Full Text
REGD. No. D. L.-33004/99
The Gazette of India
CG-DL-E-24012025-260421
EXTRAORDINARY
PART III-Section 4
PUBLISHED BY AUTHORITY
No. 61]
NEW DELHI, TUESDAY, JANUARY 21, 2025/ MAGHA 1, 1946
524 GI/2025
(1)
NATIONAL DAM SAFETY AUTHORITY
NOTIFICATION
New Delhi, the 8th January, 2025
F. No. TE-32/2/2023-NDSA— In exercise of the powers conferred by clause (s) of sub-section (2) read with
section (1)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) This regulation may be called the Dam Safety Measures for Dams other
than Specified Dams Regulations, 2024.
(2) They shall come into force on the date of their publication in the Official Gazette.
2. Definitions; - (1) In this regulation, 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 a section of the Act.
(2) Thewords and expressions used herein and not defined in this regulation but defined in the Act, shall have the
same meanings respectively, as assigned to them in the Act.
3. Measures to be taken by owners for dams other than specified dams having a height less than
threemeters; -Every owner of the dam other than specified dam having a height less than three meters from the
lowest portion of the general foundation area to the top of the Dam shall undertake following measures to
ensure the safety of such dams namely; -
(i) maintain the database of such damsin the proforma as specified in ScheduleI;
(ii) earmark sufficient and specific funds for maintenance and repairs of the dam other than the specified dams
and implement the recommendations of the State Dam Safety Organisation;
(iii) comply with the quality control measures as specified in regulation 3 of the Quality Control Measures for
Dam Construction Regulations, 2024.
4. Measures to be taken by owners of dams other than specified dams having height equal to or more than
threemeters; Every owner of the dam other than specified dam having a height equal to or more than
three meters above the lowest portion of the general foundation area to the top of the Dam shall
undertake the following measures to ensure the safety of such dams namely; -
(a) maintain the database of such dams in the proforma as specified in ScheduleI;
(b) carry out at least one inspection during a year, preferably between January and Mayin the following
manner,namely:
(i) every damother than Specified Earthen or Rockfill dam inspection shall be recorded in the Form as
specified in Schedule II;
(ii) every damother than Specified Concrete or Masonry dam inspection shall be recorded in the Form as
specified in Schedule III;
(iii) in addition to Schedule I orII, for every Dams other than specified dams having hydro-mechanical
components, inspection shall also be recorded in the Form as specified in Schedule IV;
(iv) a copy of the inspection report shall be forwarded to theState Dam Safety Organisation concerned;
(v) the special inspections shall also be carried out immediately in case of any sign of distress or unusual
behaviour is noticed in the dam, at any time;
(vi) dam owner shall take remedial measures as per advice of technical experts received after the inspection;
(c) earmark sufficient and specific funds for maintenance and repairs of the dams other than specified dams and
implement the recommendations of the State Dam Safety organisation;
(d) comply with the quality control measures as specified in regulation 3 of the Quality Control Measures for Dam
Construction Regulations, 2024.
(e) measures for new dams;-The dams, other than specified dams to be constructed after the commencement of this
regulation, shall be designed as per the latest relevant Indian Standardspecified by the Bureau of India standards
under the Bureau of India Standards Act, 2016 (11 of 2016).
SCHEDULE I
[See regulation 3(i) and 4 (a)]
Salient Features of Dams other than specified dams
1. Unique ID of the Dam:
2. Name of the Dam:
3. Dam Owner:
4. Type of Dam:
5. Maximum Height of Dam (from the lowest portion of the general foundation area to the top of the dam):
6. Length of Dam:
7. Location (Latitude and Longitude):
8. Nearest City or Town:
9. District:
10. State:
11. Year of Construction:
12. Name of Stream, River:
13. Purpose of Dam (Irrigation or Drinking water supply or Other):
14. Designed Spillway Capacity (Cubic Meter Per Second):
SCHEDULE II
[See regulation 4 (b)(i)]
Inspection Form for a Dam other than Specified Earthen or Rockfill Dam (having height equal to or more
than three meters)
Dam Name: ___________________________________ Dam ID:________________________
Inspection Date:____________________________ Type of Inspections:________________________
Name of head of the team:___________________________ Other Participants:________________________
Was the spillway flowing? If yes, what was the water depth over the spillway sill?
__________________________________________________________________________________
If no, how far was the water below the spillway sill level?
__________________________________________________________________________________
Was the low-level outlet open? If yes, what was the approximate discharge rate?
__________________________________________________________________________________
Table-1
+-----------------------------+---------------------+-------------------+
| IS/ARE THEREANYAPPARENT | PREVIOUS INSPECTION | CURRENT INSPECTION|
| +-----+-------+-------+-----+-------+-------+
| | Y | N | NA | Y | N | NA |
+=============================+=====+=======+=======+=====+=======+=======+
| CRACKS | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 1. Embankment cracks on the crest?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 2. Embankment cracks on the upstream slope?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 3. Embankment cracks on the downstream slope?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| VEGETATIONGROWTHANDDEBRIS | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 4. Excessive vegetation growth on embankments or crest?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 5. Vegetation or debris blocking the spillway channel?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| STRUCTURALPROBLEMS | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 6. Settlement on the crest? | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 7. Slough, slides or bulges on the upstream slope?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 8. Slough, slides or bulges on the downstream slope?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 9. Slough, slides or bulges on the reservoir shore?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 10. Slough, slide or erosion of spillway channel?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 11. Sinkhole on crest? | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 12. Sinkhole on the upstream slope?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 14. Displaced or broken-down riprap armour?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| SEEPAGE | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 15. Wet areas or seepage on downstream slope or toe?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 16. Ponded water at the downstream toe?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 17. Wet areas or seepage along downstream abutments?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 18. Occurrence of piping phenomenon?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| ANIMALACTIVITY | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 19. Signs of livestock traffic across dam embankment?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 20. Rodent burrows in dam embankment?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| OUTLET PROBLEMS | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 21. Outlet operating problems?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 22. Deterioration of the outlet conduit?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| SPILLWAY PROBLEMS | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 23. Spillway blockage? | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 24. Downstream spill channel blockage?| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| Any other Component or Indicator not mentioned above | | | | | | |
| that may be relevant | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
Comment on any problems, concerns or deficiencies found:
____________________________________________________________________________________________________________
Note:
1. In case of any "Yes" for current inspection in Table-1, the project authority shall take remedial measures as
per advice of technical experts.
2. In case of any "Yes" for both current and previous inspection in Table-1, the matter should immediately be
referred to the highest level of said project for further necessary action for the safety of the dam.
Signature
_________________________
SCHEDULE III
[See regulation 4 (b)(ii)]
Inspection Form for a Dam other than Specified Concrete or Masonry Dam (having height equal to or
more than three meters)
Dam Name: ___________________________________ Dam ID:________________________
Inspection Date:____________________________ Type of Inspection:________________________
Name of head of the team:___________________________ Other Participants:________________________
Was the spillway flowing? If yes, what was the water depth over the spillway sill?
__________________________________________________________________________________
If no, how far was the water below the spillway sill level?
__________________________________________________________________________________
Was the low-level outlet open? If yes, what was the approximate discharge rate?
__________________________________________________________________________________
Table-1
+-----------------------------+---------------------+-------------------+
| What components or indicators of your dam are in UNSATISFACTORY CONDITION? Yes or No?| | |
+-----------------------------+---------------------+-------------------+
| Component | PREVIOUS INSPECTION | CURRENT INSPECTION|
| +-----+-------+-------+-----+-------+-------+
| | Y | N | NA | Y | N | NA |
+=============================+=====+=======+=======+=====+=======+=======+
| CONCRETE or MASONRY | | | | | | |
| STRUCTURE | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 1.Dam Alignment | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 2.Joint filler material | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 3.Concrete or Masonry material| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 4.Drains | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 5.Public safety signs | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| OUTLET | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 1.Outlet Pipe | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 2.Energy Dissipater | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 3.Stilling Basin | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 4.Drains | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 5.Outlet Channel | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 6.Measuring Weir | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 7.Outlet Controls | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 8.Gates | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| SPILLWAY | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 1.Debris Boom | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 2. Entrance | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 3.Sill | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 4.Apron | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 5.Walls | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 6.Upstream Channel | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 7.Downstream Channel | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 8.Upstream Channel Slope | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| 9.Gates | | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
| ANY OTHER COMPONENT NOT MENTIONED ABOVE That May Be Relevant| | | | | | |
+-----------------------------+-----+-------+-------+-----+-------+-------+
Table-2
+-----------+---------------------------------------+-----------------------------------+-----------------------------------+
| Were any of the following POTENTIAL PROBLEM INDICATORS found? | | |
+-----------+---------------------------------------+-----------------------------------+-----------------------------------+
| INDICATOR | CONCRETE or MASONRY STRUCTURE | OUTLET | SPILLWAY |
| +-----------------------+---------------+-----------------------+-----------+-----------------------+-----------+
| | PREVIOUS INSPECTION | CURRENT INS. | PREVIOUS INSPECTION | CURRENT INS. | PREVIOUS INSPECTION | CURRENT INS. |
| +-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| | Y | N | NA | Y | N | NA | Y | N | NA | Y | N | NA | Y | N | NA | Y | N | NA |
+===========+=====+=======+=======+=====+===+=====+=====+=======+=======+=====+===+=====+=====+=======+=======+=====+===+=====+
| a) Seepage| | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| b) External Erosion| | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| c) Cracks | | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| d) Settlement| | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| e) Horizontal Movement| | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| f) Excessive Debris| | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
| g) Vegetation| | | | | | | | | | | | | | | | | | |
+-----------+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+-----+-------+-------+-----+---+-----+
Comment on any problems, concerns or deficiencies found:
____________________________________________________________________________________________________________
Note:-
1. In case of any "Yes" for current inspection, the project authority shall take remedial measures as per advice
of technical experts.
2. In case of any “Yes” for both current and previous inspection, the matter should immediately be referred to
the highest level of said project for further necessary action for the safety of the dam.
Signature
_________________________
SCHEDULE IV
[See regulation 4(b)(iii)]
Inspection Format for Hydro-Mechanical Components in Dams:
1. Is the Gate operation smooth and trouble-free without much noise? Y/N
2. Is there excessive vibration in gate and structure during operation? Y/N
3. If yes, at what gate opening and water level _________________________
4. Is Stoplog or Bulkhead or maintenance gate available? Y/N
5. Is Diesel Generator set or power backup available at dam sites for gate operation? Y/N
6. Is the painting of gates and hoists satisfactory? Y/N
Whether Condition of below mentioned Hydro-Mechanical components is UNSATISFACTORY?
+-----------------------------------+---------------------+-------------------+
| Component | PREVIOUS INSPECTION | CURRENT INSPECTION|
| +-----+-------+-------+-----+-------+-------+
| | Yes | No | NA | Yes | No | NA |
+===================================+=====+=======+=======+=====+=======+=======+
| Radial Gates: | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 1. Gate Leaf, Arms and girders | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 2. Rubber Seals | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 3. Guide Rollers | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 4. Trunnion | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 5. Embedded parts like sill | | | | | | |
| beam and wall plate | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| Vertical Lift Gates | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 1. Embedded Parts | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 2. Gate Leaf | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 3. Rubber Seals | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 4. Wheel | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 5. Guide Shoes | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| Rope Drum Hoist and gantry | | | | | | |
| cranes | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 1. Wire Rope | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 2. Turn Buckles and Rope Socket | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 3. Pulley | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 4. Line Shaft | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 5. Gear & Pinion | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 6. Brakes | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 7. Plummer Block and Bearings | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 8. Worm gear reducer | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 9. Electric Motors | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 10. Electrical connections | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 11. Structure, frame | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| Hydraulic Hoist & HPU | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 1. Hydraulic cylinder | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 2. Piping/Hoses | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 3. Oil tank | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 4. Pressure line filter and return| | | | | | |
| line filter | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 5. Pressure Switches and relief | | | | | | |
| valves | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 6. Pump motor | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
| 7. Electrical connections | | | | | | |
+-----------------------------------+-----+-------+-------+-----+-------+-------+
Note: Add separate sheet of this, if required, to cover other Gate Structures on the Dam, like Intake Gates, Valves, etc.
Additional Comments:
1. In case of any "Yes" for current inspection, the project authority shall take remedial measures as per advice
of technical experts.
2. In case of any “Yes” for both current and previous inspection, the matter should immediately be referred to
the highest level of said project for further necessary action for the safety of the dam.
ANIL JAIN, Chairman
[ADVT.-III/4/Exty./917/2024-25]
Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064
and Published by the Controller of Publications, Delhi-110054.