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Geography

River Systems of Rajasthan

Physiography, Rivers, and Lakes of Rajasthan

Paper II · Unit 3 Section 4 of 13 0 PYQs 47 min
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River Systems of Rajasthan

Rajasthan's rivers are classified into three drainage basins based on their final destination:

  1. Arabian Sea Drainage: Luni, Sabarmati, Mahi, West Banas
  2. Bay of Bengal Drainage: Chambal, Banas, Kalisindh, Parvati, Gambhir, Banganga, Ruparail
  3. Inland Drainage: Ghaggar, Kantli, Saraswati (dry), Kakni (Machhad)

3.1 Arabian Sea Drainage

Luni River

The Luni (Sanskrit: Lavanavari — "salt river") is the most important river of western Rajasthan.

  • Origin: Pushkar hills (also called Nag Pahar / Ajmer hills), near Pushkar town, Ajmer district, at ~550 m elevation
  • Length: 495 km total; about 330 km within Rajasthan; drains into the Rann of Kutch (Gujarat)
  • Nature: Seasonal — flows during monsoon (July–September); highly saline downstream of Balotra (Barmer), hence called the "salt river"
  • Tributaries (left bank): Jawai, Bandi, Lila, Sukri
  • Tributaries (right bank): Jojri, Mithri, Sagi
  • Jawai Dam: Located at Sumerpur (Pali), built 1946; capacity 28.87 MCM; supplies drinking water to Pali and Jodhpur; the only major dam on the Luni system; known as "Marwar's lifeline"
  • Significance: Drains 37,363 sq km of arid western Rajasthan. The Luni basin cities — Jodhpur, Pali, Barmer, Jalore — depend heavily on it. Below Balotra the salinity renders it unsuitable for irrigation — a key geographic fact RPSC tests.

Sabarmati River System

  • Originates in Udaipur district (Dhebar Lake / Jaisamand) hills; flows southward through Gujarat
  • Within Rajasthan: Only the upper headwaters; the Wakal, Sei, and Harnav streams contribute to the Sabarmati from Rajasthan's Aravalli region
  • Total Sabarmati length: 371 km; Rajasthan contribution: ~45 km of upper basin
  • The Manak Sabarmati project (Udaipur) harnesses upper Sabarmati waters

Mahi River

  • Originates in the Vindhya Range (MP), enters Rajasthan at Khanapur (Banswara district), exits at Chamanpura (Dungarpur) into Gujarat
  • Within Rajasthan length: ~171 km
  • Drains the Vagad region (Banswara, Dungarpur, Pratapgarh)
  • Mahi Bajaj Sagar Dam: Located at Borkheda (Banswara); a joint project of Rajasthan and Gujarat; installed capacity 140 MW (Rajasthan's share); completed 1972
  • Tributaries in Rajasthan: Som, Jakham, Anand, Moran, Chap

West Banas

  • Not to be confused with the (East) Banas of Bay of Bengal drainage
  • Originates in Sirohi hills; flows through Sirohi into Gujarat; length within Rajasthan ~45 km; small seasonal stream

3.2 Bay of Bengal Drainage

These rivers drain the eastern Rajasthan plains and ultimately join the Yamuna or Chambal, which merge with the Ganga to reach the Bay of Bengal.

Chambal River

The Chambal is Rajasthan's most significant river — the only perennial river entirely dependent on natural flow (no major recharge from wells or canals), and the longest river with a substantial stretch through Rajasthan.

  • Origin: Janapav Hill (Vindhya Range), Mhow (Indore district, MP), at ~884 m elevation
  • Total length: 966 km; flows through MP → Rajasthan → UP → meets Yamuna near Etawah (UP)
  • Length in Rajasthan: ~322 km (forms Rajasthan–MP border for ~252 km, then flows through Kota district)
  • Drainage area: ~1,43,219 sq km (largest river basin in Rajasthan)
  • Tributaries joining in Rajasthan:
    • Right bank: Banas (major), Mej, Kali Sindh, Parwan, Parvati
    • Left bank: Kunal, Seep
  • Chambal Valley Development Project (Tri-State): Joint project of Rajasthan, Madhya Pradesh, and Uttar Pradesh
Dam Location Installed Capacity Type
Gandhi Sagar Mandsaur, MP 115 MW Masonry gravity dam
Rana Pratap Sagar Rawatbhata, Chittorgarh 172 MW Masonry dam
Jawahar Sagar Kota-Bundi border 99 MW Masonry dam
Kota Barrage Kota city Navigation/irrigation Barrage

Source: Water Resources Department, Rajasthan; CVPDC Annual Report

  • Chambal Ravines: The Chambal's entrenched meanders in the Kota–Sawai Madhopur–Dholpur belt have created the most extensive ravine (gully erosion) landscape in India. Covering approximately 3,690 sq km in Rajasthan, these badlands have historically been the hideout of dacoits. The National Chambal (Gharial) Wildlife Sanctuary (5,400 sq km, 1979) in the Chambal river course protects gharials, gangetic dolphins, and mugger crocodiles.
  • Economic significance: Kota Barrage irrigates ~2.6 lakh hectares (Kota, Bundi, Baran, Jhalawar districts). Chambal hydropower is Rajasthan's oldest hydroelectricity source.

Banas River

The Banas (Sanskrit: Van-Asa — "hope of the forest") is the longest river flowing entirely within Rajasthan.

  • Origin: Khamnor hills (Rajsamand district), at ~1,420 m elevation (near Kumbhalgarh)
  • Total length: 480 km; drains into Chambal at Rameshwar Ghat (Sawai Madhopur)
  • Drainage area: ~45,833 sq km
  • Major tributaries: Berach, Kothari, Khari, Mashi, Dhil, Morel, Dai, Sohadra
  • The Berach river (originates near Udaipur; flows through Chittorgarh) carries significant cultural significance (Mewar region) and joins Banas near Bhilwara
  • Bisalpur Dam: Located on Banas river, Tonk district; built 1999; largest dam in Rajasthan by water storage capacity (38.76 TMC = 1,098 MCM); primary drinking water source for Jaipur, Ajmer, Tonk — supplies water to ~100 cities and towns; also used for irrigation
  • Morel Dam: Dausa district; built 1966; supplies water to Jaipur rural areas
  • Significance: The Banas Plain (Jaipur–Ajmer–Tonk–Sawai Madhopur) is one of Rajasthan's most fertile agricultural zones.

Kalisindh River

  • Originates in Dewas district (MP); enters Rajasthan at Bin village (Jhalawar)
  • Length in Rajasthan: ~145 km; joins Chambal near Nonera (Kota)
  • Tributaries: Parwan, Niwaj, Ahu
  • Harish Chandra Sagar Dam: On Kalisindh, Jhalawar
  • The Kalisindh-Parvati link is part of the river interlinking scheme (National Perspective Plan)

Parvati River

  • Originates in Sehore (MP); enters Rajasthan at Dhaulpur (Baran district)
  • Length in Rajasthan: ~105 km; joins Chambal near Pali village (Kota)
  • Parvati Dam: Located in Baran district

Gambhiri River

  • Originates in the Aravalli near Chittorgarh; flows east; length ~150 km
  • Joins Yamuna (not Chambal) in UP via MP
  • Moral Dam (Chittorgarh) on Gambhiri: part of the Chittorgarh irrigation system

Banganga River

  • Originates in Bairath hills (Jaipur district), near Viratnagar
  • Length ~240 km; flows east through Dausa, Bharatpur; drains into Yamuna (UP)
  • The Banganga-Gambhiri rivers define the northernmost Bay of Bengal drainage in Rajasthan

Ruparail / Barah River

  • Originates near Thanaghazi (Alwar district)
  • Length ~180 km; joins Yamuna in UP near Bharatpur
  • Passes through Keoladeo Ghana National Park (Bharatpur) — world-famous bird sanctuary (Ramsar site, UNESCO World Heritage); seasonal flooding from Ruparail and Gambhir rivers creates the wetland habitat

3.3 Inland Drainage System

Inland drainage rivers lose their water to sands or deserts before reaching the sea. This system covers approximately 60% of Rajasthan's total area — the single largest drainage type in the state.

Ghaggar River

  • Originates in Shivalik Hills (Himachal Pradesh), flows through Punjab/Haryana → enters Rajasthan at Tibi (Hanumangarh district)
  • Ancient significance: Identified by some scholars as the Vedic Saraswati River; the Saraswati-Drishadvati confluence region near Pilibanga (Hanumangarh) was the site of major Indus Valley Civilization settlements — cross-reference Topic #87 (Geological Structure) and Indus Civilization archaeology
  • After reaching Hanumangarh, it terminates in the Thar sands near Anupgarh (Sri Ganganagar) — a seasonal river that floods the area in wet years (Mann territory, locally known as "Harika" flood plains)
  • The Ottu barrage (Haryana) regulates Ghaggar flows entering Rajasthan; the Indira Gandhi Canal now brings more reliable water to this region, reducing dependence on the erratic Ghaggar

Kantli River

  • Entirely within Rajasthan; originates in Sikar district (Khanda hills)
  • Length ~100 km; drains into desert sands of Jhunjhunu; inland drainage
  • Significance for archaeology: The Kantli basin hosts the Ganeshwar site (Sikar), one of the oldest copper-using cultures in India (~2,800 BCE), predating the Harappan Civilization; the "mother of Harappan Civilization" theory references this copper-tool culture

Kakni River / Machhad

  • Originates near Jaisalmer; length ~17 km; terminates in Bap village (Jodhpur) — extremely short inland drainage
  • Also called Machhad locally
  • The surrounding area is ecologically sensitive — flamingo nesting grounds around the Khichan village area (Phalodi, Jodhpur)

Saraswati

  • Predominantly dry/underground in Rajasthan; the Saraswati Heritage Development Board (Rajasthan government, established 2012) works on revival through aquifer recharge and archaeological documentation in Jaisalmer–Barmer–Hanumangarh corridor
  • No perennial surface flow in Rajasthan