In exercise of the powers conferred by sub section 1, read with clauses a and k of sub section 2 of section 54 of the Dam Safety Act

REGD. No. D. L.-33004/99 The Gazette of India CG-DL-E-28052024-254406 EXTRAORDINARY PART III-Section 4 PUBLISHED BY AUTHORITY No. 373] NEW DELHI, TUESDAY, MAY 28, 2024/JYAISHTHA 7, 1946 NATIONAL DAM SAFETY AUTHORITY NOTIFICATION New Delhi, the 20th May, 2024. F. No. TE-32/2/2023-NDSA-MOWR.—In exercise of the powers conferred by sub-section (1), read with clauses (a) and (k) of sub-section (2) of section 54 of the Dam Safety Act, 2021 (41 of 2021), the National Dam Safety Authority, on the recommendations of the National Committee on Dam Safety, hereby makes the following regulations, namely: - 1. Short title and commencement. – (1) These regulations may be called the Surveillance, Inspection and Hydro- meteorological Station of Specified Dams Regulation, 2024. (2) They shall come into force on the date of their publication in the Official Gazette. 2. Definitions: - (1) In these regulations, unless the context otherwise requires, - (a) "Act" means the Dam Safety Act, 2021(41 of 2021); (b) "Authority" means the National Dam Safety Authority established under section 8 of the Act; (c) "section" means section of the Act. (2) Words and expressions used herein and not defined in these regulations but defined in the Act shall have the meanings respectively assigned to them in the Act. 3. Guidelines, standards and other directions for achieving the satisfactory level of dam safety assurance. (1) Every State Dam Safety Organisation, either through dam owners or by any other means, shall keep perpetual surveillance of all specified dams under their jurisdiction, to observe various anomalies including cracks in the body of the dam or abutment, unusual seepage, deflection in the dam body and any other problem related to dam or hydro-mechanical equipment, for the safety of the dam and follow the instructions in the operation and maintenance manual for the said dam. (2) Every State Dam Safety Organisation, either through dam owners or by any other means, shall carry out the following inspections, namely: - (i) pre and post-monsoon inspections shall be carried out in accordance with the provisions of sub- section (1) of section 31, and the regulations made thereunder; (ii) inspections during or after every 1 in 50-year return period flood for barrages and 1 in 100-year return period flood for dams, immediately after an earthquake which causes structural damage to the project or such natural calamities as glacial lake outburst flood, landslide lake outburst flood, avalanches shall be carried out in accordance with the provision of sub-section (2) of section 31 of the Act and the regulations made thereunder; (iii) inspection in case of any sign of distress or any unusual behaviour if noticed in the dam body or any of its appurtenant structure for whatsoever reason, shall be carried out in accordance with the provisions of sub-section (2) of section 31 of the Act and the regulations made thereunder; (iv) inspection under clauses (i), (ii) and (iii) shall be carried out in accordance with the guidelines and checklist specified under sub-section (3) of section 31 of the Act by the owners or the project authorities of the dam; (v) inspection shall be conducted before the initial filling of reservoirs in accordance with the provision of sub-section (2) of section 27 of the Act. (3) Monitoring of operation and maintenance of each specified dam shall be carried out as per the provisions of Operation and Maintenance manual of the said dam and a continuous flow of information from dam owners to State Dam Safety Organisation shall be ensured for this purpose. 4. Hydro-meteorological stations of specified dams - (1) Hydro-Meteorological Station for measuring the following inputs shall be established near dam vicinity, namely: - (i) rainfall (precipitation); (ii) water level; (iii) discharge; (iv) temperature; (v) humidity; (vi) evaporation; (vii) wind velocity and direction; and (viii) snowfall, as applicable. (2) The frequency of data measurement through the appropriate instruments shall be once a day or more depending upon the requirement, the instruments are to be placed at the dam site or at around 250 m radius from any abutment and the discharge measurement at the dam site shall be through a well calibrated rating curve which shall be updated every two years. (3) Every owner of the specified dam shall install well-designed hydro- meteorological instrumentation network for inflow forecasting and flood warning. ANIL JAIN, Chairman [ADVT.-III/4/Exty./142/2024-25] 5Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064 and Published by the Controller of Publications, Delhi-110054. Digitally signed by MANOJ KUMAR VERMA MANOJ KUMAR VERMA Date: 2024.05.28 20:54:31 +05'30'