water situation

Summary of the water volume and mitigation measures in Rayong and Chonburi Provinces for 2024 On 16th February 2024 16/02/67

1

Overview of water situation in Rayong-Chonburi area on 16th Feb 2024 P

P P

Private Pond

Chonburi

Detail

P

Reservoir capacity (MCM) (Temporary increase) Current storage volume (MCM) on 16 Feb 2024 Percentage of reservoir capacity Samnakbok Useable storage volume Reserve Pond (excluding Dead Storage) (MCM) P

Rayong

BangPhra

Nong Kho

Dokkrai

Nong Pla Lai

Klong Yai

117.00

21.40

71.40 (79.41)

163.75 (187.62)

40.10 295.00 (51.10)

64.28

5.87

42.97

133.05

19.70

210.64

55%

27%

60%

81%

49%

71.4%

52.23

4.87

39.97

119.55

16.70

190.64

-2.65

-0.25

-2.34

-4.40

-1.24

Prasae

Inflow into reservoir (MCM) (On 15 Feb 2024)

64.28

Bang Phra res.

P

5.87

Nong Kho res.

P

Water volume compared to previous week (-decrease, +increase) (MCM) Total water volume in each area

19.70

-7.98

70.15 MCM (50.7%)

195.71 MCM (71.1%)

Ref: water situation from RID on 16 Feb 2024

210.64 Prasae res.

Khlong Yai res.

Nong Pla133.05 Lai res.

42.97

Dok Krai res. P

P

P

P

-4.60

-2.90

P

P

P

Normal 50.01-80.00% Emergency 30.01-50.00%

Critical <30.00% XX

Emergency Pond

P

Supply (MCM.) Pump Station Reservoir

P

Raw Water Pipe Line (EW) P

Existing Pipe Network Constructing Pipe Network

Raw Water Pipe Line (RID) Existing Pipe Network Constructing Pipe Network

Water situation of Bangphra, Nongkho Reservoir Water volume in Bangphra and Nongkho Reservoirs (MCM.)

Water Situation of Bangphra and Nongkho Reservoirs

170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0

Dead storage

Capacity

LRC - RID

URC - RID

Average 2006-2023

2005

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

140

URC - RID

16 Feb 2024 70.15 MCM. 50.69 %

160

2 Reservoirs total capacity 138.4 MCM. Average 2006-2023

120

2022

100

2017 80

2024

2018 2023

60

015

2021 2019

40

005

020 016

20

0

LRC - RID

Minimum reservoir volume 13.05 MCM.

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Water situation of Bangphra Reservoir (by Year)

Water volume in Bangphra Reservoir (MCM.)

Water Situation of Bangphra Reservoir

150 140

Dead storage

Capacity

LRC - RID

URC - RID

Average 2006-2023

2005

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

URC - RID

16 Feb 2024 64.28 MCM. 54.94 %

140

130 120

120

Reservoir Capacity

Average 2006-2023

MCM.

110 100

100

90 80

2024

2022

80

2017

70 60

60

2023

50 40

015

2021 2019

40

020

20

10 0

005

016

30 20

2018

Minimum reservoir volume

.05 MCM.

ม.ค.

เม.ย.

LRC - RID

0

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Water situation of Nongkho Reservoir (by Year)

Water volume in Nongkho Reservoir (MCM.)

Water Situation of Nongkho Reservoir Dead storage Average 2006-2023 2016 2020 2567

26

Capacity Normal useable volume 2017 2021

24

20

URC - RID 2015 2019 2023

URC - RID

16 Feb 2024 5.87 MCM. 27.44 %

25

22

LRC - RID 2005 2018 2022

Reservoir Capacity

.4 MCM. Average 2006-2023

20

2022

18

2021

16

2017 15

2023

14 12

10

2018 10

2024

8

020 2019

6

016

5

4 2 0

015

Normal useable volume MCM. Minimum reservoir volume MCM.

LRC - RID

005 0

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Water situation of Nongplalai, Dokkrai and Klongyai Reservoirs

Water volume in Dokkrai Nongplalai and Klongyai Reservoirs (MCM.)

Water Situation of Dokkrai Nongplalai and Klongyai Reservoirs

380 360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0

Dead storage Average 2006-2023 2015 2019 2023

Capacity Minimum volume 2016 2020 2024

LRC - RID Increased Capacity 2017 2021

URC - RID 2005 2018 2022

URC - RID

16 Feb 2024 195.71 MCM. 71.1 %

350

Increased reservoir capacity (temporary)

.13 MCM. Average 2006-2023

300

3 reservoirs total capacity

.25 MCM. 2022

2017

250

2021

2024 200

2018 150

2023

2019

016 100

015

020 50

Minimum reservoir volume

Dead storage 0

1

.5 MCM.

31

ม.ค.

LRC - RID

005

MCM.

1

ก.พ.

31

มี.ค.

30

เม.ย.

30

พ.ค.

29

มิ.ย.

29

ก.ค.

28

ส.ค.

27

ก.ย.

27

ต.ค.

26

พ.ย.

26

ธ.ค.

Water situation of Dokkrai Reservoir (by Year) Water Situation of Dokkrai Reservoir Dead storage Increased Capacity 2016 2020 2024

100

Water volume in Dokkrai Reservoir (MCM.)

100

90 80

Capacity Average 2006-2023 2017 2021

LRC - RID 2005 2018 2022

URC - RID 2015 2019 2023

URC - RID

16 Feb 2024 42.97 MCM. 60.18 %

90

Increased reservoir capacity (temporary)

.41 MCM.

2021

Average 2006-2023

80

Reservoir Capacity

70

70

60

60

50

50

40

40

30

30

20

20

.4 MCM. 2022

2017 2018

2024

2023 2019

015

016 020

10

005

10

Minimum reservoir volume

0

0

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LRC - RID

MCM.

เม.ย.

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Water situation of Nongplalai Reservoir (by Year) Water Situation of Nongplalai Reservoir Dead storage Average 2006-2023 2016 2020 2024

Water volume in Nongplalai Reservoir (MCM.)

220

Capacity Increased Capacity 2017 2021

LRC - RID 2005 2018 2022

URC - RID 2015 2019 2023

16 Feb 2024 133.05 MCM. 81.25 %

200

200

Increased reservoir capacity (temporary)

URC - RID

.62 MCM.

180

2021

Average 2006-2023

Reservoir Capacity

160

.75 MCM.

2024 2018

150

2017 2022

140 120 100

100

2023

80

2019

015

60 020

50

40 20 0

Minimum reservoir volume

0

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016 005

.5 MCM.

เม.ย.

พ.ค.

มิ.ย.

ก.ค.

ส.ค.

ก.ย.

LRC - RID

ต.ค.

พ.ย.

ธ.ค.

Water situation of Klongyai Reservoir (by Year) Water Situation of Klongyai Reservoir

Water volume in Klongyai Reservoir (MCM.)

Dead storage Average 2006-2023 2016 2020 2024

Capacity Increased Capacity 2017 2021

60 55

LRC - RID Lowest of tunnel 2018 2022

16 Feb 2024 19.7 MCM. 49.13 %

URC - RID 2015 2019 2023

URC - RID 2022

50

Increased reservoir capacity (temporary)

2021

.1 MCM.

50

Average 2006-2023

45 40

Reservoir Capacity

40

.1 MCM.

2017

35 30

30

25 20

2024 2018 20

Lowest water level that can be transferred through tunnel to Nongplalai Reservoir

15 10

2019

016

Minimum reservoir volume .5 MCM.

.2 MCM.

2023

10

015

020

5

LRC - RID

0

0

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Water situation of Prasae Reservoir Water Situation of Prasae Reservoir Dead storage Average 2006-2023 2017 2021

360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0

Capacity 2005 2018 2022

Water volume in Prasae Reservoir (MCM.)

350

300

LRC - RID 2015 2019 2023

URC - RID 2016 2020 2024

16 Feb 2024 210.64 MCM. 71.4 % Reservoir Capacity

URC - RID

Average 2006-2023

MCM.

250

2024

2022

2018

2023

200

2021 015

150

016

2019

100

2017

020

50

005

Minimum reservoir volume

LRC - RID

MCM.

0

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Summary of water shortage prevention and mitigation measures in Rayong and Chonburi Provinces 2024 Planned Water Volume (MCM) 2024

Measure JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

4.25

8.50

8.50

8.50

8.50

4.25

0.36

0.37

3.60

2.48

2.48

3.00

OCT

NOV

DEC

Total

1. Primary measures

1.1Water diversion via pumping from Prasae Reservoir PS. Divert water to irrigation area during Jan to Mar 2024

1.2 Divert Water from Bangpakong River + Private Pond

Plan MOU PS - KY Plan PS- NPL

0.59

PS-KY (Diver for irrigation)

7.46 2.60

Actual PS-NPL

3.29 0.56

Plan Private pond

0.35

0.37

3.10

4.50

4.65

25.9

15 Feb

10.06

15 Feb

1.50

1.25

3.85

1.25

1.25

1.25

1.25

10.58

1.25

Plan Bangpakong River Actual PrivatePond

42.5

7.22 1.60

6.29

6.77

6.78

15 Feb

0.29

27.10

1.89

Actual Bangpakong River

1.3 Klong Saphan reverse pumping station

1.4 Divert Water from Klong Pra Ong Chaiyanuchit

Plan

10.00

5.00 5.00

Actual Plan Actual

14.00 14.00 14.00 14.00

56.00

Target Line and Reservoir Simulation in Chonburi

On 16 Feb 2024 Water Volume 89.82 MCM

155

Normal Status (All Clear) Prepare water reserve 130

155 Normal Status (All Clear) Prepare water reserve 130 •

Surveillance of water scarcity

•

•

Water shortage warning Minimum storage volume15.05 MCM.

• •

Divert water from Bang Pa Kong River and Pra Ong Chaiyanuchit (diversion will according to the water situation) Increase water diversion from Rayong (diversion will according to the water situation)

Divert Water from Khlong Luang Ratchalothorn reservoir (diversion will according to the water situation) Consideration for another private pond Reduce water usage for various activities

155

Target Line and Reservoir Simulation in Rayong

Increase reservoir capacity for temporary 318.13 MCM.

On 16 Feb 2024 Water Volume 176.55 MCM or 71.10%

(Temporary capacity 61.52%)

Normal Status (All Clear)

Normal Status (All Clear)

230 Prepare water reserve

220 170

• •

Surveillance of water scarcity •

Water shortage warning

• •

220 170

Divert water from Prasae reservoir via Prasae-Klong Yai pipeline and PrasaeNong Pla Lai pipeline (diversion will according to the water situation) Divert water from Wat La Harn Rai to Nong Pla Lai reservoir (diversion will according to the water situation) Divert water from Prasae reservoir via Prasae-Klong Yai pipeline and Prasae-Nong Pla Lai pipeline (Full efficiency) Divert water from Wat La Harn Rai to Nong Pla Lai reservoir (Full efficiency) Reduce water consumption for all activities

Minimum storage volume 31.70 MCM. 16/02/67

13

Target Line and Reservoir Simulation in Prasae

On 16 Feb 2024 Water Volume 190.64 MCM or 71.40%

Storage Volume 295.0 MCM

250

Normal Status (All Clear) Prepare water reserve

• •

Surveillance of water scarcity

Water shortage warning Minimum storage volume 20.0 MCM.

•

250

Normal Status (All Clear) Prepare water reserve

Divert water from Khlong Saphan canal to Prasae reservoir (diversion will according to the water situation) Divert water from Wang Ta Nod canal to Prasae reservoir (diversion will according to the water situation) decrease divert water from Prasae reservoir (diversion will according to the water situation)

• Reduce water consumption for all activities

250

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