REGIONAL ASSOCIATION VI

Task Team on Hydrology: Overview of practices in operational flood forecasting and early warning of National Hydrological Services

Only for internal use of NHMS/NHS of WMO RA VI. Do not spread the link.
NHS/NHMS - overview
QUESTIONS: 1. Organization status 2. Legal framework
Number Average area
Quality checking of real-time data from the gauging stations Processing of forecasts (publishing forecast results and derived products) Calculation of hydrological forecast Preparing and issuing of warnings. Dissemination of warnings for all users. Information support for media, civil protection and stakeholders.
5. Cooperation with meteorologists 6. Hydrologists in charge 7. Operation of gauging stations 8. Hydrological forecasting model
River stage and river discharge at forecasting points River discharge for any spot along the river Extent of flooded area. (Hydraulic modelling). Ice jams. Water level in lakes. Water level of ground water. Urban flooding.
Short-range forecasts Medium-range forecasts
11. Hydrological forecast updating 12. Time step of the hydrological model 13. Spatial resolution 14. Probabilistic forecast
Rainfall-runoff model Snow-melting model Channel-routing model Reservoir model Hydraulic model
16. Rainfall-runoff model type
Manual checking and correcting the input data. Manual adjusting of initial conditions. Manual adjusting of model parameters. Manual adjusting of model outputs (for example flow hydrograph). The model is fully automated. It doesn't require human interaction.
18. Forecast evaluation 19. Development of models 20. Challenges 21. Question for next Q.

QUESTION:

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