Emergency action plan EAP Dam break Analysis and Flood Inundation mapping for Minor Dams

Item No. 1:- Considering Design of Minor Dams as per CWC guidelines based on data availability. It includes detailed reporting of physiography, topography, climatology, hydrology, geological formation of Minor Dams catchment area (Upstream and Downstream). GIS based figures with necessary methods and models will be submitted separate chapter in final report. Estimate inflow into Reservoir using historical available data.

Item No. 2:- To carry out detailed scenario analysis for 2-dimensional hydraulic simulation from release of Minor Dams along with lateral from river tributaries, nalas into main river for preventing flood inundation in the city. To study dam break analysis (Ties-I) as per provisions to the extent modified and super-ceded in the “Guidelines for developing emergency action plan for Dams” (Feb-2016) Doc. No. CDSO-GUD-D-01-vz.0) : the analysis should contain a report and the result of model runs, including graphs and tables. The report should summarize all data, should explain and comment the obtained output from software. The dam break study should has to be carried out according to specification of the following conditions and aspects: *Dam failure with the reservoir level at normal storage elevation (FRL) and fair weather conditions. * Dam failure with bad weather, i.e. considering the inflow interim the reservoir dure to probable maximum Flood ( PMF) and MWL, or standard project Flood (SPF)/Design Flood and MWL. * Flood routing downstream of the overflow from the spillway and gates produced by PMF or design flood (without dam break scenario) * Other relevant conditions peculiar to the dam (like spillway discharge that is safe for the dam but may cause emergency conditions in the areas downstream). *Assessment of safe carrying capacity of the downstream channel and safe level evolution. Digital supports of land cover map used, with minimum grid resolution of 5.8m.

Item No. 3:- prepare flood inundation map which clearly depict the flooded areas under conditions mentioned in Item No. 2. These maps shall be included as a minimum, the following results or parameters: time of arrival of the wave front (time from the brench to the time that certain areas is flooded), maximum depth of inundation, maximum velocity of low and water surface elevation. 1) the scale of map shall be started in the scale 1:10000 and size A1, and they should contain all the information regarding the floods. The second format of the map should be prepared for specific purpose of the EAP, they will issued in format A3, scale 1:10000 for non urbanized area and 1:5000 for urbanized areas, with all these installation located. 2) Inundation maps should be prepared on basis of two-dimensional depth average flow modeling. All leaves, bridges, culverts and other in-line or lateral structure of structures / obstructions must be included as per provisions to the extend modified and super ceased in” the guidelines for Developing Emergency Action Plan for Dams (Feb 2016) Doc. No. CDSO-GUS-DS-01-v2.0)

Item No. 4:- Determine and identify those situations or triggering events that would initiate an emergency action and specify the actions to be taken and by whom. Identify all jurisdictions, agencies and individuals who will be involved in the EAP. Discuss the development of the EAP with these parties. Field visits for data collection, ground truthing of surveyed and satellite data along with critical locations regarding EAP are also to be included. This interaction should include discussion on the need for and operation of an emergency operations center and reception center, as well as a discussion of evacuation (destinations, priorities and procedures), post-flood actions (recovery and cleanup), and other measures in the event of an emergency. Identify primary and auxiliary communication system, both internal (between the person and the dam site) and external (between the dam personal and outside entities) with presentation in easy chart for all the communications. List and privatize all person and entities involved in the notification process and draft th notification flow chart. Develop a draft of the EAP as per guidelines provided in CWC (2006) report as per the provision to the extend modified and superseded in “ the Guidelines for Developing Emergency Action Plans for the Dam (Feb 2016) Doc. No. CDSO-GUD-DS-01-v2.0)

Item No. 5:- Two days training with hands on for Dam Break Analysis using software, preparation of flood inundation maps officials of the dam officials and DSO officials, engineers related to the dam. Also, train the them on preparation of emergency action plan as per CWC guidelines for Dams

Training for officials of the dam owner and officials of the other departments all shake holders / opinion makers / local administrator administrations / police / fire / village panchayat / state disaster management unit involved in the EAP, Dissemination of the final study to all the slash stack holders / opinion makers/ local administration / village pandhayat and also for local people who are living in the possible inundation area.