Brief Summary of Lingampalli Reservoir Project
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Brief Summary of Lingampalli Reservoir Project Introduction: A lift irrigation scheme namely, J. Chokkarao Godavari Lift Irrigation Scheme (JCRGLIS) now renamed and called as J. Chokkarao Devadulu Lift Irrigation Scheme (JCRDLIS) was formulated and executed. The scheme envisages lifting of water from Godavari River near Gangaram village, district Warangal from El. 70.00 M. to El. 470 M to irrigate 2.62 lakh ha in upland drought prone areas of erstwhile districts Karimnagar, Warangal, Nalgonda and Medak by lifting about 38.16 TMC of water from river Godavari. The Lift Irrigation Scheme has inadequacy of sufficient balancing reservoirs dedicated to the scheme, which can store the water during monsoon season and/ or low demand period and serve the scheme during the remaining period of the demand. The storage provided in the current scheme was not sufficient and hence additional storage capacity is to be created to serve the command area, drinking water and industrial by absorbing fluctuations in availability of water. Background & Objectives: In this regard, in order to utilize the diverted water of Godavari River, it is essential to have sufficient storage in the scheme, because there is going to be mismatch between demand and supply, which is highly skewed in the present case. As such, the provision of sufficient storage has been proposed in the system to have operational flexibilities to provide the water as per the requirement. There are existing reservoirs in the system having overall capacity of less than 10 TMC, which will only act as transit storage for balancing purpose, since there is already prior commitment for these storages. Therefore, the need for creation of additional storage to the tune of about 75% of the overall requirement was felt necessary, since there is a high gap between demand and supply and also the command area is not distributed uniformly. It is in this context a high capacity artificial reservoir having capacity of about 25-30% of overall water demand has been kept at higher elevation to act as a mother reservoir and also as a carryover storage in case there is a shortage in the system. From this point of view, Lingampalli Reservoir Project having capacity of about 10.78 TMC with less submergence area has been proposed in the present scheme which is located at 17º56′N, 79º17′E near Malkapur Village, Chilpur Mandal in Jangaon District (erstwhile Warangal Dist.) of Telangana State in order to have operational flexibilities to provide the water as per the requirement in the current Devadula Lift Irrigation System. Water with a discharge of about 39.26 Cumecs is drawn from existing Dharmasagar Reservoir through Approach Channel of about 1.25Km enters the surge pool of the proposed Lift System. Water from here is lifted from El.297m to El.424m and allowed to flow through Pumping Main of 17.0Km (3.0mDia, 3nos), fills the proposed Lingampalli Reservoir in 90days. The package wise components are detailed below. Package-I Construction of Head Regulator near Dharmasagar Reservoir. Construction of Approach Channel for a length of 1.250 Km from Dharmasagar tank to proposed pump house. Construction of DLRB on Approach Channel. Construction of Pump house near Dharmasagar (V). Laying of 3.00 m Dia Pipeline (3 rows) from Dharmsagar pumphouse to Lingampalli Reservoir near Malkapur (V) for a length of 17.00 Kms. Package-II Formation of Earthen Bund (BUND CH. FROM KM 0.00 TO KM. 7.700). Formation of Concrete Dam of 200 m from Km 5.925 to Km 6.125. Construction of Cross Regulator on Flood Flow Canal. Construction of Escape Regulator for Chilpur Vagu. Construction of Viaduct across Chilpur Vagu. Salient Features: 1 Name of the Project Lingampalli Reservoir Project 2 Type of Project Irrigation/Drinking Water 3 Location of the Reservoir 17º 56′ N, 79º 17′ E, Malkapur Village,Chilpur Mandal, Jangaon District, Telangana State. 4 Toposheet No. E 44 N5 (New), 56 O5 (Old). 5 Purpose of scheme Storage/Balancing Reservoir 6 Source of Supply Godavari Reservoir through Dharma Sagar Tank 7 Details of the Reservoir a) FRL El. 420 m b) MDDL El. 388 m c) TBL El. 424 m d) Bed Level El. 376 m e) Max Height of the dam 48 m 8 Capacity of Reservoir 10.78 TMC 9 Period for filling the reservoir 3 Months (during rainy season) 10 Length of Earthen Dam to create 7500 m the reservoir 11 Length of Concrete Dam 200 m 12 Total Length of the Dam 7700 m 13 Sluices in concrete Dam a) 2 x 2 m (Irrigation Sluice) Block 5 with 35 m head b) 4 x 4 m (Scour Sluice) Block 5 with 35 m head 14 Submergence Area 1786 Ha / 4411 Acres 15 No. of Villages under Submergence 1 no. Lingampalli (V), 6 nos. of Hamlets of Lingampalli, 1 no. of Hamlet of Malkapur 16 Location of Pump House Near Dharma Sagar Reservoir 17 Design Discharge 39.26 cumecs 18 No. of Pumping Days and Hours 90 days and 24 hours 19 No. of Pumps/motors 3 nos. 20 Static Head 129 m 21 Power Requirement 3 x 26 MW = 78 MW 22 Installed Capacity of Pumping Station 78 MW 23 Energy Required 143.05 MU 24 Annual Energy Cost (Rs.) Rs. 71.53 Crore 25 Length of Conveyance System a) Approach Channel 1.25 Km (Bw – 9 m, FSD – 3m, FB -1 m) b) Pipeline from Dharma Sagar to 3 Nos. Pipes of 3.0 m diameter each about Lingampalli Reservoir a length of 17.0 Km. 26 Total Project Cost - Administrative Rs. 3226.40 Crores. Approval 27 Estimated Completion Time 2.5 Years Submergence under Reservoir: A total land of about 1786 Ha is under submergence at FRL 420 m and 1 No. of village (Lingampalli Village) and 7 Nos. of Hamlets are also under submergence due to construction of this reservoir. There is no forest area under submergence. The total number of families displacing are about 842 Nos with a population of 4130. Particulars of villages 1.Lingampalli (V) coming under Hamlets of Lingampalli(V) submergence a) Kommugutta Colony b) Panchangambanda Thanda, c) vepulabodaThanda d) Devoji Thanda e) Ratna Nayak Thanda f) Bodabanda Thanda 2. Kothapally (Hamlet of Malkapur) .