mapping of flooding points and rainfall data using arcgis ...€¦ · contacts:...

Mapping of Flooding Points and

Rainfall Data using ArcGIS

Rio de Janeiro City - RJ - Brazil

2014-2015 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

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

2

MAPPING OF FLOODING POINTS AND RAINFALL DATA USING ARCGIS

RIO DE JANEIRO CITY - RJ - BRAZIL

2014-2015 EVENTS

- The Phenomenon 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

Types of Rain

3

- The Data Source:

Satellite Images

Lightning Detectors

Water Level Meters

Radar Images

Rain Gauges Field Operators Teams



2014-2015 EVENTS

4

- City Topography and Hydrography:



2014-2015 EVENTS

5

- The Necessity of Mapping:

Where to

proceed

dredging?

For which place

prepare a

drainage

project?

To which place send

the maintenance team?



2014-2015 EVENTS

6

Limitations due to Scarcity of

Resources!

What are the Criteria for Setting the

Priorities of Action?

- The Necessity of Mapping:



2014-2015 EVENTS

Where to

proceed

dredging?

For which place

prepare a

drainage

project?

To which place send

the maintenance team?

7

- Involved Agencies and Data Collection Mode:

Field Teams

Operators

Rain Gauges

(Pluviographs)

Flooding Data Rain Data



2014-2015 EVENTS

8

- Mapped Information:

No DATE START (DAY – HOUR) END (DAY – HOUR)

1 02/01/2014 02/01/2014 00:45 02/01/2014 05:45

2 14/01/2014 13/01/2014 22:30 14/01/2014 02:15

3 16/01/2014 16/01/2014 18:15 16/01/2014 23:45

4 16/02/2014 16/02/2014 16:00 16/02/2014 23:30

5 07/03/2014 07/03/2014 14:45 08/03/2014 22:30

6 22/03/2014 22/03/2014 19:15 23/03/2014 19:15

7 14/04/2014 14/04/2014 07:40 16/04/2014 09:10

8 24/04/2014 24/04/2014 16:10 25/04/2014 07:35

9 28/04/2014 28/04/2014 01:13 28/04/2014 08:50

10 30/06/2014 30/06/2014 19:30 30/06/2014 23:15

11 08/07/2014 08/07/2014 13:00 09/07/2014 07:15

12 10/07/2014 10/07/2014 11:45 11/07/2014 23:00

13 13/08/2014 13/08/2014 15:45 14/08/2014 06:00

14 04/09/2014 03/09/2014 02:00 03/09/2014 08:00

15 26/11/2014 26/11/2014 06:45 27/11/2014 06:00

16 27/11/2014 28/11/2014 07:15 29/11/2014 00:45

17 05/12/2014 04/12/2014 20:30 05/12/2014 21:00

18 13/12/2014 13/12/2014 13:15 14/12/2014 02:30

19 23/12/2014 23/12/2014 09:15 24/12/2014 09:10

20 31/12/2014 31/12/2014 15:00 31/12/2014 21:00

Rainy Days

in 2014



2014-2015 EVENTS

9


No DATE START (DAY – HOUR) END (DAY – HOUR)

1 22/01/2015 22/01/2015 - 17:15:00 22/01/2015 - 23:00:00

2 28/01/2015 28/01/2015 – 15:30:00 28/01/2015 - 17:00:00

3 31/01/2015 31/01/2015 – 00:00:00 31/01/2015 – 04:15:00

4 01/02/2015 31/01/2015 – 12:45:00 01/02/2015 – 12:30:00

5 02/02/2015 02/02/2015 – 04:15:00 02/02/2015 – 22:00:00

6 06/02/2015 06/02/2015 – 13:30:00 06/02/2015 – 17:15:00

7 07/02/2015 07/02/2015 – 13:30:00 07/02/2015 – 19:45:00

8 14/02/2015 14/02/2015 – 17:45:00 15/02/2015 – 01:30:00

9 15/02/2015 15/02/2015 – 16:15:00 16/02/2015 – 00:45:00

10 17/02/2015 17/02/2015 – 16:00:00 17/02/2015 – 23:00:00

11 07/03/2015 07/03/2015 – 17:45:00 08/03/2015 – 00:30:00

12 18/03/2015 18/03/2015 – 19:00:00 18/03/2015 – 22:15:00

13 22/03/2015 22/03/2015 – 14:30:00 23/03/2015 – 04:30:00

14 29/03/2015 29/03/2015 – 18:00:00 30/03/2015 – 04:00:00

15 05/05/2015 04/05/2015 – 20:00:00 05/05/2015 – 09:15:00

16 08/05/2015 08/05/2015 – 01:45:00 08/05/2015 – 06:45:00

17 28/05/2015 28/05/2015 – 16:30:00 28/05/2015 – 20:15:00

18 24/06/2015 24/06/2015 – 04:15:00 24/06/2015 – 16:15:00

19 03/11/2015 02/11/2015 – 18:00:00 03/11/2015 – 09:45:00

20 04/11/2015 04/11/2015 – 16:30:00 05/11/2015 – 03:15:00

21 07/11/2015 06/11/2015 – 17:00:00 07/11/2015 – 09:30:00

22 08/11/2015 07/11/2015 – 11:30:00 08/11/2015 – 05:45:00

23 21/11/2015 21/11/2015 – 05:00:00 21/11/2015 – 12:15:00

24 23/11/2015 23/11/2015 – 03:00:00 23/11/2015 – 07:00:00

25 28/11/2015 28/11/2015 – 18:45:00 28/11/2015 – 23:15:00

26 29/11/2015 29/11/2015 – 14:45:00 01/12/2015 – 02:45:00

27 07/12/2015 06/12/2015 – 19:15:00 07/12/2015 – 08:15:00

28 12/12/2015 12/12/2015 – 18:00:00 12/12/2015 – 23:30:00

Rainy Days

in 2015



2014-2015 EVENTS

10


I

Intensity

(mm/h)

(mm/15min.)

F

Frequency

(years)

D

Duration

(min.)

Rain Data



2014-2015 EVENTS

Alert when

I>15mm/15min!

Alert when D

is short for

high I!

Alert when

F rain> F conduit!

Galleries for Rainwater

(F conduit=10)

Channels

(F conduit=25)

11


Flooding Data

(Sent by Field Operators Teams)



2014-2015 EVENTS

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Rain Gauges

Data



2014-2015 EVENTS

13

Rain Data

X

Flooding Data

14

- Obtained Information with Mapping:

Pluviometric

Indexes



2014-2015 EVENTS

15




2014-2015 EVENTS

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- 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 Frain<10 years and channels with Frain<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



2014-2015 EVENTS

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



2014-2015 EVENTS

18

- Future Implementations:

App for smartphones in Ios / Android / Windows language for images and datalogging

related to the points of flooding.

App that allows field operator teams to communicate with the RJ Operational Center and make

real-time mapping of points of flooding (using Collector)



2014-2015 EVENTS

19

Thanks for Your Attention!

Contacts: [email protected]

nelson.lima@[email protected]

+55 21 2088-0673

Rio de Janeiro–RJ–Brazil

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

mapping of flooding points and rainfall data using arcgis ...€¦ · contacts:...

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