Mapping of Flooding Points and Rainfall Data using ArcGIS Rio de Janeiro City - RJ - Brazil Events
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1 RIO DE JANEIRO CITY HALL MUNICIPALSECRETARY OF SANITATION AND WATER RESOURCES - SMAR WATER SANITATION AND DRAINAGE AUTHORITY - RIOÁGUAS BOARD OF STUDIES AND PROJECTS MANAGEMENT OF RESEARCH AND TECHNICAL SUPPORT Mapping of Flooding Points and Rainfall Data using ArcGIS Rio de Janeiro City - RJ - Brazil Events Nelson Luiz de Andrade Lima Civil Engineer Manager of Research and Technical Support BSP RioÁguas Prof. Veiga de Almeida University UVA Faculty of Civil Engineering
2 2 - The Phenomenon of Rain: Types of Rain Convective Precipitation great intensity short duration small areas Frontal Precipitation medium intensity long duration large areas Orographic Precipitation low intensity high duration small areas
3 3 - The Data Source: Satellite Images Water Level Meters Lightning Detectors Radar Images Rain Gauges Field Operators Teams
4 4 - City Topography and Hydrography:
5 5 - The Necessity of Mapping: Where to proceed dredging? For which place prepare a drainage project? To which place send the maintenance team?
6 6 - The Necessity of Mapping: Where to proceed dredging? Limitations due to Scarcity of Resources! For which place prepare a drainage project? What are the Criteria for Setting the Priorities of Action? To which place send the maintenance team?
7 7 - Involved Agencies and Data Collection Mode: Field Teams Operators Rain Gauges (Pluviographs) Flooding Data Rain Data
8 8 - Mapped Information: N o DATE START (DAY HOUR) END (DAY HOUR) 1 02/01/ /01/ :45 02/01/ : /01/ /01/ :30 14/01/ : /01/ /01/ :15 16/01/ : /02/ /02/ :00 16/02/ : /03/ /03/ :45 08/03/ : /03/ /03/ :15 23/03/ : /04/ /04/ :40 16/04/ : /04/ /04/ :10 25/04/ : /04/ /04/ :13 28/04/ : /06/ /06/ :30 30/06/ : /07/ /07/ :00 09/07/ : /07/ /07/ :45 11/07/ : /08/ /08/ :45 14/08/ : /09/ /09/ :00 03/09/ : /11/ /11/ :45 27/11/ : /11/ /11/ :15 29/11/ : /12/ /12/ :30 05/12/ : /12/ /12/ :15 14/12/ : /12/ /12/ :15 24/12/ : /12/ /12/ :00 31/12/ :00 Rainy Days in 2014
9 9 - Mapped Information: N o DATE START (DAY HOUR) END (DAY HOUR) 1 22/01/ /01/ :15:00 22/01/ :00: /01/ /01/ :30:00 28/01/ :00: /01/ /01/ :00:00 31/01/ :15: /02/ /01/ :45:00 01/02/ :30: /02/ /02/ :15:00 02/02/ :00: /02/ /02/ :30:00 06/02/ :15: /02/ /02/ :30:00 07/02/ :45: /02/ /02/ :45:00 15/02/ :30: /02/ /02/ :15:00 16/02/ :45: /02/ /02/ :00:00 17/02/ :00: /03/ /03/ :45:00 08/03/ :30: /03/ /03/ :00:00 18/03/ :15: /03/ /03/ :30:00 23/03/ :30: /03/ /03/ :00:00 30/03/ :00: /05/ /05/ :00:00 05/05/ :15: /05/ /05/ :45:00 08/05/ :45: /05/ /05/ :30:00 28/05/ :15: /06/ /06/ :15:00 24/06/ :15: /11/ /11/ :00:00 03/11/ :45: /11/ /11/ :30:00 05/11/ :15: /11/ /11/ :00:00 07/11/ :30: /11/ /11/ :30:00 08/11/ :45: /11/ /11/ :00:00 21/11/ :15: /11/ /11/ :00:00 23/11/ :00: /11/ /11/ :45:00 28/11/ :15: /11/ /11/ :45:00 01/12/ :45: /12/ /12/ :15:00 07/12/ :15: /12/ /12/ :00:00 12/12/ :30:00 Rainy Days in 2015
10 10 - Mapped Information: Rain Data I Intensity (mm/h) (mm/15min.) Alert when I>15mm/15min! Alert when Alert when D is short for high I! D Duration (min.) F Frequency (years) F rain > F conduit! Galleries for Rainwater (F conduit =10) Channels (F conduit =25)
11 11 - Mapped Information: Flooding Data (Sent by Field Operators Teams)
12 12 - Mapped Information: Rain Gauges Data
13 13 Rain Data X Flooding Data
14 14 - Obtained Information with Mapping: Pluviometric Indexes
15 15 - Obtained Information with Mapping:
16 16 - Obtained Information with Mapping: - Points of flooding in areas I<15mm /15min - Points with supposedly high rainfall intensity (by the alert criteria), but no floods - Floods in places attended by raiwater galleries with F rain <10 years and channels with F rain <25 years - Ocurrence of floods is associated with a distributed rainfall throughout the territory of the city, but with an average intensity lower than the warning index - Rain gauges whose area of influence had more points of flooding - Points of flooding that had never been indentified before, with frequency index for each point - Indication of rainfalls intensity associated with each of the points of flooding formed
17 17 - Future Implementations: - Inclusion of the digital elevation model processed by NISR and TOPODATA - Altimetry (three-dimensional mapping of terrain) and hydraulic data associated with rivers and channels - Flow direction of rivers and channels - Surface flow coefficients (runoff) from the land use map - Inclusion of the drainage network (as built) - Set rainfall indexes to rivers and channnels basins - Influence of the tides in the rivers and channnels outflows - Inclusion of the RioÁguas monitoring system (hydrometric network) - Extension of the regions affected by floods - Temperature, relative humidity and wind speed just before the rainy event - Hydrological Analysis with Spatial Analyst - Integration between different archiving systems: SISARQ, SigÁguas and Geovias - Drainage network extraction, algebra maps and watersheds delimitation - Indication of alternate routes of traffic considering the flood points
18 18 - Future Implementations: App that allows field operator teams to communicate with the RJ Operational Center and make real-time mapping of points of flooding (using Collector) App for smartphones in Ios / Android / Windows language for images and datalogging related to the points of flooding.
19 19 RIO DE JANEIRO CITY HALL SECRETARY OF SANITATION AND WATER RESOURCES - SMAR FOUNDATION INSTITUTE OF MUNICIPAL WATERS - RIOÁGUAS BOARD OF STUDIES AND PROJECTS MANAGEMENT OF RESEARCH AND TECHNICAL SUPPORT Thanks for Your Attention! Contacts: nelson_lima@hotmail.com nelson.lima@1968@gmail.com Rio de Janeiro RJ Brazil
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