Tamilnadu Hydrology Project-II

Chief Engineer, WRDState Ground & Surface Water Resources Data Centre,

Chennai-600113

WB Final Supervision and Completion Mission of HP-IIat

Delhi7th May 2014

Overview

Tamilnadu HP-II

Achievements

Challenges

What more to be done(Within the Project Period)

Scoping for a Follow-on Project

Conclusion

Vaippar

Tamiraparani Basin

Agniar Basin

Gulf of Mannar

Tamilnadu HP-II…1. General Institutional

improvements2. DSS in 3 Basins3. HDA

Tamilnadu HP-II…

Hydrological Design Aids – Vision by TNDesign Flood Cumec

50 Years Return Period 170

100 Years Return Period 325

500 Years Return Period 580

Yield Available MM3

75% Dependability 2.6

60% Dependability 3.7

50% Dependability 5.4

Present Status – Financial

Component Amount ( cr)₹

Sanctioned Cost 36.30

Expenditure Upto Mar 2014 30.23

Likely Expenditure by May 2014 1.90

Cumulative likely Expenditure up to May 14

32.13

Abstract of Likely expenditure Rs in lakhs

Component As per RCT 2013 Exp 2006-2013 Exp 2013-14

Likely Exp2014-15(05/2014)

Total Probable Exp Percentage

Institutional Strengthening

1. I.A. Consolidation of HP I 310.08 227.36 70.38 0.00 297.74 96.0

2. I.B. Awareness, Dissemination and Knowledge Sharing 91.62 76.47 6.39 0.00 82.86 90.4

3. I.C. Implementation Support 1935.23 1463.76 306.24 125.84 1895.84 98.0

Vertical Extension

1. II.A. Hydrological Design Aids 57.49 52.39 4.21 0.00 56.60 98.5

2. II.B. Decision Support Systems 1286.63 515.52 300.59 63.85 879.96 68.4

3. II.C. Purpose-Driven Studies 0.00 0.00 0.00 0.00 0.00 0.0

Total 3681.05 2335.50 687.81 189.69 3213.00 87.3

Status of Reimbursement Claims

Item Amount( cr)₹

Expenditure incurred till Mar2014 30.23

Reimbursement Claimed 25.51Actual Reimbursement Received (CAAA) 20.27 Reimbursement Claimed (Dec - Feb 2014) (Clarification required as it is stated as adjusted against advance) 1.18

Component A: Institutional Strengthening

State-of-the-art WQ Lab equipment (Spectrophotometers, Digital Burette) are procured and productivity is substantially increased.

State-of the-art DGPS 3 sets(each 1 base+ 2rover) were procured to measure Geo coordinates of WRD structures and GCPs.

26 Geo Physical equipment were procured. Computer hardware(Computers and workstations)

and software (ArcGIS and ERDAS) were procured. Office equipment like Fire fighting, and Computer

peripherals like UPS, Printers, Plotters have been procured.

4 Jeeps and 1 car have been procured to aid field survey.

Component B: Vertical Extension

• Basin Information System for 3 DSS basins has been developed.

• All Hydrological data like Rivers, canals, tanks, soil, Landuse, Rainfall, climate, GWL in one GIS platform.

• Topography(DEM) from Cartosat –I Satellite Imageries in ERDAS.

• Command Area Maps under Irrigation tanks is digitized .• 10 years cropping pattern data collected and

documented.• 3D Aquifer Mapping for 3 River Basins is developed on

GIS from lithology .• Crest levels of Tanks, weirs , river cross sections in a

common datum. (MSL , WGS84) using DGPS. • DSS(Planning)

• Mike SHE model has been set up for 3 Basins of Vaippar, Tamiraparani and Agniar. A team of Engineers have been trained to develop SW/GW coupled dynamic Hydrological Models.

Major Physical Achievements

• 56 ARGs upgraded to TARG.

• 6 AWS upgraded to TAWS.

• 50 GD wells constructed for housing TeleGD equipment.

• 112 Piezometers constructed.

• DSS Unit established with latest Workstations and modelling software.

Benefits accured under HP II

• The real time telemetric rainfall data is uploaded in the web for public.

• Due to the procurement of latest WQ equipments the productivity of water sample testing has been drastically improved.

• The DGPS equipments were used to give a comprehensive solution to the reconstruction of WRD infrastructure such as weir etc and thereby provided a solution to the floods in Northern Chennai City..

• Using DGPS crest and sluice levels of tanks have been connected to MSL and disseminated to WRD .

• The newly procured Geo physical equipments have been used to find out the favorable zone for Artificial recharge in IAMWARM project.

• Using the ARC GIS software,We have been helping the CTC(cauvery Technical Cell) in preparation of maps for interlinking of rivers in TN.

Benefits accured under HP II ….continued

• We have helped the WRD in getting clearance from the Ministry of Environment for new projects.

• For the first time command area maps have been prepared form Google Earth and is likely to be integrated with Bhuvan.

• The Cartosat imageries procured under the project is likely to be used for the upcoming projects in the state.

• One seasonal planning model has been prepared for Pilavakkal system.

Lessons Learnt

• Latest technology equipment should be procured with 5 years AMC.

• An earlier start of DSS Consultancy would have benefitted all the IAs.

• No readymade code will readily handle our field conditions. A certain amount of customization is always required.

• Any applications developed should be sustainable and updated regularly, (eg. SWDES , GWDES does not work on Win8).

Post project plan for continuation of HP2 activities

• To Develop BIS for other Basins on the lines of Vaippar, Tamiraparani and Agniar Basins.

• To Develop and Customize the HDA for all 17 Basins with the pilot HDA developed in association with CWC.

• To extend the installation of Telemetric Stream flow measurement Stations in the tail ends of all major rivers and tributaries.

• To develop a state database of 3D sub soil aquifer mapping using 6000+ available exploratory bore well data.

• Development of State Soil Infiltration Map to facilitate Hydrological Modelling.

• PDS to be taken up on sea water intrusion and inland water quality affected areas in a phased manner.

• Studies on Climate Change• Upgrading the Feasibility Zone Map for Artificial Recharge

Structures with additional lithology data.

Challenges faced …

Minimal Support in development of HDA .

Complex hydrology & Hydro geology of TN basins with network irrigation tanks, which needs to focus on Groundwater.

Non Command Area Maps , crucial for our modeling, were developed from scratches.

Voluminous data collection in a limited period.(DGPS field survey points, Cropping pattern).

Non availability of imageries for preparation of landuse maps, we managed with Google Earth.

The DEM for model needs fine vertical accuracy ; We developed it from Cartosat-I imageries using DGPS Ground Control Points; It is a new technology for us and was a challenge in the beginning.

Present Status of HDA in Tamilnadu

• Tamilnadu has sent our HDA requirements to CWC categorically.

• TN has already requested the CWC and Consultants to develop HDA for one pilot basin in Tamilnadu.

• Trainings have been given to the officers dealing with HDA. Their feedback needs to be taken into consideration during further HDA development.

Data and Dissemination

• Revenue : 18.6 lakhs

• No. of Data users : 1002

Conclusion

The concepts & tools developed under HP-II like DSS, HDA will be used in managing scarce water resources in demanding situations involving

uncertain Rainfall scenarios,

unreliable Inter State River releases,

crop failures and climate change.

The DSS will be the Technological backing of the State Water Resources Management Agency. (SWaRMA).

Hydrological Design Aid will be used to ensure consistent assessment of Design Flood and Water Availability across the water agencies and facilitate safe/economic design of water structures.

The Govt have been appraised of the importance of RTDAS and it is under the perusal of the Govt.

TN appreciates the HP-II and … a Follow-on Project as well.

Thokkalikadu Weir

THANK YOU

Present Status of DSS GoalsComponent Status

Goal1For a given Monsoon prediction, which part of the basin can go in for Wet/Dry crop?

1. SW/GW coupled MIKE SHE model is progressing; The tank system is being incorporated. Model to be calibrated and validated.

2. For a given Monsoon prediction, recommended subbasins for Wet/ Dry crop will be shown as a GIS Map.

Goal2How much for different sectors? How much from SW and how much from GW and when?

1. Mike SHE and MIKE Basin models are being set up.

2. Upon validation of the models, allocation for different sectors will be assessed.

Goal3Shall we invest in Artificial Recharge Structures in a particular location of the basin? What are the impacts on GW and SW?

1. MikeSHE model is being set up.

2. It has 3D subsoil aquifer details.

3. Upon calibration, the model will show the sites fit for ARS and their impact on both the GW & SW.

Goal4Whether to grant a Groundwater abstraction permit? How much?

1. MikeSHE model will quantify the influence of new wells on the GW.

2. It will give a future framework for assessing GW and impact of new wells.

3. This framework will be deliberated by the stakeholders like CGWB.

4. Upon scrutiny and consensus, the framework will assist the process of GW permits.

Why Decision Support System?

2004 2005 2006

2007 2008 2009

IMD Predicts an Above or Below Normal North-East Monsoon!

How DSS can help us?

2010

Operational Structure of DSS

RDBMS Internet / WANInternet / WANInternet Server

WRD Agri Revenue

Policy makers Technocrats Farmers

State Water

Authority

HDA DSS

Basin Info System

in GIS

Public

Drinking

Input Data

Output Reports

Industry

Data Sharing

Towards a Multi-criteria Collaborative Decision Making in Water Resources Management in a River basin

Architecture of Tamilnadu DSS

Level 1

Level 2

Level 3

Administrator (1)

SG&SWRDC (5) / SWaRMA (10)

Privileges

INPUT Add/Edit data to

selected tables, Feedback

WRD (100)TWAD (50) Agri (50)Industries ( 50)Collectors (32)Tahsildars ( 215)WUA (4100 + 8000) +RTDAS

CM (1)Ministers (30)Secretaries (30)Chief Engineers (30)+Public (no limit)

OUTPUT View MikeSHE results, Run Mike Basin

Simulations

INPUTFeedbac

k

OUTPUTView and download Data Text/Graphic/ Map Reports (PDF), for different users levels.

Stakeholders

INPUT Control

Administration

Back-upRecoveryImproveme

nt

OutputFeedbac

k

Hired Web/Database ServerHired Web/Database Server

DSS programme till Mar 2014

1. MIKE SHE model for vaipar river basin wTN requests DSS Consultant’s Support for atleast 1 year more From Sep 2013. (Requirements sent to NIH categorically. See.)

2. Customization Screens designed and sent to DSS Consultants.(see)

DGPS Survey at Vaipar Basin

Showcase HP-II to the Government …DSS developed EXCLUSIVELY for SWaRMA

Vaipar Basin Topography Vaipar Rivers, Tanks, Ayacuts Vaipar Basin Rainfall

Evapotranspiration Geological Layers Pumping Wells GWL

GWL

DSS Progress - Tamiraparani

DSS Progress - Agniar

Action Plan for Balance expenditure ( ₹ 32.82 cr.)

Activity Amount (₹lakhs) Target

RTDAS 188.15 Mar-14

Office Equipment 44.10 Nov-13

Dataset / Software 49.20 Dec-13

Data Collection – Goods 101.72 Mar-14

Data Collection – Works 102.18 Mar-14

IT Hardware 47.00 Dec-13

Others 27.15 Apr-14

Sub Total- Investment 559.50

Salary 270.00 May-14

Sub Total - Recurring Cost 270.00

TOTAL 829.50

Action Plan for Balance expenditure ( ₹ 36.30 cr.)

Activity Amount (₹lakhs) Target

RTDAS 363.16 Mar-14

Office Equipment 44.10 Nov-13

Dataset / Software 49.20 Dec-13

Data Collection – Goods 199.97 Mar-14

Data Collection – Works 158.86 Mar-14

IT Hardware 47.00 Dec-13

Others 44.15 Apr-14

Sub Total- Investment 906.43

Salary 270.00 May-14

Sub Total - Recurring Cost 270.00

TOTAL 1176.43

What more to be done?SlNo Activity By Target

DSS

1 DSS - Mike SHE model validation TN, DHI 31-03-2014

2 DSS – Interface development(See)(Screens) TN, DHI 31-03-2014

3 DSS- Web Hosting TN 30-04-2014

Field Survey TN 31-05-2014

RTDAS

4 RTDAS(river flow) – Gauge well TN 28-02-2014

5 RTDAS(river flow) – Equipment TN 28-02-2014

6 Web Hosting(river flow, GWL) TN 31-03-2014

HDA

7 HDA for a small basin TN, CES 28-02-2014

Others

8 Minor Procurements TN 31-12-2013