20241206-Water Situation and mitigation for drought

Summary of the water volume and mitigation measures in Rayong and Chonburi Provinces for 2024 On 6th December 2024 09/12/67

1

Overview of water situation in Rayong-Chonburi area on 6th Dec 2024 P

P P

Private Pond

P

Chonburi

Detail

Reservoir capacity (MCM) (Temporary increase) Current storage volume (MCM) on 29th Nov 2024 Percentage of reservoir capacity Samnakbok Useable storage volume Reserve Pond (excluding Dead Storage) (MCM) P

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)

107.50

14.69

79.65

164.47

32.79

92%

69%

111.55%

100.44%

81.78% 90.63%

95.45

13.69

76.65

150.97

29.79

0.060

-

0.351

Inflow into reservoir (MCM) (On 28th Nov 2024)

107.50

Bang Phra res.

P

14.69

Nong Kho res.

P

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

Rayong

(100.30%)

+0.01

-0.12

+0.24

79.65

Dok Krai res. P

P

(64.18%)

-1.43

247.36 0.00

-1.15 -5.70

-0.11

-2.34

122.19 MCM (88.30%)

276.91 MCM (100.60%)

Ref: water situation from RID on 29st Nov 2024

267.36 Prasae res.

Khlong Yai res.

Nong Pla164.47 Lai res.

P

267.36

0.410

32.79

P

(87.66%)

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

09/12/67

3

Water situation of Bangphra Reservoir (by Year)

09/12/67

4

Water situation of Nongkho Reservoir (by Year)

09/12/67

5

Water situation of Nongplalai, Dokkrai and Klongyai Reservoirs

Water situation of Dokkrai Reservoir (by Year)

09/12/67

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

OCT

NOV

DEC

Total

Plan MOU PS - KY

2.19

4.00

8.50

8.50

8.50

5.00

5.00

5.00

5.00

5.00

5.00

5.00

66.69

Plan PS- NPL

3.30

2.22

3.50

4.11

3.28

0.78

0.83

0.40

0.39

1.36

6.09

6.14

32.41

7.46

6.23

7.72 7.02 6.07 5.70 5.99 5.73 6.05 7.01

5.32

5 Dec 71.66 1.36

4.40

5 Dec 0.97 33.93

1. Primary measures

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

PS-KY (Diver for irrigation) Actual PS-NPL

1.2 Divert Water from Bangpakong River + Private Pond

Plan Private pond

(4.87)

(2.45)

3.29 2.22 3.50 4.11 3.28 3.25 2.73 2.48 0.68 3.02 1.50

1.25

1.25

1.25

1.25

1.25

Plan Bangpakong River Actual PrivatePond

1.4 Divert Water from Klong Pantong - Klong Pra Ong Chaiyanuchit

8.97

9.30

9.12

34.51

7.14 7.21

Plan Actual

7.05

0.40 1.31 0.71 0.72 1.48 0.92

Actual Bangpakong River

1.3 Klong Saphan reverse pumping station

10.58

1.25 0.08

1.60

(7.32)

2.05

8.35

8.38

14 Nov 3.53

27.55

4.00 4.00 2.00 2.00

12.00

0.06

4.92

1.93

0.00

0.88

Plan

4.00 14.00 14.00 14.00 14.00 10.00

Actual

8.60 13.95 15.05 14.43 15.19 13.08

70.00

30 Nov

-

80.3

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

OCT

NOV

DEC

Total

Plan

0.00

0.00

1.00

2.00

2.00

0.00

0.00

5.00

Actual

0.00 0.00 1.08 2.23 2.93

2. Secondary measures 2.1 La Harn Lai Sta.

2.2 Wang Ta Nod

31 Oct

6.24

Plan Actual

09/12/67

12

Target Line and Reservoir Simulation in Chonburi

6th Dec 2024 Water Volume 144.04 MCM

Normal Status (All Clear) 155

Prepare water reserve 130 Surveillance of water scarcity

155 Normal Status (All Clear) Prepare water reserve 130

•

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)

•

•

Water shortage warning Minimum storage volume15.05 MCM.

• •

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 6th Dec 2024 Water Volume 273.374 MCM or 99.32%

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. 09/12/67

14

Target Line and Reservoir Simulation in Prasae

On 6th Dec 2024 Water Volume 261.20 MCM or 88.54%

Storage Volume 295.0 MCM

250

Normal Status (All Clear) Prepare water reserve

Prepare water reserve • •

Surveillance of water scarcity

250

Normal Status (All Clear)

•

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 Minimum storage volume 20.0 MCM.

250

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