water situation

Summary of the water volume and mitigation measures in Rayong and Chonburi Provinces for 2024 On 9th February 2024 09/02/67

1

Overview of water situation in Rayong-Chonburi area on 9th Feb 2024 P

P P

Private Pond

Chonburi

Detail

P

Reservoir capacity (MCM) (Temporary increase) Current storage volume (MCM) on 9 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)

66.93

6.13

45.31

137.45

20.94

215.24

57%

29%

63%

84%

52%

73.0%

54.88

5.13

42.31

123.95

17.94

195.24

-

-

-

Inflow into reservoir (MCM) (On 8 Feb 2024)

66.93

Bang Phra res.

P

6.13

Nong Kho res.

P

-2.41

-0.16

-1.74

Dok Krai res. P

P

-1.44

-4.32

-7.38

73.06 ล้าน ลบ.ม.

(52.8%)

203.69 ล้าน ลบ.ม.

(74%)

Ref: water situation from RID on 9 Feb 2024

215.24 Prasae res.

Khlong Yai res.

Nong Pla137.45 Lai res.

P

-4.20

-2.57

20.94

P

-

-

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

45.31

Prasae

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

09/02/67

3

Water situation of Bangphra Reservoir (by Year)

09/02/67

4

Water situation of Nongkho Reservoir (by Year)

09/02/67

5

Water situation of Nongplalai, Dokkrai and Klongyai Reservoirs

Water situation of Dokkrai Reservoir (by Year)

09/02/67

7

Water situation of Nongplalai Reservoir (by Year)

Water situation of Klongyai Reservoir (by Year)

Water situation of Prasae Reservoir

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 1.82

Actual PS-NPL

3.29 0.40

Plan Private pond

0.35

0.37

3.10

4.50

4.65

25.9

8 Feb

9.28

8 Feb

1.50

1.25

3.69

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

8 Feb

0.19

27.10

1.79

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 9 Feb 2024 Water Volume 93.46 MCM

155

Normal Status (All Clear) Prepare water reserve 130 Surveillance of water scarcity

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

•

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 9 Feb 2024 Water Volume 203.69 MCM or 74.00%

(Temporary capacity 64.03%)

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. 09/02/67

13

Target Line and Reservoir Simulation in Prasae

On 9 Feb 2024 Water Volume 215.24 MCM or 72.96%

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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