06-GISforSavingLives-ppt-RoyolChitradon

righteousgaggleData Management

Jan 31, 2013 (4 years and 9 months ago)

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1

Modeling Applications:

Risk Management of Water Resources

Hydro and Agro Informatics Institute

Ministry of Science and Technology

2

Content

1.

Internet GIS

2.

Implementation

3.

Case Study

3


2006

2007

2008


Internet GIS




Image slicer



Spatial

Functions



XMLParser




GIS
-
MIS V.1.0

GIS
-
MIS V.1.1

GIS
-
MIS V.1.2


SVG files


Z profiles


Simplify


Level 1


SVG files


Z profiles


Basic control


table


IGIS GUI


Simplify


GeomUnion


(Time
-
D)


Level 1


Many images


(one time)


Display z values


Display z values


Area calculation


Time
-
D Prototype


SVG files


Z profiles


Control table


support pyramid


model


Generate IGIS GUI


Simplify


GeomUnion


(Time
-
D)


Other spatial


operators


Level 1


Many images


(one time)


Other levels


Display z values


Area with height


calculation


Display Time
-
D


Wikipedia

Development of GIS
-
MIS


4

Internet GIS at HAII

MYSQL

Project Database



IGIS



Back Office

SVG File

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Reports

MIS

&

IGIS

User

Web Server

HAII

DB

PostgreSQL

GIS

Database

DB

XML Parser

HAII Officer



IGIS



Back Office

SVG File

SVG File

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Reports

MIS

&

IGIS

User

Web Server

HAII

DB

PostgreSQL

GIS

Database

XML Parser

HAII Officer

5

Rainfall, collected rain water, and their variability

Annual rainfall statistics of 2002, 2005
-
2008



Region

Rainfall

Mm3

Max Variability of
rainfall

Collected

Mm3

Collected as %
of rainfall

Max Variability of
Collected as

% of rainfall

Central & West

120,197

8.5%

15,214

12.7

11%

North

177,264

8%

15,128

8.5

28%

Northeast

260,557

10%

9,064

3.5

22%

South

208,364

51%

5,855

3.1

34%

East

63,155

12%

807

1.3

55%

Nation
-
average

780,474

4%

46,069

5.9

17%

6

The distribution of annual rainfall

averaged from 1950 to 1997



Flood and Drought Map in 2006

7

Gulf of Thailand

7

15

14

5

4

3

6

1

2

10

12

11

13

Eastcoast Gulf basin



15 areas


Bang Pra

Reservoir

Dok Krai

Reservoir

8

9

Prasae

Reservoir

Nong Pla Lai

Reservoir

Klong Yai

Reservoir

8

Water Balance Model

Irrigated
area

Unirrigated
area

Monthly precipitation (P
i
)

Runoff Model

Runoff (R
i
)

Runoff (R
i
)

Supply (S
i

=
R
i

+
Up
i
)

Upstream
inflow
(
Up
i
)

Supply (S
i

=
R
i
)

S
i



D
i

Monthly
Water
Demand (D
i
)

Monthly
Water
Demand (D
i
)

S
i



D
i

Surplus

Deficit

Surplus

Deficit

Unirrigated
area

Qout
i

Storage

St
i
=(Qin
i

Qout
i
)

St
i
-
1

Qin
i
=0.3(S
i

D
i
)

Qin
i

Balance

B
i

= S
i

D
i



Balance

B
i
=S
i

D
i

Balance

B
i
=S
i

D
i

Qin
i

Balance

B
i
=(
S
i
+Qout
i
)
-
D
i

Downstream
Outflow (Dn
i
)

9

สมดุลน ้ำ

(
ล้ำน

ลบ
.

.)
พื

นที่ชป
-
พื

นที่

3
ลุ่มน ้ำคลองใหญ่เหนืออ่ำงคลองใหญ่
-2
0
2
4
6
8
เม
.

.

.

.
มิ
.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.
มี
.

.
ปีน

ำมำก
2549
ปีปกติ
2550
ปีน

ำน

อย
2547


Balance

= Supply



Demand



Analyze risks based on
Magnitude

of droughts & floods (Mm3) for all
water situations

-

Wet years

-

Normal years

-

Dry years

Gulf of Thailand

7

15

14

5

4

3

6

1

2

10

12

11

13

Bang Pra

Reservoir

Dok Krai

Reservoir

8

9

Prasae

Reservoir

Nong Pla Lai

Reservoir

Klong Yai

Reservoir

Monthly water balance for

irrigated area above Klong Yai Reservoir

Wet year 2006

Normal year 2007

Dry year 2004

April
-

March

10

Risk Analysis for Drought and Flood

4
Study Areas



Chee River Basin



Lower Northern Basin




Mekong Basin



Eastern Coast Basin


11

Flooding Area

Drought Area

Chee River Basin

Risk Analysis for Drought and Flood

Highest Risk


Very High Risk

High Risk

Highest Risk


Very High Risk

High Risk

12

List
the areas

in order of
p
riority


Chee River Basin

Highest Priority

Very High Priority

High Priority

13

Area
-
Based Policy for Risk Mitigation

Chee River Basin

Area
-
Based Measures

1.
Reservoir Network

2.
Capacity Increase

3.
New Reservoirs

4.
Distribution Improvment

5.
Water Diversion

6.
Farm Ponds

7.
Headwater Conservation

8.
Agricultural Calendar

9.
Community
-
Based
Management

10.
Natural Water Resource
Improvement

11.
Collaborative Teamwork

12.
Water Education

13.
Information System
Development

14

Risk assessment from monthly water balance

for Eastcoast Gulf basin


Flood risk map




Drought risk map

15

Policy
-
based priority map

for water management

of Eastcoast Gulf basin

16

Management to cope with variability

in space & time

Country Level

Govt.

Agency

Local
Adminin.

Community

Inter Basin

Quantitative
Goal


Water Security


Water Balance

Basin

Sub Basin

City/

Community

Qualitative
Goal


Usage Efficiency


Water Allocation

Macro
-
management

Micro
-
management

Lean Management

Risk Management

17

Risk management: Local measures for Eastcoast
Gulf basin

Area

Maximum water
shortage

(Mm
3
)

Maximum

over supply

(Mm
3
)

Measures

Irrigated

Rain
-
fed

All areas

Local measures

Regional measures

1. West Rayong basin
-

Mab Ta Phut

1.21

16.29

46

Development of new reservoirs,
Development of water
distribution system

Conservation of headwaters

and use of check dams,

Community water
management

2
.
Klong Yai basin
below

3 Reservoirs

No
problem

32.04

226

Retention basins,

Trans
-
boundary water transfer,

Adjustment of cropping calendar

Rehabilitation of water
resources

3
.
Klong Yai basin
above Klong Yai
Reservoir

2.06

26.40

34

Development of new reservoirs,
Development of water
distribution system

Conservation of headwaters

and use of check dams,

Community water
management

4. Klong Yai basin
above Nhong Pla Lai
Reservoir

4.06

43.33

52

Cascade reservoirs,

Increase of

water reservation
capacity,

Development of new
reservoirs,

Development of water
distribution system, Retention
basins,

Adjustment of cropping calendar

Rehabilitation of water
resources

5
.
Klong Yai basin
above

Dok Krai Reservoir

3.39

36.17

37

Trans
-
boundary water transfer,
Development of new reservoirs,

Development of water
distribution system

Conservation of headwaters,
Rehabilitation of water
resources, Community water
management

18

18



Lower chi river & area where tributaries
meet have highest flood risks.



Lower Ping, Wang, Yom, and Nan
basins have highest flood risks

Risk maps of other basins



Chi River Basin, NE Thailand




Lower north basin

Example flood risk maps

Highest Risk


Very High Risk

High Risk

19

19


Chee River Basin, NE Thailand



Lower Northern basin



Area above Ubonrat dam & middle Chi
basin have highest drought risks



Lower Wang, middle & lower Yom, lower
Ping, Nam Pak, Kwae Noi river have highest
drought risks

Example drought risk maps

Risk maps of other basins

Highest Risk


Very High Risk

High Risk

20

20


Chee River Basin, NE Thailand



Lower Northern basin

Risk maps of other basins

Example priority ranking maps

Highest Priority

Very High Priority

High Priority