Lower Manair Dam

Lower Manair Dam
Lower Manair Reservoir
Location of Lower Manair Dam in Telangana Show map of Telangana Lower Manair Dam (India) Show map of India
Official name	Lower Manair Dam
Location	Karimnagar district, Telangana, India
Coordinates	18°23′59″N79°7′52″E / 18.39972°N 79.13111°E / 18.39972; 79.13111
Opening date	1985;39 years ago (1985)
Owner(s)	Government of Telangana
Dam and spillways
Impounds	Manair River
Height	41 metres (135 ft) from river level
Length	10,741 metres (35,240 ft)
Reservoir
Creates	Lower Manair Reservoir
Total capacity	680,137,000 m3 (551,396 acre⋅ft) (24.02 tmc ft)
Active capacity	621,000,000 m3 (503,453 acre⋅ft) (21.9 tmc ft) [1]
Catchment area	6,648 square kilometres (2,567 sq mi)
Surface area	81 km2 (31 sq mi)

Lower Manair Dam also known as LMD ^[2] was constructed across the Manair River, at Alugunur village, Thimmapur mandal, Karimnagar District, in the Indian state of Telangana during 1974 to 1985. It provides irrigation to a gross command area of 163,000 hectares (400,000 acres). ^[3]

Location

The Lower Manair Dam is located on the Manair River at 18°24' N latitude and 79° 20' E longitude in Karimnagar District at Km.146 of Kakatiya Canal. The Manair River is a tributary of the Godavari River and the dam is built across the river at the confluence with Mohedamada River. The dam drains a catchment area of 6,464 square kilometres (2,496 sq mi) which includes 1,797.46 square kilometres (694.00 sq mi) of free catchment and the balance is intercepted catchment. ^{[4] [5]} Karimanagar town is 6 kilometres (3.7 mi) away from the dam. ^[6]

In the vicinity of the LMD which is the only place of recreation for the people of Karimnagar, in the light of recent drowning incidents and the insecurity created by hooligans, security measures have been stepped up. ^[7]

Features

Lower Manair Dam's construction was started in 1974 and commissioned in 1985. It is an Earth cum Masonry dam. The dam height above the deepest foundation is 41 metres (135 ft); the maximum height of the earth dam is 88 feet (27 m). The dam length is 10,471 metres (34,354 ft), top width is 24 feet (7.3 m). It has a volume content of 5.41 million cum with a reservoir water spread area of 81 square kilometres (31 sq mi) at FRL of 280 m (920 ft). The gross storage capacity of the reservoir is 680 million cubic meters and the effective storage capacity is 621 million cubic meters (Mcm). The spillway is designed for discharge of capacity 14,170 cubic metres (500,000 cu ft)/ second (and is controlled by 20 gates ^[6] of 15.24 by 7.31 metres (50.0 ft × 24.0 ft) size, ^[5] while the maximum observed flood discharge is reported to be 9,910 cubic metres (350,000 cu ft)/second. ^{[4] [8]}

The storage behind the dam serves as a balancing reservoir for the Kakatiya Canal and regulates flow for irrigation. ^[9] The command area for irrigation is 163,000 hectares (400,000 acres).

The water quality status of the Lower Manair Reservoir was studied from September 2009 to August 2010 for the physico- chemical parameters such as water temperature, pH, turbidity, transparency, total dissolved solids, total hardness, chlorides, phosphate, nitrates, dissolved oxygen (DO) and biological oxygen demand (BOD). The results indicated that all parameters of water quality were within permissible limits and it was concluded that the water in the reservoir was fit for use for irrigation, drinking water supply and pisciculture. ^[10]

Reservoir fisheries

Studies were conducted in the LMD reservoir from June 2013 to May 2014 to identify the larvivorous activity of fishes. On the basis of morphometric and meristematic characters, the 58 fish species are identified in the reservoir. Also reported were 53 ornamental fish species comprising eight orders; of these 23 species belong to cypriniformes order. Awaous grammepomus, also called Scribbled goby was also identified. ^[2]

See also

• Sriram Sagar Project
• SRSP Flood Flow Canal
• Mid Manair Dam
• Upper Manair Dam
• Sripada Yellampalli project
• Nizam Sagar
• Kaddam Project
• Pranahita Chevella
• Alisagar lift irrigation scheme
• Sri Komaram Bheem Project
• Icchampally Project

References

1. "India: National Register of Large Dams 2012" (PDF). Central Water Commission. Archived from the original (PDF) on 20 August 2014. Retrieved 26 August 2014.
2. "Rare fish species found at Lower Manair Dam in Karimnagar (reported from Deccan Chronicle". Seafood Solutions. 20 November 2011.
3. Howard White (2008). An Impact Evaluation of India's Second and Third Andhra Pradesh Irrigation Projects: A Case of Poverty Reduction with Low Economic Returns. World Bank Publications. pp. 13–. ISBN   978-0-8213-7543-3.
4. "Lower Manair Dam". National Informatics Center.
5. "Major Water Resources Development Projects in the Godavari Basin Lower Manair Reservoir". Hydrology and Water Resources Information System for India.
6. "Lower Manair Dam". Department of Tourism, Government of Telangana.
7. "Authorities step up vigil at Lower Manair Dam". The Hindu. 27 May 2015.
8. "National Register of Large Dams" (PDF). Andhra Pradesh Sr. no. 121. Central Water Commission. Archived from the original (PDF) on 20 August 2014. Retrieved 26 August 2014.
9. "Sriramsagar Project Stage 1". Official web site of Government of Andhra Pradesh.
10. Medudhula, Thirupathaiah; Ch., Samatha; Chintha, Sammaiah (2012). "Analysis of water quality using physico-chemical parameters in lower manair reservoir of Karimnagar district, Andhra Pradesh". International Journal of Environmental Sciences.