1. Where is Polavaram project located?
The Polavaram Project is located in Andhra Pradesh on the
river Godavari, near Polavaram village about 34 KM upstream of
Kovvur, Rajahmundry and 42 KM upstream of (Godavari Barrage) Sir
Arthur Cotton Barrage, where the river emerges out of last range of
the Eastern Ghats and enters the plains. The longitude and latitude
of the Project site are 810-46'E and 170-13'N respectively.
2. Why is the Polavaram project lifeline for the citizens of AP?
Polavaram will benefit all the 13 districts of A.P, directly or indirectly. Surplus water of Godavari River will be diverted to Krishna and Pennar basins of the state through Polavaram project. Godavari-Krishna-Penna Rivers interlinking will be a major step towards making AP drought proof.
3. What are the unique features of the project?
The project is located on the river Godavari. The project involves one of the major river diversions in the country. The spillway of the dam is located in the flank portion while the earth cum rock fill (ECRF) dam is located in the river portion. The spillway of the project has the highest discharge capacity in India (50 lakh Cusec) and one of the largest gate sizes (16mX20m). The diaphragm wall beneath the ECRF dam will also be the deepest diaphragm wall in India (100 m depth). Once completed the dam will have a gross storage capacity of 194.6 TMC and a live storage capacity of 75.2 TMC with a flood design discharge of 50 lakh cusecs
4. Why the project is called multi-purpose irrigation project?
The project will serve multi-purpose benefits to the State of AP and other neighboring states. Once completed, the project will create a new ayacut of 7.2 lakh acres and provide Irrigation benefits for the upland areas of East Godavari, Visakhapatnam Districts under Left Canal and West Godavari, Krishna Districts under Right Canal. It will also generate 960 MW of hydro-electric power. In addition, the project will supply 23.4 TMC of drinking water to Visakhapatnam city and also to Vizag steel plant through its left canal. It will also facilitate an inter-basin transfer of TMC annually to the Krishna river basin through its right main canal. It will also provide indirect benefits such as development of pisciculture, recreation facilities and urbanization.
5. Who is executing the Polavaram project?
The Project has been accorded national project status by the union government in 2014 (under Section-90 of A.P. Reorganization Act, 2014). Polavaram Project Authority (PPA) was formed in Jan 2015 under Ministry of Water Resources to expedite the project execution. The project is being executed by the Govt. of AP on behalf of Govt. of India.
6. Who are the major contractors working on the Project?
Large size and reputed national and international contractors are engaged in the execution of the various works. M/s Transstroy- JSC EC UES (JV) is the main contractor for the project. Excavation works of the project is being carried out by M/sThriveni. Diaphragm wall construction is being undertaken by a reputed German firm M/S Bauer along with M/s L&T in a JV. Jet grouting work is being carried out by another reputed German firm M/s Keller.
7. Key features of the project construction?
Polavaram project is one of the biggest dam project being undertaken in the country. The total scope of excavation and concrete is 1055 L cum and 34 L cum respectively. The major features of the project are:
- Spillway: has a length of 1054.40 m over flow section and
non over flow of 37 m on either side with total length of 1128.40 m
long is provided. It is having a 48 Nos. radial gates (20mX16m) to
pass a maximum flood discharge of 1.41 lakh cumecs (50 lakhs cusecs
- Spill Channel: has a length of 2920m and bed width of 1000m
is proposed at downstream of spillway.
- Earth -cum- rock fill dam: ECRF dam is 1750 Mts. long with
a maximum height of +53.320 Mts. (175 ft.), top width 15M and with
single plastic concrete Diaphragm wall of thickness 1.5m. Deepest
diaphragm wall depth varying from 40m to 120m
- Reservoir: has a gross storage capacity of 194.6 tmcft and
a live storage capacity of 75.2 tmcft with a flood design discharge
of 50 lakh cusecs
8. How much is the storage capacity of the reservoir and what is the annual water utilization?
Total reservoir capacity of Polavaram project is 195 TMC. The annual water utilization is 322 TMC
9. How much is the installed capacity of the power house?
Installed capacity of power house is planned as 960 MW
10. How many people will be benefited by drinking water supply?
A total of 28.5 Lakh people will be benefited by drinking water facility
11. When is the project likely to be completed?
The Polavaram head works construction is targeted to be completed by 2019. The power house construction is likely to be completed by 2021.
12. Is Polavaram project economically viable?
Economic viability of the project has been evaluated in terms of Benefit Cost Ratio (BCR). BCR is the ratio of the net annual benefits of a project expressed in monetary terms, relative to its annual costs, also expressed in monetary terms.
As per the assessment, this project will confer substantially large benefits, much larger than the cost involved, with a BCR of 1.62.
In addition, the project is likely to bring additional benefits like flood control, recreation income, inland fishing and improvement of life's of people
13. Whether Polavaram project has got all statutory clearances?
Polavaram project has got all the statutory clearances in place. Brief details are as under:
||Site Clearance from MoEF
||Environmental Clearance from MoEF
||Wild Life Clearance from National Board of Wildlife
||R&R Clearance from Ministry of Tribal Affairs
||Forest Clearance (Stage-I) from MoEF
||Forest Clearance (Stage-II) from MoEF
||TAC Clearance from Central Water Commission
||Investment Clearance from Planning Commission
||Revised TAC Clearance for the updated cost
14. How much extent of land is required to be acquired under the Polavaram project?
Land in only 2 districts of Andhra Pradesh (East Godavari and West Godavari districts) is required to be acquired under the Polavaram Project. The details of extent of land is as under:
|Level || Land required (Ac. Ctc)|| Land acquired (Ac. Ctc) || Balance (Ac. Ctc) ||Land required (Ac. Ctc) ||land acquired (Ac. Ctc) || Balance (Ac. Ctc) |
|Up to 41.15 mts (coffer dam level) || 13190.18 ||11780.15 ||1410.03 ||29316 ||28972 || 344|
|Total || 106798.63 ||49401.85 ||57396.78 || 51858 ||50472 ||1386|
15. What are the other states that are affected by the project?
The other states that are affected by Polavaram project are Odisha and Chhattisgarh. As per the Environmental Clearance from Ministry of Environment and Forest, Government of India, a total of 6,316 persons from Orissa and 11,766 from Chhattisgarh are likely to be affected due to construction of Polavaram Project.
There will be no submergence and displacement of people including Scheduled Tribes (STs) in the State of Orissa and Chhattisgarh after construction of protective embankment
16. What is the estimated cost of Land acquisition and R&R cost for the project?
Estimated cost of Land acquisition and R&R cost for the project is 33858.45 Cr. as per 2013-14 price level
17. How many mandals and villages are affected by submergence
There are 2 districts (East Godavari and West Godavari) that are affected by submergence. From these 2 districts, overall 8 mandals are affected. 3 mandals are in East Godavari and 5 mandals are in West Godavari. These mandals are-
Totally there are 372 villages which will be affected by submergence.
18. What is the role of central agencies like CWC, CWPRS in the execution of the project?
Being a national project, CWC is the approving authority for all the design related aspects.
CWPRS is responsible for hydraulic model studies of the project to ensure that the project design is safe for implementation
19. What are the key benefits the project is likely to bring ?
Following are the key benefits which the state is likely to bring:
- Irrigation to 2.91Lakh ha. (7.2 lakh Acres)
- Hydro Power with installed capacity of 960 MW
- Diversion of 80 TMC of water to Krishna River
- Supply of 23.44 TMC of water for Visakhapatnam city
- Drinking water facility to 540 villages (28.5 Lakh population)
20. Is the irrigation benefits from the project available for only one crop or multiple crops in the year?
Water is planned for both Rabi and Khariff seasons. Multiple crops will be benefited by the Polavaram irrigation project. Water is planned to be served through 2 main canals. Left Main Canal (LMC) and Right main Canal (RMC).
84.808 TMC of water is planned to be utilized through LMC for irrigation purposes whereas 80.09 TMC of water is planned to be utilized through RMC.
21. What is the cost spent by State Government before it was declared as a national project
Total expenditure incurred on Polavaram project from inception to August 2017 is 12335.99 Cr. Out of this total expenditure, the expenditure incurred on the project by the state Government is about 5135.87 Cr till the project was awarded the national project status
Post project being awarded the national project status, all the expenditures is to be reimbursed by the Centre to the State Government
22. What is the total estimated cost of the project as per latest estimates?
Total estimated cost of the project as per 2010-11 price level is 16,010.45 Cr. Latest estimate as per 2013-14 price level is 58,319.06 Cr
23. What is the break-up of the cost?
||Cost as per 2013 - 14 Price level
(in Rs. Cr)
||LA and R&R
||Right main canal
||Left main canal
24. Why is the cost of the project increased from 2011 estimates?
The project cost has increased by approximately 42,000 cr out of which roughly 30,000 Cr increase is due to increase in the LA and R&R costs due to the enhanced compensation as per the new land acquisition act 2013.
There has also been some changes in the specifications of the project like the increase in the height of the coffer dam, use of jet grouting for coffer dam instead of sheet piling etc. Delay in project completion is also another reason due to which cost overrun has occurred.
25. What are the major obstacles of the project which have been overcome?
Major obstacles which have been overcome by the State government towards completion of the project are:
- 8 mandals in Telangana state which were coming under submergence has been transferred to AP state government thus making LA easier
- All the statutory clearances are in place
- Poject Funding has been sorted out as the project is awarded national project's status. The entire expenditure is now taken care by Government of India
- Predominant LA is completed up to 41.15 m (coffer dam level) . In East Godavari about 90% of LA is completed up to 41.15 m whereas in West Godavari almost 99% of LA is completed.
26. What are the various committees formed for monitoring the safety and program of the project
Various committees that have been formed for monitoring the project are as under:
- Masood expert committee- NWDA standing committee to overview the implementation of Polavaram Irrigation Project
- Environmental and R&R committee- Standing committee to monitor environmental and R&R aspects of the project
- Karkatta committee- National Green Tribunal (NGT) Special committee
- Expert committee- Project progress review
- Quality Audit Committee- To overview Quality aspects of the project and conduct quality audits every quarter.
27. How are the quality standards maintained in the project?
CSMRS is the quality enforcing body for the project. CSMRS is conducting quality audit quarterly.
To ensure day to day quality management at site, GoAP has deployed a quality control wing to monitor the quality aspects of the project.
In addition, a team of 3 experts (hydel project experts) is appointed and deputed to site full time by the Water resource department of GoAP to monitor the quality aspects of the project.
28. What is the unique machinery used for the construction of the project?
Some of the unique machinery deployed for the project are as under:
- Penta Concrete Ready Mix Batching Plants (240 Cum)
- Putzmeister 12 Cum surge Crete for Concrete pouring
- Concrete pouring Tele belts
- Putzmeister Agitors (9 cum Capacity)
- Water Chilling Plants
- Ice Making Plants
- Aggregate Cooling Plant
29. What is the Role of Polavaram Project Authority (PPA)?
PPA is the supervising body for the execution of the works and release of funds from the center.
30. What is the constitution of PPA?
PPA is constituted by a CEO, a Member Secretary and 2 Chief Engineers. The team is appointed by central government. PPA reviews the project regularly. Review meetings are conducted periodically to monitor the implementation of the project.
31. When did works in the Polavaram project commence?
Works in the Polavaram project commenced in 2005. The project is accorded National Status in the year 2014. Polavaram Project Authority formed in Jan 2015 under MoWR to expedite the progress of project.
32. What is the man power that is being deployed at site for the construction of the project
Current man power at site is approximately 3000 no. Out of which about 25% is technical staff and the balance 75% is non-technical workmen. The man power is being augmented as per the project requirement.
33. What are the major steps taken by the State Government to expedite the progress of works in the project?
Multiple agencies have been awarded contracts in order to take up multiple fronts and fast track the projects
Hon'ble CM conducts virtual review meetings every Monday and site inspection once in a month to take review the project progress and resolve the bottlenecks
State government is planning to make direct payment to sub-contractors to ensure smooth cash flow for sub-contractors. State government has created an imprest money account to overcome procedural delays in payments.
34. Are there any specialists and project advisors appointed by the State government for the execution of the project?
The Govt. has appointed several outside and experienced experts as a part of the Project Monitoring Unit to expedite the progress of works
These experts will be working full time at dam site. They will be part of the PMU and will assist in project management, construction supervision, quality control, construction planning and any other expert advice needed during the course of construction.
35. How is the project being monitored by the State Government?
The project is executed by the state government. The water resource department has deployed large team on project site for day-to-day monitoring and execution.
Central government has appointed various experts committees to review the implementation of the project.
Also PPA is reviewing the project progress regularly. Review meetings are conducted periodically to monitor the implementation of the project.
Government is also closely monitoring the project through weekly review meetings chaired by Hon'ble CM. These review meetings are held every Monday (virtual review every week and site inspection once in month)
36. What project monitoring methods are used in the project for expediting the implementation of the project?
There are many advanced project monitoring methods deployed for the project to expedite implementation of the project. Some of the specific project monitoring methods used are :
- Drone based monitoring is in place to review the overall progress of the project.
- Primavera program is used to track the project, assess the status of the project and revise the targets.
- Daily monitoring is in place through Whats app to keep a close eye on progress.
- Daily progress reports.
- S- curve is used to track the progress of the project.
- Issue register is maintained to identify the issues affecting the project progress. Their status is updated regularly to monitor the closure of these issues.
- Weekly review (Virtual as well as site inspection) meetings chaired by Hon'ble CM.
- Quality audits by CSMRS and Quality wing of WRD.
- Periodic visits by various expert committees from GoI.
- Daily monitoring by Project team, WRD headed by SE, Polavaram.
37. What are the safety measures being taken for the construction of the project?
All the necessary safety measures for construction like- Personal Protective Equipment's (PPE's) for site personnel, barricades, pathways, roads for vehicle movement, medical facilities, sign boards etc. are in place.
38. Is public allowed to visit Polavaram Project?
Yes. The pubic is allowed to visit the Polavaram dam site on all days of the week with prior consent of SE, Polavaram project.
The public may visit the dam site and witness the construction of the Project. Also public can see a model of the project and operational prototype of the Gate that is kept in the Polavaram dam site.