Executive Summary:
The Ministry of Jal Shakti addresses Lok Sabha questions regarding the Reservoir Storage Monitoring System (RSMS). The RSMS enhances transparency and water resource management by monitoring live storage capacity of important reservoirs and disseminating data. As of April 2025, India has 6,545 completed dam reservoirs with a total live storage capacity of 253.95 BCM. The live storage status of 161 important reservoirs, with a cumulative capacity of 182.461 BCM, is monitored by the CWC through RSMS.
Key Points / Main Content:
Reservoir Storage Monitoring System (RSMS):
* The Central Water Commission (CWC) monitors the live storage capacity of important reservoirs in India.
* Weekly bulletins are issued through the RSMS.
* Project authorities and regional CWC offices directly input data into the RSMS using allocated user IDs and passwords.
* Data analysis and bulletin generation are done via RSMS and shared with Union Ministries, State Governments, and stakeholders.
* Bulletins are publicly available on the RSMS portal to support informed decision-making.
Reservoir Statistics:
* India has 6,545 completed dam reservoirs (as of April 2025).
* The total live storage capacity of these reservoirs is 253.95 Billion Cubic Metres (BCM).
* CWC monitors the live storage status of 161 important reservoirs.
* The cumulative live storage capacity of these 161 monitored reservoirs is 182.461 BCM.
* State-wise live storage capacity details of monitored reservoirs are available in the Annexure.
Impact Analysis:
Union Ministries:
* Impact: Access to reservoir data to inform water resource management decisions.
* Action Required: Utilize RSMS data for informed policy and planning.
State Governments:
* Impact: Access to state-specific reservoir data for regional water management.
* Action Required: Use RSMS data for regional water resource planning and management.
Project Authorities and Regional Offices of CWC:
* Impact: Responsible for direct data input into the RSMS.
* Action Required: Regularly update reservoir data in the RSMS using allocated credentials.
General Public:
* Impact: Access to reservoir data for informational purposes.
* Action Required: Can view and use publicly available data on the RSMS portal.
Key Entities Referenced
Ministry of Jal Shakti: The Indian government ministry responsible for water resources.
Reservoir Storage Monitoring System (RSMS): A system used by the Central Water Commission to monitor the live storage capacity of important reservoirs in India and disseminate information.
Central Water Commission (CWC): An Indian government organization that monitors live storage capacity of important reservoirs and manages the RSMS.
National Dam Safety Authority: An Indian authority that compiled the National Register of Specified Dams.
Lok Sabha: The lower house of the Parliament of India, where the question regarding reservoir monitoring was raised.
SHRI C R PAATIL: The Minister of Jal Shakti who answered the question in Lok Sabha.
Andhra Pradesh: One of the states in India with monitored reservoirs, as listed in the annexure.
Gujrat: One of the states in India with monitored reservoirs, as listed in the annexure.
GOVERNMENT OF INDIA
MINISTRY OF JAL SHAKTI
DEPARTMENT OF WATER RESOURCES, RIVER DEVELOPMENT & GANGA REJUVENATION
LOK SABHA
STARRED QUESTION NO. *170
ANSWERED ON 31.07.2025
RESERVOIR STORAGE MONITORING SYSTEM
*170. SHRI YADUVEER WADIYAR
DR. PRASHANT YADAORAO PADOLE
Will the Minister of JAL SHAKTI be pleased to state:
(a) the manner in which the Reservoir Storage Monitoring System (RSMS) enhances transparency and
improves water resource management in the country; and
(b) the number of reservoirs currently active in the country along with their total storage capacity,
reservoir-wise?
ANSWER
THE MINISTER OF JAL SHAKTI
(SHRI C R PAATIL)
(a) to (b) : A statement is laid on the Table of the House.
1STATEMENT REFERRED TO IN REPLY TO PARTS (a) TO (b) OF STARRED QUESTION NO.
*170 TO BE ANSWERED ON 31.07.2025 IN LOK SABHA REGARDING “RESERVOIR
STORAGE MONITORING SYSTEM”
(a) Central Water Commission (CWC) monitors live storage capacity of important reservoirs of the
country and issues weekly bulletin through Reservoir Storage Monitoring System (RSMS). In RSMS, user
id and passwords have been allocated to project authorities and regional offices of CWC. They enter their
data directly by logging into RSMS. Data analysis and bulletin generation is done with the help of RSMS
and is shared with the concerned Union Ministries, respective State Governments and other stakeholders.
This bulletin is also uploaded on RSMS portal for view/use of public at large. This open access to
information supports informed decision making by various Union Ministries and States.
(b) According to the National Register of Specified Dams, compiled by the National Dam Safety
Authority in April 2025, India has a total of 6,545 completed dam reservoirs, collectively offering a live
storage capacity of 253.95 Billion Cubic Metres (BCM). The details may be accessed through following
url: "https://dharma.cwc.gov.in/dharma/public/uploads/front_upload_file/174860534186541140.pdf"
Further, as on date, live storage status of 161 important reservoirs in the country is being monitored
by CWC through RSMS. The cumulative live storage capacity of these monitored reservoirs is 182.461
BCM. State-wise live storage capacity of monitored reservoirs is given at Annexure.
***
2ANNEXURE
ANNEXURE REFERRED TO IN REPLY TO PART (b) OF LOK SABHA STARRED QUESTION
NO. *170 TO BE ANSWERED ON 31.07.2025 REGARDING “RESERVOIR STORAGE
MONITORING SYSTEM”
State-wise Live Storage Capacity of Monitored Reservoirs
S.No Name of Reservoir State Live Storage Capacity at Full Reservoir
Level (BCM)
1 Donkarayi Andhra Pradesh 0.376
2 Kandaleru Andhra Pradesh 1.792
3 Nagarjuna Sagar Andhra Pradesh 5.108
4 Pulichintala Andhra Pradesh 1.3
5 Somasila Andhra Pradesh 1.994
6 Srisailam Andhra Pradesh 6.013
7 Yeleru Andhra Pradesh 0.508
8 Khandong Assam 0.18
9 Umrong Assam 0.159
10 Badua dam Bihar 0.11
11 Chandan Dam Bihar 0.136
12 Durgavati Bihar 0.258
13 Dudhawa Chattisgarh 0.284
14 Mahanadi Chattisgarh 0.767
15 Minimata Bango Chattisgarh 3.046
16 Sikasar Chattisgarh 0.181
17 Sondur Chattisgarh 0.1796
18 Tandula Chattisgarh 0.312
19 Salaulim Dam Goa 0.227
20 Bhadar Gujrat 0.188
21 Brahmani Gujrat 0.071
22 Damanganga Gujrat 0.502
23 Dantiwada Gujrat 0.399
24 Hathmati Gujrat 0.153
25 Kadana Gujrat 1.472
26 Karjan Gujrat 0.523
27 Machchhu Gujrat 0.071
28 Machchhu II Gujrat 0.091
29 Panam Gujrat 0.697
30 Sabarmati Gujrat 0.735
31 Sardar Sarovar Gujrat 5.76
32 Shetrunji Gujrat 0.3
33 Sukhi Gujrat 0.167
34 Ukai Gujrat 6.615
35 Und I Gujrat 0.066
36 Watrak Gujrat 0.154
37 Gobind Sagar Himachal Pradesh 6.229
38 Kol Dam Himachal Pradesh 0.089
39 Pong Dam Himachal Pradesh 6.157
40 Getalsud Jharkhand 0.218
41 Konar Jharkhand 0.176
42 Maithon Jharkhand 0.471
43 Panchet hill Jharkhand 0.184
344 Tenughat Jharkhand 0.821
45 Tilaiya Jharkhand 0.142
46 Almatti Karnataka 3.105
47 Bhadra Karnataka 1.785
48 Gerusoppa Karnataka 0.13
49 Ghataprabha Karnataka 1.391
50 Harangi Karnataka 0.22
51 Hemavathy Karnataka 0.927
52 Kabini Karnataka 0.444
53 Krishnaraja Sagara Karnataka 1.163
54 Linganamakki Karnataka 4.294
55 Malaprabha Karnataka 0.972
56 Mani Dam Karnataka 0.884
57 Narayanpur Karnataka 0.863
58 Supa Karnataka 4.12
59 Tattihalla Karnataka 0.249
60 Tungabhadra Karnataka 3.276
61 Vani Vilas Sagar Karnataka 0.802
62 Idamalayar Kerala 1.018
63 Idukki Kerala 1.46
64 Kakki Kerala 0.447
65 Kallada Kerala 0.507
66 Malampuzha Kerala 0.224
67 Periyar Kerala 0.173
68 Atal Sagar Madhya Pradesh 0.835
69 Bansagar Madhya Pradesh 5.166
70 Bargi Madhya Pradesh 3.18
71 Barna Dam Madhya Pradesh 0.456
72 Gandhi Sagar Madhya Pradesh 6.827
73 Indira Sagar Madhya Pradesh 9.745
74 Kolar Dam Madhya Pradesh 0.27
75 Omkareshwar Madhya Pradesh 0.299
76 Rajghat Dam Madhya Pradesh 1.945
77 Sanjay Sarovar Madhya Pradesh 0.508
78 Tawa Madhya Pradesh 1.944
79 Barvi Dam Maharashtra 0.339
80 Bhama Askhed Maharashtra 0.217
81 Bhandardara Maharashtra 0.304
82 Bhatghar Maharashtra 0.673
83 Bhatsa Maharashtra 0.942
84 Bhima Ujjaini Maharashtra 1.517
85 Chaskaman Maharashtra 0.215
86 Darna Dam Maharashtra 0.202
87 Dhom Maharashtra 0.331
88 Dimbhe Dam Maharashtra 0.354
89 Dudhganga Maharashtra 0.664
90 Girna Maharashtra 0.524
91 Isapur Maharashtra 0.965
92 Jayakwadi Maharashtra 2.171
93 Kanher Maharashtra 0.272
94 Khadakvasla Maharashtra 0.056
95 Koyana Maharashtra 2.652
496 Manikdoh Maharashtra 0.288
97 Mula Maharashtra 0.609
98 Mulshi Maharashtra 0.572
99 Nira Deoghar Maharashtra 0.332
100 Panshet Tanajisagar Maharashtra 0.302
101 Pench Maharashtra 1.091
102 Surya Maharashtra 0.276
103 Thokarwadi Maharashtra 0.353
104 Tillari Maharashtra 0.447
105 Upper Tapi Maharashtra 0.255
106 Upper Vaitarna Maharashtra 0.331
107 Upper Wardha Maharashtra 0.564
108 Urmodi Maharashtra 0.273
109 Veer Dam Maharashtra 0.266
110 Yeldari Maharashtra 0.809
111 Umiam Meghalaya 0.142
112 Tuirial Mizoram 0.715
113 Doyang Hep Nagaland 0.535
114 Balimela Odisha 2.676
115 Hariharjhor Odisha 0.059
116 Hirakud Odisha 5.378
117 Machkund Odisha 0.893
118 Mandira Dam Odisha 0.309
119 Rengali Odisha 3.432
120 Salanadi Odisha 0.558
121 Sapua Odisha 0.006
122 Upper Indravati Odisha 1.456
123 Upper Kolab Odisha 0.935
124 Thein Dam Punjab 2.344
125 Bisalpur Rajasthan 1.076
126 Jaisamand Rajasthan 0.3134
127 Jawai Dam Rajasthan 0.193
128 Jhakam Rajasthan 0.132
129 Mahi Bajaj Sagar Rajasthan 1.711
130 Rana Pratap Sagar Rajasthan 1.436
131 Som Kamla Amba Rajasthan 0.173
132 Aliyar Tamil Nadu 0.095
133 Karayar Tamil Nadu 0.149
134 Lower Bhawani Tamil Nadu 0.792
135 Manimuthar Tamil Nadu 0.156
136 Mettur Tamil Nadu 2.647
137 Parambikulam Tamil Nadu 0.38
138 Sathanur Tamil Nadu 0.207
139 Sholayar Tamil Nadu 0.143
140 Vaigai Tamil Nadu 0.172
141 Kaddam Telangana 0.137
142 Lower Manair Telangana 0.621
143 Musi Project Telangana 0.123
144 Nizam Sagar Telangana 0.482
145 Priyadarshini Jurala Telangana 0.168
146 Singur Telangana 0.822
147 Sriramsagar Telangana 2.3
5148 Gumti Tripura 0.312
149 Jirgo Uttar Pradesh 0.147
150 Matatila Uttar Pradesh 0.707
151 Maudaha Uttar Pradesh 0.179
152 Meja Uttar Pradesh 0.299
153 Rangawan Uttar Pradesh 0.155
154 Rihand Uttar Pradesh 5.649
155 Sharda Sagar Uttar Pradesh 0.33
156 Sirsi Uttar Pradesh 0.19
157 Nanak Sagar Uttarakhand 0.176
158 Ramganga Uttarakhand 2.196
159 Tehri Uttarakhand 2.615
160 Kangsabati West Bengal 0.914
161 Mayurakshi West Bengal 0.54913
Cumulative Live Capacity of 161 Reservoirs 182.461
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