Planning and Management of Water Resources in a Climate Change Perspective And

2. 9th Session of the Forum on RegionalClimate Monitoring Assessment and Prediction for ASIA (FOCRAII) Beijing, China 08-10 April,2013

3. Planning and Management of Water Resources in a Climate Change Perspective • And • Comparison of results of Hydrological Models used by PAKISTAN • By • Muhammad Ajmal Shad • DirectorPakistan Meteorological DepartmentFlood Forecasting Division (FFD)Lahore-Pakistan.

4. Introduction Features and Problems for the models in individual Rivers Results of the Models Conclusion Scheme of presentation

5. Responsibilities of Flood Forecasting Division (FFD), Lahore FFD of the Pakistan Meteorological Department plays a pivotal role in the entire flood mitigation process. Hydrometeorological data from the various national and international sources is received in this office which is then processed to produce flood forecasts and warnings to be disseminated outwards to various national organizations

6. HYDROMETEOROLOGICAL SERVICES AND FLOOD FORECASTING Flood Forecasting Division (FFD) Lahore is a specialized unit of PMD for this purpose. • Responsibilities • i. Flood Forecasting • ii. River stream flow forecasting • iii Water availability Forecast for Dams • iii. Assisting Water Management at Dams specially during Monsoon

7. Burning of fossil fuels due to human activities has leads to increase in greenhouse gases • Climate of the globe is warming • Frequency of high floods are expected to increase • Extreme climate events badly affect the economy of the world • Pakistan’s economy highly depends on the water resources of Indus river system

8. The rivers in Pakistan are distinguished with complex topography, diverse climate and varied morphology which produces specific hydrological characteristics and highly variable discharge in rivers. • Difficult orography in northern parts of the country has strong influence on the meteorological situation of the region which ultimately greatly affects river flow.

11. Floods In Pakistan • Summer Floods (Monsoon Season) • Winter Floods (Due to strong westerly waves) • Flash Flooding (High intensity of rainfall over mountainous region) • Urban/Coastal Flooding etc

13. FLOOD MODELS

14. Flood forecasting system of Pakistan is based upon two major components i.e. computerized mathematical models and regression equations procedure of flood forecasting

15. FEWS MODEL • Sacramento Rainfall Runoff Model (SAMO) • SOBEK Routing Model • CLS constraint Model • Other Models Models being used in FFD

16. Sacramento Rainfall Runoff Model (SAMO) + SOBEK Routing Model Flood Early Warning System (FEWS)

17. Five Modules of FEWS MODEL • Rainfall Measurement • River Gauge Measurements • Forecast Input Data • Simulation Inputs • Simulation Results

18. FORECASTED RAINFALL • Automatically pickup from Ugrib file, downloaded from www.ugrib.us • Or • If not available than feed manually Discharge Data Discharge of Tarbela, Kabul, Khairabad, Soan, Warsak, Chakdra PMD RAINFALL CHITRALSAIDUSHARIF, KALAM, DIR, PESHAHWAR, ISLAMABAD, MURREE, KOHAT, CHERAT, RISALPUR TELEMETRIC RAINFALL CHAKDARA,WARSAK,NOWSHERA,ATTOCKKHAIRABAD, DHOKPATHAN,RASHIDABAD(KALPANI), TANDA DAM, GHARIALA(Haro River) FEWS MODEL Forecast for Kalabagh

19. kalabagh

21. Chashma

23. Taunsa

25. Guddu

27. Sukkur

29. kotri

31. COMPARISON OF FEWS Model & ACTUAL IN CURRENT FLOOD SEASON

32. RIVER INDUS: 1.The FEWS Model was run day by day w.e.f 15.06.2010. The Catchments of Indus River and its tributaries received severe rainfall resulting flood peak of exceptionally high magnitude in River Indus and its tributaries was experienced..The Maximum discharge of 6,12,800 Cs on 30-07-2010 at 0500 and 5,50,000 Cs on 10-08-2010 at 0900 were released from Down stream of Tarbela. Rainfall runoff and routing model for Tarbela Upstream and Kabul River has not been developed and incorporated in the Fews Model. Therefore, Fews Model does not generate forecast of Upstream Tarbela and for Kabul River. 2.The gauge at Nowshera on River Kabul was washed away on 29/07/2010 at 18:00 hrs. and data was not received upto 05/08/2010 of 06:00 hrs.

35. Evaluation of FEWS Model Performance and Operational Real-Time Flood Forecasting (Flood Season 2011)

36. Discrepancies: 1: The preprocessing Data requires enough time to run the Model. 2: The causing of crashing of the model are not fully defined. 3: The Catchments of FEWS model are not overlay with the radars Catchments. 4: The Grid display modules are not function able (Inundation Maps). 5: Some times U-gribgives negative values of forecasted rainfall which crashes the FEWS Model. 6: Incase of no rainfall, some times FEWS shows negative discharges at the rim stations . 7: The Help in the tool bar of FEWS Model is not functionable.

37. 6. U-gribNegative Value Should be automatically filter. • 7. The Source Code of the model should be provided to PMD. • As per NESPAK 30 days forecasted hydrograph value is required to obtain 30 days forecast, the forecasted days is minimized, up to 7 days. Because u-gribgives QPF for 7 days. • 9. Help module may be activated

38. Constrained Linear System (CLS)

39. Rainfall/runoff model for the catchment areas above the rim. Stream flow routing model for the river basin, down steam, below the rim station.

40. Major Inputs of CLS model Meteorological data Actual rainfall Quantitative Precipitation Forecast(QPF) Radar data(QPM) Hydrological data River base flow data for last 10 days Real time data

41. Evaluation of CLS Model Performance and Operational Real-Time Flood Forecasting (Flood Season 2010-12)