Teesta River is a 414 km (257 mi) long river that rises in the Pauhunri Mountain of eastern Himalayas, flows through the Indian states of Sikkim and West Bengal and subsequently enters Bangladesh through Rangpur division. In Bangladesh, it merges with Brahmaputra River which after meeting some other major rivers of the Bengal delta finally falls into the Bay of Bengal. It drains an area of 12,540 km2 (4,840 sq mi). In India, the Teesta flows through Mangan District, Gangtok District, Pakyong District, Kalimpong district, Darjeeling District, Jalpaiguri District, Cooch Behar districts and the cities of Rangpo, Jalpaiguri and Mekhliganj. In Bangladesh, it flows through Lalmonirhat District, Rangpur District, Kurigram District and Gaibandha District. It joins the Brahmaputra River at Phulchhari Upazila in Bangladesh. 305 km (190 mi) of the river lies in India and 109 km (68 mi) in Bangladesh. The Teesta is the largest river of Sikkim and second largest river of West Bengal after the Ganges.
Gangtok District is an administrative district of the Indian state of Sikkim. It was renamed in 2021 as a result of administrative reorganisation of the state, which also saw three subdivisions of the East Sikkim district spawned off as a separate Pakyong district.
Rangpo is a Municipal town in Pakyong district in the Indian state of Sikkim. The town borders West Bengal's Kalimpong district and is situated along the Teesta river and Rangpo River. It is the first town of Sikkim lying on National Highway 10 that links Siliguri to Gangtok. It is about 300 m above sea level with a sub-tropical climate. It is the 'Gateway to Sikkim' and all vehicles entering Sikkim have to stop at the Rangpo Police check-post. Foreign tourists require documents to enter Sikkim state and have to show them at the police check post.
The Lachung River is a tributary of the Teesta River located in the East Indian state of Sikkim. It is a chief tributary of the Teesta, which is an important river in Sikkim along with Rangeet River. The village of Lachung is perched on the craggy bank of the river approximately 23 kilometres (14 mi) from Chungthang. It is at Chungthang where the Lachung and Lachen rivers converge and give rise to the Teesta. The river is 2,500 metres (8,200 ft) above sea level.
River Rangpo is a river in the Indian state of Sikkim. A tributary of the Teesta River, it originates from Menmecho Lake near Dzuluk and flows through Rongli and Pakyong subdivision villages in Pakyong District towards Rorathang, Kumrek and Rangpo. The river demarcates the border between Pakyong District of Sikkim and Kalimpong district of West Bengal from Rorathang to Rangpo. At the town of Rangpo, the river joins river Teesta. The Rangpo is the third largest river of Sikkim after Teesta and Rangeet. Atal Setu Bridge the longest roadway bridge of Sikkim is over River Rangpo.
Singtam is a town which lies mostly in Gangtok District and partly in Pakyong District in the Indian state of Sikkim about 30 kilometres (19 mi) from the state capital Gangtok. The town lies on the banking of the rivers Teesta and Ranikhola, which join together just below the town. NH10 and NH510 meet in Singtam. The Indreni Bridge and Sherwani Bridge over the river Teesta are in the town. Singtam District Hospital, the district hospital of Pakyong District, lies at Golitar, Singtam.
Pakyong is a city and district headquarters of Pakyong district in the Indian state of Sikkim, located in the foothills of the Himalayas. Pakyong Airport is the only airport of Sikkim. The "National Research Centre for Orchids" is also located here.
Rhenock is a town, just 35 km from Pakyong City in the Pakyong district in Sikkim, India, located on the border with the Kalimpong district of West Bengal. It lies 63 kilometres east of Gangtok, and 47 kilometres north of Kalimpong on the way to Jelepla Pass at an altitude of 1,040 metres. The word Rhe-nock means Black Hill. Situated in the extreme east of Sikkim, Rhenock witnessed the establishment of the first police outpost in the state.
Ranipool is a small suburban town located in the bank of river Ranikhola at the junction of National Highway 10 and National Highway 717A in Gangtok District of the Indian state of Sikkim. It is 12 km before from Gangtok main town. It has three roads which lead to Singtam, Pakyong and Gangtok. It falls under the Gangtok Municipal Corporation. It is named after the Bridge which Connects the National highway to Gangtok and holds quite a significant role in traffic communications.
Rorathang is a town situated in the bank of Rangpo River on National Highway-717A, in Pakyong District of Sikkim, India.
Majitar is the fastest growing urban village in Pakyong District in the Indian state of Sikkim. The nearest towns are Rangpo and Singtam.
National Highway 10 is a national highway in North East India that connects Indo/Bangladesh border via Siliguri to Gangtok. It passes through the Indian states of West Bengal and Sikkim.The highway is being maintained by the National Highways and Infrastructure Development Corporation Limited (NHIDCL) from Rangpo to Ranipool in the state of Sikkim.
Rongli is a town, in the Pakyong district of the Indian state of Sikkim. It lies on the banks of Rangpo River around 22 kilometres (14 mi) from Pakyong city, the district headquarters, and around 69 kilometres (43 mi) by road south of the state capital Gangtok. Rongli is also the headquarter of Rongli Subdivision of Pakyong district. Rongli is one of the oldest market of Sikkim that lies on the trade route between Kalimpong and Tibet.
Rangpo railway station is an under-construction railway station lying on Sevoke-Rangpo Railway Line in Pakyong District of Sikkim. Its code is RNGPO. It will serve Rangpo city, and three districts of Sikkim, which are Pakyong District, Gangtok District and Mangan District. It is 38 km (24 mi) from the state capital of Gangtok and 21 km (13 mi) from Pakyong Airport. The station will consist of three platforms and four lines after completion. It is expected to be completed by December 2023.
State Bank of Sikkim (SBS) is a state owned banking institution headquartered at Gangtok, Sikkim, India. In addition to banking services, State Bank of Sikkim handles treasury functions of the Sikkim State Government.
The Sikkim Nationalised Transport Bus Terminus is one of the most important bus terminal in North Bengal. It is located on Hill Cart Road, Siliguri, Darjeeling, adjacent to the Siliguri Junction railway station, about six kilometres (3.7 mi) New Jalpaiguri Railway Station. It is operated by Transport department, Government of Sikkim. Mainly Sikkim based bus service is available on this bus terminus.
Sivok-Rangpo Railway Line is a line currently under construction to connect the Indian states of West Bengal and Sikkim. It branches out from New Jalpaiguri–Alipurduar–Samuktala Road line at Sivok railway station, Sevoke Town near Siliguri in Darjeeling district and runs through villages and towns of Kalimpong district of West Bengal and terminates in Rangpo Railway Station in Rangpo, Pakyong District of Sikkim. In the second phase of construction, this line will be extended till Gangtok, the capital of Sikkim, and later to the Nathu La pass, along the border with Tibet. This railway line lies under Northeast Frontier Railway zone Alipurduar railway division. The total length of this railway line between Sevoke and Rangpo is 44.96 Kilometres.
Pakyongdistrict is a district in the Indian state of Sikkim, administered from Pakyong. The district was formed in 2021 from three former subdivisions of the East Sikkim district, viz., Pakyong Subdivision, Rangpo Subdivision and Rongli Subdivision. The remaining Gangtok Subdivision of the former district was named as the Gangtok district, which now bounds the Pakyong district in the northwest. In addition, the district is now bounded by the Kalimpong district of West Bengal, Bhutan, China and the Namchi district of Sikkim.
Makha is an important town lying on the bank of Teesta River in Gangtok district of Sikkim, India. Makha lies between Singtam and Dikchu.
On 4 October 2023, heavy rains caused the glacial South Lhonak lake in Sikkim, a state in northeastern India, to breach its banks, causing a glacial lake outburst flood. The flood reached the Teesta III Dam at Chungthang at midnight, before its gates could be opened, destroying the dam in minutes. Water levels downstream in the River Teesta rose by up to 20 feet (6.1 m), causing widespread damage.
India 
