- What is the longest river in Nepal?
A) Gandaki River
B) Karnali River
C) Koshi River
D) Bagmati River
Answer: B) Karnali River - Which river is known as the “Sorrow of Bihar” due to its frequent flooding?
A) Koshi River
B) Gandaki River
C) Bagmati River
D) Ghaghara River
Answer: A) Koshi River - Which river flows through the capital city of Nepal, Kathmandu?
A) Karnali River
B) Bagmati River
C) Seti River
D) Ghaghara River
Answer: B) Bagmati River - The Gandaki River is famous for what significant feature?
A) It is the longest river.
B) It is the only river that flows north.
C) It contains the world’s deepest gorge.
D) It has the largest hydroelectric project.
Answer: C) It contains the world’s deepest gorge. - Which river is a tributary of the Ganges?
A) Karnali River
B) Koshi River
C) Ghaghara River
D) Bagmati River
Answer: C) Ghaghara River - What is the primary source of the Koshi River?
A) Lake Rara
B) Glaciers of the Himalayas
C) Mahabharat Range
D) Tibetan Plateau
Answer: B) Glaciers of the Himalayas - The Karnali River originates from which mountain?
A) Mount Everest
B) Mount Kanjiroba
C) Annapurna
D) Dhaulagiri
Answer: B) Mount Kanjiroba - Which river is known for its white-water rafting opportunities?
A) Seti River
B) Karnali River
C) Bagmati River
D) Ghaghara River
Answer: B) Karnali River - What is the main ecological zone associated with the rivers of Nepal?
A) Desert
B) Temperate Forest
C) Tropical Rainforest
D) Alpine
Answer: C) Tropical Rainforest - Which river basin is known for its high biodiversity?
A) Koshi Basin
B) Karnali Basin
C) Gandaki Basin
D) Seti Basin
Answer: A) Koshi Basin - Which river is considered sacred by Hindus in Nepal?
A) Karnali River
B) Ghaghara River
C) Bagmati River
D) Seti River
Answer: C) Bagmati River - What is the significance of the Trishuli River?
A) It is the longest river.
B) It is a major tributary of the Koshi.
C) It is a popular site for water sports.
D) It flows through the Terai region.
Answer: C) It is a popular site for water sports. - Which river forms the boundary between Nepal and India?
A) Gandaki River
B) Koshi River
C) Kali River
D) Seti River
Answer: C) Kali River - Which river is the second largest in Nepal by discharge?
A) Koshi River
B) Karnali River
C) Gandaki River
D) Bagmati River
Answer: A) Koshi River - The Ghaghara River is a tributary of which major river system?
A) Indus River
B) Ganges River
C) Brahmaputra River
D) Yamuna River
Answer: B) Ganges River - What type of ecosystem is primarily supported by Nepal’s rivers?
A) Wetlands
B) Desert
C) Alpine tundra
D) Mangroves
Answer: A) Wetlands - Which river is often associated with the annual “Koshi Tappu Wildlife Reserve” festival?
A) Karnali River
B) Koshi River
C) Gandaki River
D) Bagmati River
Answer: B) Koshi River - The rivers in Nepal are primarily fed by what source?
A) Groundwater
B) Rainfall
C) Glacial melt
D) Lakes
Answer: C) Glacial melt - What is the primary challenge facing rivers in Nepal today?
A) Overfishing
B) Deforestation
C) Pollution
D) Drought
Answer: C) Pollution - Which river basin is known for hydropower potential in Nepal?
A) Koshi Basin
B) Gandaki Basin
C) Karnali Basin
D) All of the above
Answer: D) All of the above - The confluence of the Trishuli and Ghaghara rivers is known as what?
A) Triveni Sangam
B) Devprayag
C) Haridwar
D) Prayag
Answer: A) Triveni Sangam - Which river is home to the famous “Karnali Fishing” sport?
A) Seti River
B) Ghaghara River
C) Karnali River
D) Bagmati River
Answer: C) Karnali River - Which river in Nepal is important for irrigation and agriculture in the Terai region?
A) Koshi River
B) Gandaki River
C) Karnali River
D) Bagmati River
Answer: A) Koshi River - The Seti River is known for its unique color due to what factor?
A) Algae
B) Sediments
C) Glacial melt
D) Pollutants
Answer: B) Sediments - Which river has the largest drainage basin in Nepal?
A) Karnali River
B) Ghaghara River
C) Koshi River
D) Bagmati River
Answer: C) Koshi River - What type of natural disaster frequently affects the Koshi River basin?
A) Earthquakes
B) Flooding
C) Landslides
D) Droughts
Answer: B) Flooding - What is the main purpose of the Koshi Barrage?
A) Tourism
B) Fishing
C) Irrigation and flood control
D) Hydroelectric power generation
Answer: C) Irrigation and flood control - The Ghaghara River is an important waterway for which of the following?
A) Trade
B) Transportation
C) Fishing
D) All of the above
Answer: D) All of the above - The Sunkoshi River is known for its connection to which major river?
A) Koshi River
B) Gandaki River
C) Karnali River
D) Bagmati River
Answer: A) Koshi River - Which river is considered the lifeline of western Nepal?
A) Seti River
B) Ghaghara River
C) Karnali River
D) Bagmati River
Answer: C) Karnali River
| River Name | Origin | Length | Major Tributaries | Importance |
| Karnali River | Mount Kanjiroba | 507 km | Bheri, Seti | Longest river in Nepal; important for hydroelectricity and fishing. |
| Koshi River | Glaciers of the Himalayas | 507 km | Sun Kosi, Tamur, Arun | Known as the “Sorrow of Bihar” due to flooding; major river system for irrigation. |
| Gandaki River | Annapurna range | 335 km | Marshyangdi, Madi | Contains the world’s deepest gorge (Kali Gandaki); important for agriculture. |
| Bagmati River | Shivalk Hills | 507 km | Bishnumati, Dhobi Khola | Sacred river in Hinduism; flows through Kathmandu. |
| Seti River | Himalayas | 60 km | Upper Seti, Lower Seti | Known for its scenic beauty and white-water rafting opportunities. |
| Trishuli River | Glaciers of Langtang range | 120 km | Bhote Kosi, Manju Khola | Popular for white-water rafting; provides irrigation to nearby areas. |
| Mahakali River | Glacier of the Himalayas | 335 km | Kali River, Sari River | Forms a natural boundary between Nepal and India. |
| Rapti River | Churia Hills | 200 km | Bheri River | Important for irrigation and biodiversity; flows through Chitwan National Park. |
| Bheri River | Dhaulagiri range | 200 km | Khare, Jhimruk | Supports agriculture in the mid-west region of Nepal. |
| Sun Kosi River | Tibet | 90 km | Bhote Kosi | Known for its beautiful scenery; popular for trekking and rafting. |