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 Luni Basin

Luni basin

Total Catchment Area
37,363 Km2
Total Culturable Area 
1.42 Mha
Total Culturable Command Area
248,706 ha
with basin water
- Existing Projects  164,617 ha
- Ongoing Projects 2,514 ha
- Proposed Projects 8,415 ha
with imported water
- Proposed from share of Narmada  73,160 ha
Average Irrigated Area
0.48 Mha
Total Mean Annual Surface Water Potential
790 Mm3/year
Share of Rajasthan to import into this basin
747 Mm3/year
- Utilised 415 Mm3/year
Total Ground water Annual Recharge
1,194Mm3
- Utilised 1,370Mm3/year
Water Transfers
- From Outside Rajasthan 747 Mm3/yr

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1. Introduction
Luni River Basin is located in south-western Rajasthan, between latitudes 23o41' and 27o05' and longitudes 71o04' and 74o42'. It is bounded by the arid western districts (The Outside Basins) in the west, by Banas Basin in the east, Shekhawati Basin in the north, and Sukli and West Banas Basins in the south.

The Basin extends over parts of Ajmer, Barmer, Jalore, Jodhpur, Nagaur, Pali, Rajsamand, Sirohi and Udaipur Districts.

The total catchment area of the Basin is 37,363 km2 according to the 1:250,000 scale topographical maps published by the Survey of India.

Luni River Basin lies to the west of the Aravali hills and forms part of the mid-west alluvial plain. Orographically, the eastern part of the Basin is marked by hilly terrain belonging to the Aravali chain. West of the hills lies a narrow alluvial plain which gently slopes westwards. Luni River originates in Ajmer and flows to the Rann of Kutch in Gujarat State.

2. Drainage
River Luni originates in the western slopes of the Aravali range at an elevation of 550 m, near Ajmer. After flowing for about 495 km in a south-westerly direction in Rajasthan, the river disappears in the marshy land of Runn of Kutch.

The water of River Luni is sweet up to Balotra and becomes more and more saline further downstream. The main tributaries of Luni on the left are Sukri, Mithri, Bandi, Khari, Jawai, Guhiya and Sagi, whereas only Jojari river joins it on the right side.

3. Rainfall
The mean annual rainfall over the Luni Basin was computed as 320 mm, of which about 97% falls during the four Monsoon months (June-September).

4. Existing Surface water Projects
There are 2 Major (Sardar Samand and Jawai dam), 9 Medium and 344 Minor irrigation projects in the Luni River Basin, as well as some small irrigation systems (covering less than 20 ha) constructed and operated by Panchayat Samities (PS).

5. Ongoing Surface Water Projects
4 irrigation projects, with a total live storage capacity of 11 Mm3, are under construction in the Luni Basin. An additional area of 2514 ha will be irrigated on completion of these projects.

6. Proposed Surface Water Projects
25 irrigation projects, with a total live storage capacity of 57 Mm3, have been proposed by the ID in this Basin. An additional area of 8399 ha will be irrigated on completion of these projects.


 


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