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● Government of Maharashtra ● Water Resources Department Surya Project (Dhamni Dam), Tal. Vikramgad, Dist. Palghar SOPSOP----FloodFlood Management Konkan Irrigation Development Corporation ,,, Thane Water Resources Department, Konkan Region, Mumbai Thane Irrigation Circle, Thane Executive Engineer Palghar Irrigation Division, Manor ● Surya Project Colony, Tal.& Dist. Palghar --- 401403 ● Ph. 8007335373 ● ● EEE-E---mailmail Id : [email protected] ● (Er. S.G. Gaikwad) Asst. Engineer (Gr(Gr----I)I)I)I) Irrigation Sub Division, Manor (Er. R.B.PawarR.B.Pawar)))) Executive Engineer Palghar Irrigation Division, Manor (Er. P.B. MisalMisal)))) Superintending Engineer Thane Irrigation Circle, Thane Standard Operating Procedure For Flood Control of Dhamni Dam of Surya Project INDEX Chapter No. Particular Page No. q “ ç ç v - SOP 1 1.0 Preamble 5 2.0 Objective of SOP 6 3.0 Pre -Monsoon Activities 7 4.0 Activities During Monsoon 13 5.0 Post -Monsoon Activities 16 6.0 Appendices Appendix I - 17 Reservoir Operation Procedure Appendix II – 20 Communication Protocol for Government/ Project/Trigger Mechanism Appendix III - 24 Communication Protocol for Non-Government Projects Appendix IV - Communication Protocol for Inter State Project 24 Appendix V - Preparedness checklist for Superintending Engineer 25 Appendix VI - 27 Preparedness checklist for Executive Engineer Appendix VII - 28 Communication / Action Chart Appendix VIII - 35 List of Phone Numbers of Officers Appendix IX - 38 Administrative Preparation Definitions 39 Abbreviations 40 ç ç ह ê “ flÉ . ¶ q - !É ç ç a.. 1 çv _ :- ç ( q ) 2 !q" :- #s% 3 #xह :- !घç 4 r,-v _ :- ./v r,ç 0 er,-v _ :- 2 ç 3 4v _ :- 7 ç6 e7 8s ! #ह :- 1) ç9: ç ,; q :- ह 2) ç9: ç !घ" q :- ह 3) :<# q: ç q :- ह 4) #xह #ç=4 !घ" q :- ह 8 ç6 # ? 8s ! #ह :- 1) ç9: ç ,; q :- ह 2) ç9: ç !घ" q :- ह 3) :<# q: ç q :- ह 4) #xह #ç=4 !घ" q :- ह 9 e7 8s ! v A4 ;ç :<B :- 1, 10 # ? 8s ! v A4 ;ç :<B :- qह ह 11 e7 8s ! ç"B # ह,ç s_. :- ह 12 # ? 8s ! "ç"B # ह,ç s_ :- 38 s 13 çv ;Bq 2#EFG :- 1) !,G HI vJ .#q . :- 203.30 vJ .#q . 2) -90 GKq #/ह - 4!घ . :- 241.99 4!घ -70 GKq #/ह - 4!घ . :- 288.04 4!घ -00 GKq #/ह - 4!घ :- 371.23 4!घ 3) Lv #ह qÑ e!M bह.- :- 1977 = . 4) !,G HI ! हO v A4 :- 4232.00 # .# . - 2017 #..- = 0) _%Lv qç . :- os L4ç_v _P 0 L4ç_v bqç 12 . x 8 . #s H - kq"-घ..RSq_4. 2180 घ GçRq_4 #s H -# L4ç-घ..Rq_4. 433 घ GçRq_4 a.$. % % &'( 3) çv ; - (4!घ) :- #x_ ; - 273.30 V ; - 8.93 kq" ; - 280.31 7) _% < B W v :- 170.480 ; - (4!घ) 8) L4ç_"B y!! ; :- 109.83 (4!घ) 9) # _I Y . :- a.. !_q H Z"G Gç 4!घZ" 4!घ . 1 4 B 221.24 37.40 -- -- 2 !घ"O # Fq B 279.78 80.30 313.38 8.93 3 _% < B 332.77 110.30 3193 170.48 4 _v B 379.00 118.30 10074 280.31 0 < ç < B 401.80 122.00 -- -- 3 4 L4çv B (River 233.13 72.00 -- -- Sauice) 7 dentent habae x,%! bह. 8 Discharne habae :- x,%! bह. 14 L4ç #çv! v6 o v :- 07R00R1994 #4 _q pç #çv! v6 :- 2014 " q!,q v = 15 ç #çv! v6 o v :- 07R00R1994 #4 _q ç #çv! v6 :- 2014 " q!,q v = 1, s! a "8 :- a) हO ç :- 1730 घ. .R q_4 ) ç_çHq e,x :- ç_çHq e,x - :- ç_çHq e,x -s# E! :- !! # B ç= br s <ç . ç_çHq e,x -: # :- -- 17 çç #çç ar :- ह _sq ! #! bह q. 1. r,ç ç# _Iq a# qç , :- c_öx . _. 4. q"!qv _, O, "P a#8_ , x!_4 #8s, q,q 4E, "_ât 4"ç7 R s7 _q, t-!. 4ç7 - 022-22374442, 22372232 ,. 9421942220 t-! - cewrdyrznmaia.cem 19 #xह ç# _Iq a# qç, :- c_öx. qE . #B _, O, a Hq a#8_ , ; G_Ñç _%B, ; 4"ç7 R s7 _q, t-!. 4ç7 - 022-20329809R20329383 ,. 8888807300 t-! - seticthnznmaia.cem R 01 q ç# _Iq a# qç , :- c_öx . ç. 8 . ç , _, O, q qç a#8_ , !घç G_Ñç #8s, ,ç 4"ç7 R s7 _q, t-!. 4ç7 - 8007330373 ,. 7088801304R8398388999 t-! - eepidpaanharznmaia.cem Statement showing storage content in Dhamni Dam at various levels R.L. (In M.) Storage (In Mm 3) R.L. (In M.) Storage (In Mm 3) 68.00 0.001 97.00 48.485 69.00 0.040 98.00 54.622 70.00 0.073 99.00 60.760 71.00 0.119 100.00 66.897 72.00 0.158 101.00 75.155 73.00 0.344 102.00 83.412 74.00 0.530 103.00 91.670 75.00 0.716 104.00 99.927 76.00 0.902 105.00 110.517 77.00 1.390 106.00 121.107 78.00 1.879 107.00 131.697 79.00 2.367 108.00 142.287 80.00 2.855 109.00 155.055 81.00 3.876 110.00 167.822 82.00 4.896 110.60 175.488 83.00 5.917 111.00 180.590 84.00 6.937 112.00 193.357 85.00 8.710 113.00 207.852 86.00 10.482 114.00 222.347 87.00 12.255 115.00 236.842 88.00 14.027 116.00 251.337 89.00 16.002 117.00 267.833 90.00 19.697 118.00 284.222 91.00 22.532 118.60 285.310 92.00 22.367 119.00 300.664 93.00 29.612 120.00 317.107 94.00 33.857 120.35 323.622 95.00 38.102 124.00 391.567 96.00 42.347 Discharge Table Statement showing discharge through one gate, when gate opened for maintaining the required level in reservoir-formula used Q = (2/3) x√ 2.3 C.L. (H1 3/2 – H2 3/2) in F.P. System Sr. No. Reservoir Water Gate (H1 -d) d/H1 C in F.P.S. Discharge level over crest Opening (H2) System through one (In M.) H1 (In M.) D gate (In cumecs) 1 2 3 4 5 6 7 8 1 113.60 3.00 0.400 2.600 0.135 0.705 24.72 2 115.60 5.00 0.300 4.700 0.060 0.727 24.94 3 117.60 7.00 0.275 6.725 0.039 0.725 26.86 4 118.60 8.00 0.305 7.695 0.038 0.730 32.13 CHAPTER NO. 1 PREAMBLE Dhamni Dam of Surya Project Tal. Vikramgad is constructed as a multi-purpose project designed for water storage and not as flood control measures. Recurring flood losses hamper the economic development of the area. flood is a constant threat to the population residing in the area where inundations occur frequently. The situation calls for improved flood preparedness in order to ensure that appropriate and effective response measures are taken during flood emergency and thereby minimize the loss of life, property and environment. Apart from an effective disaster response system, it is important to have an effective flood prevention and mitigation strategy to reduce the vulnerability. Thus far, flood control measures have been undertaken through planned pre-monsoon meetings at different levels- from the project level to the State level. These coordination meetings envisage exchange of information and specific coordination activities among authorities responsible for flood management, and sensitization for pre-monsoon & monsoon activities. The Government of Maharashtra Department of Water Resources Directorate of Disaster Management felt the need for standardizing the operating procedures. With this in view the Department of Water Resources has prepared the SOP for flood management of Dhamni Dam of Surya Project Tal. Vikramgad Dist. Palghar. 1.1 GENERAL OPERATIONS OF DHAMNI DAM OF SURYA PROJECT : The primary requirement of dams is to plan the outflows in such a manner that by the end of the monsoons the reservoirs are filled to 100% capacity, subject to the adequacy of rainfall. The operation of each gated dam is regulated through a Reservoir Operation Schedule (ROS) that lays out the schedule of releases. The ROS is prepared on the basis of fortnightly reports 95% dependable yields during the monsoon. As per the ROS the reservoirs are kept at lower levels in order to have absorption capacity to accommodate flood water and thereby enable controlled discharges through spillway gates. Water managers face the challenge of controlling the outflows while at the same time maintaining reservoir levels such that they are filled by the end of the monsoon. The increasingly inconsistent pattern of rainfall and its uneven distribution due to climate change have increased the difficulty of this task. CHAPTER NO. 2 OBJECTIES OF SOP This SOP aims at taking timely action with a view to prevent or minimize damage to human and animal life and to property and environment in and around the river. This will be done by improving systematic coordination among Departments and stakeholders, and streamlining communication at all levels of decision making. Objectives are as follows :- I) Identify hazard potential on downstream of the dam. ii) Monitor flood situation. iii) Warning about probable floods in advance, to have advance action. iv) Monitor and protect irrigation as well as all other infrastructures created and protection of Human lives & live stocks. v) Restore damaged infrastructure due to floods. 2.1 The SOPs are prepared for Dhamni Dam of Surya Project Major Project I) Gated dams with manual, electrical or mechanical power operated gates, irrespective of the storage capacity or spillway discharging capacity.