Dhansiri River
| Dhansiri | |
|---|---|
 Dhansiri river near Golaghat | |
  Mouth of Dhansiri river in Assam, India  Dhansiri River (India) | |
| Location | |
| Country | India |
| Location | Assam, Nagaland |
| Physical characteristics | |
| Source | |
| • location | Laisang Peak (Nagaland) |
| Mouth | |
• location | Brahmaputra River |
| Length | 352 km (219 mi) |
The Dhansiri is an Indian river of Golaghat District of Assam and the Chümoukedima District and Dimapur District of Nagaland. It originates from Laisang peak of Nagaland. It flows through a distance of 352 kilometres (219 mi) from south to north before joining the Brahmaputra on its south bank. Its total catchment area is 1,220 square kilometres (470 mi2).[1]
Etymology
[edit]The Dhansiri is also known as Dima in Dimasa usage; Edward Gait noted that Dima, meaning "big river", was used particularly for the Dhansiri, while the Ahoms referred to the river as Nam-tima.[2][3] The city Dimapur, capital of the Dimasa Kingdom, was derived from the Dhansiri river. The compound word is derived from the Dimasa Kachari words: di (water), ma (big), and pur (settlement).[4]
Former course
[edit]Geomorphological evidence indicates that the lower Dhansiri formerly followed a substantially different course. Sarma and Sharma describe the Gelabil as a nearly east–west, slightly sinuous tributary of the South Dhansiri. In the earlier drainage configuration, immediately after receiving the Gelabil, the Dhansiri turned west and flowed along the channel now occupied by the Mora Dhansiri through Kaziranga National Park.[5]
At that time, the present north-westward lower course of the Dhansiri between Kurabahi and Dhansirimukh, where it now joins the Brahmaputra, did not exist. Sarma and Sharma proposed that tectonic movement along the Bomdila Fault caused subsidence east of the fault, obstructing the river's westward course and producing an avulsion into its present north-westward alignment. The abandoned western channel survives as the Mora Dhansiri.[5]
Geography
[edit]While flowing as the boundary between Karbi Anglong and Nagaland, it flanks a large wilderness very rich in wildlife. On one side is the Dhansiri Reserved Forest and on the other Intanki National Park.[6]
It has several types of important wood bearing trees along its bank like Intanki Forest.[7] Dhansari river along with Kapili by headward erosion has completely isolated the Mikir hills from the Peninsular plateau. There are numerous perennially waterlogged, swampy regions locally known as bils associated with this river.
Fishes
[edit]A fish survey conducted in 2011-12 found 34 species of fish belonging to five orders, thirteen families, and 24 genera. Seventeen species of Cypriniformes were found, followed by eight species of Siluriformes.[8] The Dhansiri river in Dimapur has freshwater, semi torrent, hill stream and ornamental fish species.[9]
See also
[edit]References
[edit]- ↑ "Geography of Golaghat". Government of Assam. Archived from the original on 6 January 2009. Retrieved 21 December 2007.
- ↑ Gait, Edward Albert (1906). A History of Assam. Calcutta: Thacker, Spink & Co.
- ↑ Borua, Gopal Chandra. Ahom-Assamese-English dictionary (PDF). Calcutta. p. 40.
- ↑ Bathari, Uttam (2014). Memory History and polity a study of dimasa identity in colonial past and post colonial present (Ph.D.). Gauhati University. p. 17-18. hdl:10603/115353.
- 1 2 Sarma, Jogendra Nath; Sharma, Sangeeta (2018). "Neotectonic activity of the Bomdila Fault in northeastern India from geomorphological evidences using remote sensing and GIS". Journal of Earth System Science. 127 (8): 113. doi:10.1007/s12040-018-1008-2.
- ↑ Choudhury, A.U. (2009). A Naturalist in Karbi Anglong. Revised 2nd edn. (1st pub. 1993), Gibbon Books, Guwahati, India. 152pp.
- ↑ "Brief documentation of Dhansiripar Block". Government of Nagaland. Archived from the original on 27 June 2007. Retrieved 21 December 2007.
- ↑ Acharjee, Biswajit Kumar; Das, Madhurima; Borah, Papari; Purkayastha, Jayaditya (1 November 2012). "Ichthyofaunal Diversity of Dhansiri River, Dimapur, Nagaland, India". Check List. 8 (6): 1163–1165. doi:10.15560/8.6.1163. Retrieved 11 June 2020.
- ↑ Acharjee, Biswajit Kumar; Das, Madhurima; Borah, Papari; Purkayastha, Jayaditya (1 November 2012). "Ichthyofaunal Diversity of Dhansiri River, Dimapur, Nagaland, India". Check List. 8 (6): 1163–1165. doi:10.15560/8.6.1163. Retrieved 11 June 2020.
External links
[edit]- Source Geography of India (Majid Hussain, TMH)
- Wetlands along the Dhansiri River channel, Assam - A paper by MK Dutta and P Kotoky
- BBC Report:Marching on to Laffan's Plain - Chapter 12 by Alan Shaw
- Xobdo.Org Encyclopaedia entry on Dhansiri
- Nagaland Pollution Control Board's NWMP entry on water quality levels of the Dhansiri River Archived 2 June 2018 at the Wayback Machine
| International | |
|---|---|
| National | |
26°40′N 93°45′E / 26.667°N 93.750°E
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