

   2. Caspian

   3. Baikal

   4. Victoria

3. 

   What is the world's longest river wholly in one country?

   1. Yangtze

   2. Mississippi

   3. Mekong

   4. Paraná

4. 

   What is the second longest river in the UK?

   1. Thames

   2. Severn

   3. Trent

   4. Clyde

5. 

   What type of fish used to live in the River Trent until 1902, since when it has become locally extinct?

   1. Pike

   2. Bream

   3. Trout

   4. Common sturgeon

6. 

   Which of the following French towns is not on the River Seine?

   1. Caudebec-en-Caux

   2. Vernon

   3. Metz

   4. Rouen

7. 

   One of these lakes in the UK is artificial. Which is it?

   1. Kielder Water

   2. Llyn Tegid

   3. Hickling Broad

   4. Hornsea Mere

8. 

   Which of the following is considered the longest continuous bridge over water in the world?

   1. Pont de Normandie

   2. Lake Pontchartrain Causeway

   3. Severn Mile Bridge

   4. Öresund Bridge

9. 

   Vasco da Gama bridge, the longest road bridge in an EU country, crosses which river?

   1. Tagus

   2. Rhône

   3. Douro

   4. Tiber

10. 

    Manitoulin Island is the largest freshwater lake island in the world. But what lake is it in?

    1. Great Bear

    2. Van

    3. Michigan

    4. Huron

11. 

    Which of the following cities is not on the Amazon?

    1. Belém

    2. Iquitos

    3. Salto del Guairá

    4. Manaus

12. 

    What do Italy's Lake Avernus, Yellowstone Lake in the US, Ecuador's Quilotoa and Lagoa das Sete Cidades in the Azores have in common?

    1. They are all salt lakes

    2. They all occupy volcanic craters

    3. Vast flocks of flamingoes visit them

    4. It is illegal to fish in them

13. 

    Which UK river rises in Plynlimon, Wales?

    1. Severn

    2. Great Ouse

    3. Usk

    4. Dee

14. 

    Which US river is known as the Daughter of the Stars for its vivid reflections?

    1. Missouri

    2. Shenandoah

    3. Colorado

    4. Hudson

15. 

    Which of these popular German lakes is not in Berlin?

    1. Müggelsee

    2. Wannsee

    3. Krumme Lanke

    4. Titisee

Solutions

1:D, 2:B, 3:A, 4:A - The longest is the River Severn., 5:D - This critically endangered European species of sturgeon has not been seen in the Trent for 118 years. Non-native Russian sturgeon have, however, been seen in the past few years., 6:C - Metz is on the Moselle, 7:A - Kielder is the UK's largest artificial lake by capacity, 8:B - The longer of the two bridges making up the causeway near New Orleans is 23.83 miles long, 9:A - The bridge spans the Tagus in Lisbon and is 7.6 miles long, 10:D, 11:C - On the Paraná, 12:B, 13:A, 14:B - Shenandoah is a word of unknown Native American origin, but one meaning attached to it is “clear daughter of the stars”. The river is in the Appalachians, passing through Virginia and West Virginia., 15:D - Titisee is in the Black Forest

Scores

1. 12 and above.

   A rip-roaring success. Take a bow, er, dip!

2. 7 and above.

   Not too shabby! Have a ripple of applause.

3. 0 and above.

   Eau dear. You'll make a bigger splash in next week's Guardian Travel quiz I'm sure...