Presentation on theme: "Real-time Data Collection in Flood Warning Systems"— Presentation transcript:
1Real-time Data Collection in Flood Warning Systems
2Flood Warning System Benefits Flood warning systems help reduce flood damages through early detection of potential flooding and the issuance of flood warnings.Upon receipt of flood warnings, those individuals affected initiate response activities designed to protect life and property.As the time to flood detection and warning decreases, the time available for response increases.This is a key objective of the flood warning system.
3Flood Warning System Components Real-time data collection of rainfall, water level, and weather information.Critical level detection and alarm.Automated data dissemination.Flood forecasting using watershed and channel models.Inundation mapping using GIS.
4Flood Warning System Network Diagram RemoteStationRemoteStationInternetRadioReceiverData CollectionBase StationWeb PageServerPrinterPagerWarningDatabaseDatabaseForecastWorkstationTelephone JackDatabase
5Real-time Data Collection Remote stations measure rainfall, water level, weather, and snow parameters.Remote data is transmitted to a base station computer.Base station software records data, checks for validity, tests for alarm criteria, and sends data to other hosts for analysis.
6Rainfall Station Tipping bucket rainfall sensor Electronics package counts gauge tipsRadio transmits data to base station
9Water Level StationShaft encoder connected to float measures changes in water level.Pressure transducer measures water pressure to determine water level.Electronics package counts samples level sensor data and smoothes readings.Radio transmits data to base station.
20Snow StationAdd a weighing rain/snow sensor to a weather station that measures the water equivalent of snow.Measure snow depth with an ultrasonic level sensor.
21Base Station Base station software receives data from remote stations. Checks for data validityTests for alarm criteriaDisplays data to usersSends data to other hosts for analysis.Pages operators when sensor data reaches alarm levels.
23Public Data Viewing on Web Pages Data is exported from the base station to web page servers for viewing by dispatch operators, managers, and the public.Map displays show the gauge locations and readings.Data display is color coded to show critical levels.Hydrologic threat scores are computed to simply operator analysis of the data.Reports organize the data for time analysis.Plots show data trends over time.