GOVERNMENT OF KARNATAKA Water resources department (WRD)
One day Stakeholders Consultation Meeting on Implementation of Emergency Action Plan for Bhadra Dam Emergency Action Plan (EAP)
WHY is it required ?
WHAT is an EAP ?
WHEN is it required ? Information WHO are involved ? provided for effective HOW to implement it ? Implementation EMERGENCY ACTION PLAN
WHY ?
Odisha
Super Cyclone < 1,00,000 > 10,000 Died 1999 evacuated
11,60,529 Fani 2019 37 Died evacuated
WHAT HAS IMPROVED ? ? ? EMERGENCY ACTION PLAN
WHY ?
WHAT HAS IMPROVED ? ? ?
Improved Information System
Advance Warning Time
Improved Communication Mechanism
Deployment of teams of Disaster Authority
Marked Evacuation Plans & safe-houses EMERGENCY ACTION PLAN
WHY ?
The core idea is to minimize the INFORMATION GAP EMERGENCY ACTION PLAN
WHY ?
The core idea is to minimize the INFORMATION GAP Who does What, When & How ? EMERGENCY ACTION PLAN
WHY ? WHAT ?
An Emergency Action Plan, or EAP, is a formal plan that
• Identifies Emergency conditions at the dam
• Specifies the actions to be implemented in different types of emergency conditions
• Prescribes the procedures to be followed to minimize loss of life and property damage.
• Identifies the roles and responsibility of the Dam’s Owner and disaster management Authorities in charge to manage emergency situations and evacuate people from low-lying areas of downstream. EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ?
• The EAP defines the notification procedure and course of actions in the event of Hazardous Situations which based on their severity are classified as.
B L U E R E D EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ?
B L U E
• Problem has been detected at the dam & requires continuous monitoring
• The distress condition is managed by the Dam personnel.
• This is a WATCH CONDITION EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ?
• Indicative of dam condition that is progressively getting worse and there is high probability of dam failure.
• Although there is no immediate danger, the dam could fail if the conditions continue to deteriorate.
• Immediate response needed from Dam Site personnel.
• These are ALERT CONDITIONS EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ?
R E D
• These are FAILURE CONDITIONS
• Either the dam is in immediate danger of failing or has already failed.
• No time remains to implement measures to prevent failure.
• EVACUATE IMMEDIATELY EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ?
Prominent situations which may develop into an emergency condition are:
• Severe Storm
• Tropical Cyclones
• Earthquakes
• Security Threat
• Equipment malfuntion
• Other unforeseen conditions EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ? WHO ?
The Key Players - • Dam Personnel – Dam Engineers - Emergency Planning Manager - Dam Owner - Water Resource Dept. • Advisors & Partners – Central Water Commission - Indian Meteorological Deptt. - Other Experts & Agencies • Disaster Management Authorities & Relief Forces • Suppliers & Contractors • Media for communication EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ? WHO ?
EAP clearly identifies Roles & Responsibilities of key players for
• Remedial Measures • Notifications • Emergency Operation Centres • Evacuation • Termination & Follow up EMERGENCY ACTION PLAN
WHY ? WHAT ? WHEN ? WHO ? HOW ?
Effective implementation of EAP – 5 steps
• Event Detection
• Emergency Level Determination
• Notification & Communication
• Actions to be taken up
• Termination & Follow up
EAP – Bhadra Dam
• EAP of Bhadra dam is based on the stipulated guidelines
Introduction to Bhadra Reservior project
• Bhadra Dam is constructed across river Bhadra near Lakkavalli village in Tarikere Taluk, Chickmagalur District
• The Gross capacity of the dam is 71.535 T.M.C. where as the live storage is 63.035 T.M.C
• Catchment area - 1968 SqKm • Seismic Zone II . It’s a multipurpose dam • Irrigating 105570 ha • Generating an electricity of 40.5 MW. • Providing Drinking Water to More than 350 villages coming under Chickmaglore, Shimoga, Davangere, Chitrdurga, Haveri and Bellary districts 1 maart 2021 Bhadra Dam Components Bhadra Dam Components Main dam- Masonry •Length of the dam:440.43 mtrs. •Height:59.13 mtr (76.1)
Earthen embankment •Saddle-1 – Length- 487.68 m •Saddle-2 –Length- 262.13 m, •Saddle-3- Length - 432 .80 m,
Design Flood: 3398 cumecs (Revised Design Flood:7472 cumecs)
Over the Spillway :3021.38 cumecs (1,06,700 cusecs) River Sluice :376.62 cumecs(13,300 cusecs)
Ogee spillway with Vertical lift gates Length:82.30mtrs Crest gates: 4Nos Canal: Right Bank Canal:2650 cusecs- 97278 ha
Left Bank canal : 380 cusecs- 8292 ha 1 maart 2021 Information provided in the EAP – Bhadra Dam The Emergency Action Plan of Bhadra Dam includes
• Notification Procedures • Flood Management Operations • Roles & Responsibilities • Emergency Detection, Evaluation & Classification • Preventive Actions & preparedness • Inundation Maps for 3 failure scenarios Flood • Evacuation Routes & Shelter Points Hazard Mapping • Identified route for barricading Information provided in the EAP – Bhadra Dam Notification Procedures
WATCH CONDITION notification flow chart for
BLUE level emergency Information provided in the EAP – Bhadra Dam Notification Procedures
FAILURE CONDITION notification flow chart for ORANGE & RED level emergency Information provided in the EAP – Bhadra
Dam Calculating Inflow • Inflows to the Bhadra reservoir is calculated by constantly observing the depth of water guaged on the one of the pillars of the bridge constructed across the bhadra river. • Cushion time for reaching same inflow to bhadra dam site assumed as Eight hours. • Frequently observing water level • CWC inflow forecasting Flood Management
• Mansoon period June to November end. • The peak period is reckoned from July 1st to September 15. • Impounding generally starts during August. • It is proposed to have 2.5 tmc storage capacity as flood absorption below FRL during active monsoon so as to have safe and effective reservoirs operation schedule. • Advance warning with quantity of water e released in the river will be intimated by the Superintending Engineer, Bhadra Project Circle, BRP to all the stakeholders through phonecalls,emails,media & Social media • Police department establishes wireless communication centre (dedicated radio frequency) at dam site with the help of this the concerned police department will get the information time to time Information provided in the EAP – Bhadra Dam Emergency Detection-Evaluation/Classification
1. Situation :Storms,Earth quake & sabotage etc 2. Signs of failures: Piping, Sliding & overtopping etc. 3. Evaluation & Classification:Blue,orange & Red
Example Saddle 1 (embackment Dam)
• Visible cracks in transverse or longitudinal directions in crest and slopes: BLUE • Upstream and downstream slopes showing large sign of bulging or cavity :Orange • Rapid development of settlement Undulations and local depressions or heaving in the surface of the crest : Red
Previously Known Problems Information provided in the EAP – Bhadra Dam TAB-5
Evidence of Distress
Equipment, Emergency condition Data to General observation Specific observation Emergency action material, level record and supplies
Initiate 24-hour surveillance of reservoire Office Inflow Upto 20000 cuses BLUE level and inflow by putting Vehicle &Outflows AE/JE In shift duty. Initiate 24-hour surveillance of reservoire level and inflow. Warn the downstream population Office Inflow Upto 50000 cusecs ORANGE and downstream dams Vehicle &Outflows Ouflow Range when with the help of dam level from 182 revenue/Police feet to 186 feet Department. Initiate 24-hour surveillance of reservoire level and inflow. Warn the downstream population Office Inflow Above 1,00 000 cusecs RED and downstream dams Vehicle &Outflows with the help of revenue/Police Department. Information provided in the EAP – Bhadra Dam Roles & Responsibilities Dam Site Engineers- EXECUTIVE ENGINEER BHADRAVATHI/AEE BRP - Routine dam maintenance work. - Inflow Calculation - Monitoring & surveillance of dam and appurtenant structures Main dam & Gates,Saddle dam, drainage gallery & Right Bank abutment - Notifying Dam Emergency Manager (SE) during any potential emergency situations & assisting - As per advice, will operate dam gates / under sluices - Prepare estimates - contact the suppliers / resources available for executing actions during emergencies Information provided in the EAP – Bhadra Dam Roles & Responsibilities
Emergency Planning Manager: superintending engineer (Emergency operation centre-Bhadra Project Circle BRP) - Superintending engineer is the first line of dam observer and is the person responsible for initiating implementation of the EAP - Examine the distress conditions as notified by site engineers and classify the events into the Emergency Alerts Inflow assessment/Reporting to Higher authorities/Issue Notification through media/Directions to operate the gate/Contact the experts/Contact suppliers & resources/ Directing specific action to repair works/Deputing engineers/Funds/estimates/Distribution of EAP/Updating EAP - Will notify the Disaster Management Authority and others as per the notification flow Chart. - Will coordinate with the emergency personnel for initiating & implementing EAP. Information provided in the EAP – Bhadra Dam Roles & Responsibilities for Evacuation
• The Shimoga,Chikkamaglore,Davanagere,Haveri,Gadag and Bellary District Disaster Management Authorities are responsible for initiating evacuations.
• Making Internal arrangements and Fix their responsibilities within Distirct to Handle the Emergency
• The Flood Hazard Reference Values suggesting Flood wave arrival time, evacuation route, shelter points etc. (Annexure –4)
• Inundation cum Evacuation Map (Tab 2) shall be utilized for evacuation during specific conditions. Information provided in the EAP – Bhadra DamGeneral preparedness
• What are actions are to be taken both before and development of emergency conditions • Increasing response readiness in a uniform and coordinated manner • Helping to reduce the effects of a dam failure. • Dam monitoring & Surveillance- EE-SE- DSRP-Pre/post mansoon • Response on Forecast of Excessive Inflow- SE (Explained earlier) • Response during Absense- EE/AEE/AE • Response during Periods of Darkness and Adverse Weather-AEE/JE electrical/KPCL • Access to the Site Information provided in the EAP – Bhadra Dam Information provided in the EAP – Bhadra Dam Possible Preventive Actions
• Type of Preventive measures can be taken in an emergency to prevent the catastrophic failure of the dam-Seepage failure/Sliding/ • The repairs are only temporary, and a permanent repair should be designed by an expert as soon as possible. In all cases, the appropriate Notification Flowchart must be implemented and all the concerned emergency personnel must be notified. Any preventive actions should only be undertaken by the Site Engineers under the direction of Emergency Planning Managers. Information provided in the EAP – Bhadra Dam Flood Inundation Map
Development of Flood Inundation Map for following three scenarios –
a. Dam Failure caused by OVERTOPPING from the inflow design flood leading to breaching and uncontrolled release of impounded water.
b. A non-flood dam failure caused by internal erosion (PIPING) with reservoir at full supply level leading to breaching and uncontrolled release of impounded water.
c. A LARGE CONTROLLED-RELEASE flood without dam failure.
The inundation map of Bhadra Dam was prepared by Central Water Commission Information provided in the EAP – Bhadra Dam A sample Flood Inundation Map Information provided in the EAP – Bhadra Dam Flood Hazard Mapping
Following information can be drawn from Flood Inundation Map • Area inundated – Settlements affected
• Time of Arrival of Flood Wave
• Velocity of flood wave
• Maximum Water surface Elevation Information provided in the EAP – Bhadra Dam Flood Hazard Mapping
Above information was utilised (along with other GIS data) to mark the following details in the map
• Name of affected village / areas/ factories / schools etc.
• Route Maps
• Shelter Points or Safe-houses
• Roads / Bridges to be barricaded. Information provided in the EAP – Bhadra Dam Flood Hazard Mapping – Affected Settlements Sl District Taluk No. of Remarks No Settlements / Locations marked for Description Hazaribaghevacuations Bokaro Total 1 Shivmogga Shimoga, 102 High Risk No. of Settlements / Bhadravathi Locations marked for 8 63 71 2 Chikkamagloreevacuations Tarikere 18 High Risk 3 Davanagere Harihara, Honnali, 83 High Risk Block Harpanhalli1 5(Time 6 available) Panchayat Davanagere 2 38 40 4 Haveri Haveri, Ranibennur 79 Moderate Hirekerur 5 Gadag Gadag Mundargi 27 Moderate Shirahatti 6 Bellary Hagaribommanahal 36 Moderate li Hadagali Total 345 Information provided in the EAP – Bhadra Dam Flood Hazard Reference Values cum Evacuation Table
Flood hazard reference values, for each of the three inundation scenarios with following relevant information is tabulated as quick reference
• Name of villages
• time of arrival of flood wave
• Evacuation routes
• Name of shelter points
• Officers responsible for evacuations along with their contact details Information provided in the EAP – Bhadra Dam A sample Flood Hazard Reference Value cum Evacuation Plan
District Distance ͣ Taluk Evacuation authorities Sl downstrem Alternative Evacuation Shelter/Refug authorities Time Name of Village Existing Route Remarks Responible No from dam Route e Area Responible for Window for (km) evacuation evacuation
Less Than 13 Hours
Exisiting VR All other VR Connecting Tadakanahalli, Connecting Thadakanahalli without Move Towards 1 69.7 12.30 Hallur 1 Karnataka Hirekerur Haveri Tadakanahalli Via SH - using SH-52 after 12 Tadakanahalli 581210 52 Hours
Exisiting VR All other VR Connecting Tadakanahalli, Connecting Thadakanahalli without Move Towards 2 71.6 12.50 Puradakeri Karnataka Hirekerur Haveri Tadakanahalli Via SH - using SH-52 after 12 Tadakanahalli 581210 52 Hours
Less Than 14 Hours
Exisiting VR All other VR Connecting Bullapur, Move towards 5 78.3 14.05 Kusagatti Connecting Bullapur Bullapur without using Karnataka Hirekerur Haveri Bullapur Via SH -52 SH-52 after 13 Hours 581119
Exisiting VR All other VR Connecting Bullapur, Move towards 6 81.8 14.10 Fattepur Connecting Bullapur Bullapur without using Karnataka Hirekerur Haveri Bullapur Via SH -52 SH-52 after 13 Hours 581119
• Check Annexure 4 Information provided in the EAP – Bhadra
DamCase Study of a location - information obtained from inundation map Min. Max Time of water Max. Max. Village / Area Scenario Vulnerability Flood surface Depth Velocity Arrival elevation Failure due Anveri & 5 hr. 50 570-585 15.49 2.52 to H6 Nimbegondi 2 min mtr mtr m/sec Overtopping Distance – 42 Failure due 11 570-585 13.36 2.28 km from H6 Bhadra dam to piping Hours mtr mtr m/sec
H1- Safe H2- Unsafe for small vehicle H3- Unsafe for Vehicles/Childrens/Elderly H4- Unsafe for Vehicles/Proples H5- Unsafe for Vehicle/peoples & some Building vulnerable to structural damage H6- Unsafe for Vehicle/peoples & all Building will fail Information provided in the EAP – Bhadra Dam Case Study of a location – Anveri & Nimbegondi Flood Hazard Reference Value and Evacuation Plan for Failure due to overtopping
District Evacuation Name of Alternative Taluk authorities Priority Evacuation Shelter/Refuge authorities Time Village Evacuation Remarks Responsible for Order route Area Responsible for Window Route evacuation evacuation
Use Both Road to Use Use (VR) Shimoga reach Ittigehalli & Malleshwara Bhadravathi (VR)Ittegeha Arasinagatta (Failure 5.50 74 Anaveri Move from the temple ( Annexure lli anveri ittigrhalli Notification village within 5.50 Ittigehalli 11,12,13 & 14) road Road Chart) hours
Use Both Road to Use Use (VR) Shimoga reach Ittigehalli Govt primary Bhadravathi Nimbegondi (VR)Ittegeha Arasinagatta (Failure 5.55 75 and move from School ( Annexure 2 lli anveri ittigrhalli Notification the village within Ittigehalli 11,12,13 & 14 road Road Chart) 5.55 hours Information provided in the EAP – Bhadra Dam Case Study of a location – Anveri & Nimbgondi 2 Information provided in the EAP – Bhadra Dam Case Study of a location – Anveri & Nimbegondi 2 Information provided in the EAP – Bhadra Dam Barricading Details-Annexure 3
Road Name Taluk Remarks SH-52 Halgeri to Honnali Ranibennur Near Halgeri Police Station Halgeri to Shikaripura (Between these SH 57 roads Rattehalli,Masur and Kooli Road Ranibennur Near Halgeri Police Station Should be Blocked SH 62 Halgeri to Hirekerur Ranibennur Near Halgeri Police Station Halgeri to Ranibennur (Between these SH 57 Ranibennur Near Halgeri Police Station roads Chalageri road Should be Blocked Near FPP SHOP SH 25, Duggavathi, Karnataka 583137 Near Sant Sri Sevalal VR Ranibeenur To Medleri and Airani Ranibennur Temple Govinda Badavanni Tanda Ranibennur Rural, Karnataka 581115 Near KVG bank Chalageri, Karnataka VR Chalgeri To Airani and Airani Ranibennur 581145 Shaneshwar Temple Bayalu Haleya VR Ranibeennur to kudrihal/Gadagur Ranibennur Gangapur Road,, Ranebennur, Karnataka 581115 Ranibeenur To Guttal All Deviation Roads Near Kadu Shiva Temple ranibennur and VR Haaveri Towards rivers Should be blocked doddahonda Lake Guttal Near havanur deviation road Guttal and SH -2 Guttal to Holalu Haaveri Pujar Petroleum SH 2,Holalu (Both Side) VR Guttal to Havanur Haaveri Near Holalu deviation road Guttal Guttal to Neeralagi-M-Guttal Joining Near sbi bank India, Guttal, Karnataka VR SH136 (Including all Deviation Roads Haaveri 581108 and Joining SH 136 (Both Side) Towards rivers ) Information provided in the EAP – Bhadra Dam Affected Bridges and Barrages (Annexure 2)
Sl No Road Name Taluk Remarks 1SH-57 Tarikere- manglore road Bhadravathi Infront of Bhadra Dam Bypass Road (Outside the Bhadravathi 2NH-69 Banglore-Shimoga Road Bhadravathi City) 3SH-65 BH ROAD Bhadravathi Old Bridge(Bhadravathi City) 4 New Bridge Road Bhadravathi New Bridge (Bhadravathi City) 5 Railway Bridge crossing Bhadravathi Bhadravathi City 6NH-369 Shimoga- Chitradurga Road Bhadravathi Near Holehonnur 7NH-369 Shimoga- Chitradurga Road Shimoga Near Bekkinakalmata Shimoga City 8 Railway Bridge crossing Shimoga Shimoga City 9NH-69 Banglore-Honnavra Road Shimoga Bypass Shimoga City 10 Kadekal Mattur Road Shimoga Joining SH -148 11 Holalur-Hadonahalli Road Honnali Joining SH-25 12SH -25 Shimoga Harihara Hospet Road Honnali Near Govt Bus depot 13 Tumminkatte Ukkadagatri Road Honnali Crossing To Reach Nadigudi 14NH -48 Banglore Mumbai Highway Harihara Inside the harihara city Banglore Mumbai Highway (By 15NH -49 Pass) Harihara outside the harihara city 16SH -76 Inside Harihara city Harihara Harihara city 17 Railway Bridge crossing Harihara Harihara city Information provided in the EAP – Bhadra DamContact details • District Administration • National, State and District Disaster Management Authority • Police Department • Fire • Zillah Panchayath • Assistant Commissioner • Tahshildars • Muncipal • Taluk Panchayath • Education • Health and Hospitals • Downstream Dam owners • Dam officers and Workers • National Highway • KRIDL • PWD • Media and department of information and public relation • Contractors/Suppliers • Forest • Food and Civil supplies • Transport • Horticulture • Fisheries • Muzarrai and Waqf • Tourism • Women and Child Welfare • Industries and Commerce • Minor Irrigation Stakeholders Consultation Meeting
Understanding roles & responsibilities of all Stakeholders for effective implementation of EAP of Bhadra Dam
Dam Owner
Disaster Management Authorities
Downstream Affected villagers
Industries mines / railways etc.
Media persons Stakeholders Consultation Meeting
Valuable inputs /comments, if any to make the document more effective will be incorporated and published for implementation.
As this is a dynamic document, it shall be annually revised / updated (before 31st May of each year) with input from all stakeholders. Thank You