- Which river is the longest in Croatia?
- A) Drava River
- B) Sava River
- C) Kupa River
- D) Una River
- The Sava River flows into which major body of water?
- A) Danube River
- B) Adriatic Sea
- C) Black Sea
- D) Aegean Sea
- Which river forms part of the border between Croatia and Bosnia and Herzegovina?
- A) Kupa River
- B) Una River
- C) Cetina River
- D) Drava River
- The Drava River is known for its significant role in what activity?
- A) Mining
- B) Urbanization
- C) Hydroelectric power generation
- D) Tourism
- What is the main tributary of the Sava River?
- A) Kupa River
- B) Drava River
- C) Una River
- D) Cetina River
- The Kupa River is a significant source of water for which city?
- A) Rijeka
- B) Karlovac
- C) Split
- D) Zagreb
- Which river is famous for its picturesque canyon and rich biodiversity?
- A) Kupa River
- B) Cetina River
- C) Sava River
- D) Drava River
- What major feature is found along the course of the Drava River?
- A) Mountains
- B) Lakes
- C) Floodplains
- D) Deserts
- Which river is known for its crystal-clear waters and is a popular spot for kayaking?
- A) Sava River
- B) Cetina River
- C) Kupa River
- D) Una River
- The Mrežnica River is famous for its numerous what?
- A) Rapids
- B) Waterfalls
- C) Dams
- D) Bridges
- Which river flows through the city of Zagreb?
- A) Kupa River
- B) Sava River
- C) Drava River
- D) Una River
- What is a significant environmental concern for the rivers in Croatia?
- A) Pollution
- B) Deforestation
- C) Flooding
- D) Drought
- The Una River is primarily located in which part of Croatia?
- A) Eastern
- B) Southern
- C) Northwestern
- D) Central
- Which river is known for its vibrant ecosystems and is protected as a national park?
- A) Sava River
- B) Kupa River
- C) Krka River
- D) Drava River
- Which river is a popular destination for fishing enthusiasts?
- A) Sava River
- B) Cetina River
- C) Drava River
- D) Mrežnica River
- The Krka River flows into which body of water?
- A) Adriatic Sea
- B) Šibenik Bay
- C) Danube River
- D) Kvarner Gulf
- What is the main economic activity associated with the Sava River?
- A) Mining
- B) Shipping and transportation
- C) Tourism
- D) Agriculture
- Which river is known for its role in forming the border with Slovenia?
- A) Kupa River
- B) Drava River
- C) Sava River
- D) Una River
- The source of the Cetina River is located in which geographical feature?
- A) Plains
- B) Mountains
- C) Hills
- D) Valleys
- Which river has the largest drainage basin in Croatia?
- A) Sava River
- B) Drava River
- C) Kupa River
- D) Una River
- What type of fish is commonly found in the Sava River?
- A) Salmon
- B) Catfish
- C) Trout
- D) Bass
- Which river is famous for its thermal springs?
- A) Drava River
- B) Kupa River
- C) Cetina River
- D) Sava River
- Which river is primarily known for its recreational opportunities, such as rafting?
- A) Cetina River
- B) Sava River
- C) Kupa River
- D) Una River
- The Una River is a tributary of which major river system?
- A) Sava River
- B) Drava River
- C) Kupa River
- D) Danube River
- Which river’s basin is a UNESCO World Heritage site?
- A) Sava River
- B) Kupa River
- C) Krka River
- D) Una River
- The Sava River is primarily used for what purpose in Croatia?
- A) Fishing
- B) Transportation
- C) Agriculture
- D) Tourism
- Which river is known for its picturesque waterfalls and canyons?
- A) Kupa River
- B) Krka River
- C) Drava River
- D) Sava River
- The Mrežnica River is a tributary of which larger river?
- A) Sava River
- B) Korana River
- C) Una River
- D) Drava River
- Which river has a significant impact on the local agriculture of the regions it flows through?
- A) Sava River
- B) Cetina River
- C) Kupa River
- D) Una River
- The Krka River is especially famous for its what?
- A) National park
- B) Urban areas
- C) Industrial use
- D) Deforestation
| River Name | Length (km) | Region | Major Features | Notable Locations |
| Sava River | 945 | Central Croatia | Longest river; important for navigation and agriculture | Zagreb, Slavonski Brod |
| Drava River | 725 | Northern Croatia | Known for hydroelectric power; significant ecosystems | Osijek, Đakovo |
| Kupa River | 296 | Southwestern Croatia | Forms part of the border with Slovenia; popular for recreation | Karlovac, Sisak |
| Una River | 212 | Northwestern Croatia | Famous for its natural beauty and biodiversity | Bihać, Una National Park |
| Cetina River | 105 | Southern Croatia | Renowned for its canyons and waterfalls; popular for rafting | Omiš, Cetina Canyon |
| Mrežnica River | 64 | Central Croatia | Known for its waterfalls; popular for kayaking and swimming | Duga Resa |
| Korana River | 106 | Central Croatia | Flows through national parks; popular for swimming and fishing | Barac Caves, Rastoke |
| Neretva River | 225 | Southern Croatia | Flows into the Adriatic Sea; known for its delta | Metković, Neretva Delta |
| Krka River | 72 | Central Croatia | Famous for its national park and waterfalls | Skradin, Krka National Park |
| Tamaris River | 30 | Istria | Smaller river known for its scenic views | Istria region |