On 18 June 2021 18/06/64
1
Overview of water situation in Rayong-Chonburi area on 18 June 2021 1 P2
Chonburi
P1
Reservoir capacity (MCM) Current storage volume (MCM) Percentage of reservoir capacity Useable storage volume Samnakbok (excluding Dead Reserve Pond Storage) (MCM) 15.53
P3 P4
Private Pond
Rayong
BangPhra
Nong Kho
Dokkrai
Nong Pla Lai
Klong Yai
Prasae
117.00
21.40
79.41
163.75
40.10
295.00
46.75
13.36
48.23
135.85
27.85
182.28
40%
62%
68%
83%
69%
62%
34.70
12.36
45.23
122.35
24.85
162.28
-
0.536
0.129
P5
Inflow into reservoir (MCM) (On 17 Jun 2021)
46.75
Bang Phra res. P6
13.36
Nong Kho res. P7
71.61
Water volume compared to previous week (-decrease, +increase) (MCM) Total water volume in each area
34.84
48.23
0.665 -1.83
-0.10
-1.47
-5.45
60.11 MCM 43.4%
211.92 MCM 76.99%
27.85
Dok Krai res.
P8
P12
P9
182.28
Prasae res.
P
P15
P10
XX
XX XX
P13
195.81
Ref: Royal Irrigation Department
+0.62 -0.58
-1.93
Khlong Yai res. 135.85 Nong Pla Lai res. P11
-4.60
Raw Water Pipe Line (EW) P14
Existing Pipe Network Constructing Pipe Network
Demand 2564 (MCM.) Supply (MCM.) Pump Station 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 Maximum 2006-2020
2004
2005
2015
2016
2017
2018
2019
2020
Capacity
Dead storage
URC - RID
LRC - RID
Average 2006-2020
2021
170 160 Maximum 2006-2020 Average 2006-2020 150 140 2 Reservoirs total capacity 138.4 MCM. 130 120 110 100 90 80 70 60 50 40 30 20 Minimum reservoir volume 13.05 MCM. 10 0 18/06/64 160
URC - RID
18 Jun 2021 60.108 MCM. 43.43 %
140
120
100
80
60
40
20
0
Jan
Feb
Mar
Apr
LRC - RID
May
Jun
Jul
Aug
Sep
Oct
Nov
3 Dec
Water situation of Bangphra Reservoir (by Year)
Water volume in Bangphra Reservoir (MCM.)
Water Situation of Bangphra Reservoir
150
140
2004
2005
2006
2011
2015
2016
2018
2019
2020
Capacity
Dead storage
URC - RID
LRC - RID
Average 2006-2020
2021
URC - RID
18 Jun 2021 46.747 MCM. 39.95 %
140
Average 2006-2020
130 120
120
Reservoir Capacity
MCM.
110 100
100
90 80
80
70 60
60
50 40
40
30 20
20
10 0
Minimum reservoir volume
.05 MCM.
LRC - RID
0
18/06/64
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
4 Dec
Water situation of Nongkho Reservoir (by Year)
Water volume in Nongkho Reservoir (MCM.)
Water Situation of Nongkho Reservoir
26
2004
2005
2011
2015
2016
2018
2019
2020
Capacity
Dead storage
Normal useable volume
URC - RID
LRC - RID
Average 2006-2020
2021
25
24
Average 2006-2020
22 20
Reservoir Capacity
URC - RID
18 Jun 2021 13.361 MCM. 62.43 %
.4 MCM.
20
18
16 15
14
12 10
10
8 6 5
4 Normal useable volume MCM. Minimum reservoir volume MCM.
2 0
0
18/06/64
Jan
Feb
Mar
LRC - RID
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
5 Dec
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
Maximum 2006-2020 2015 2019 Dead storage Average 2006-2020
2004 2016 2020 Increased Capacity 2021
2014 2018 Minimum volume LRC - RID
URC - RID
18 Jun 2021 211.924 MCM. 76.99 %
Maximum 2006-2020 Average 2006-2020
350
2005 2017 Capacity URC - RID
Increased reservoir capacity (temporary) 318.13 MCM. 300
3 reservoirs total capacity
.25 MCM.
250
200
150
100
50
Minimum reservoir volume Dead storage 0
1
31
Jan
.5 MCM. 1
Feb
MCM. LRC - RID
31
Mar
30
Apr
30
May
29
Jun
29
Jul
28
Aug
27
Sep
27
Oct
26
Nov
26
Dec
Water situation of Dokkrai Reservoir (by Year) Water Situation of Dokkrai Reservoir 2004 2014 2018 Dead storage Average 2006-2020
100
Water volume in Dokkrai Reservoir (MCM.)
100
90
90
80
80
2005 2015 2019 Increased Capacity 2021
Average 2006-2020
2006 2016 2020 URC - RID
2011 2017 Capacity LRC - RID
URC - RID
18 Jun 2021 48.234 MCM. 67.55 %
Increased reservoir capacity (temporary) 79.41 MCM.
Reservoir Capacity 71.4 MCM.
70
70
60
60
50
50
40
40
30
30
20
20
10
10
Minimum reservoir volume
0
0
18/06/64
Jan
Feb
Mar
MCM.
Apr
LRC- RID
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec 7
Water situation of Nongplalai Reservoir (by Year)
Water volume in Nongplalai Reservoir (MCM.)
Water Situation of Nongplalai Reservoir 2004 2014 2018 Dead storage Average 2006-2020
220
200
2005 2015 2019 Increased Capacity 2021
2011 2017 Capacity LRC - RID
URC - RID
18 Jun 2021 135.845 MCM. 82.96 %
Average 2006-2020
200
2006 2016 2020 URC - RID
Increased reservoir capacity (temporary) 187.62 MCM.
180
Reservoir Capacity
.75 MCM.
160 150
140 120 100
100
80
60 50
40 20
0
Minimum reservoir volume
.5 MCM. LRC - RID
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Water situation of Klongyai Reservoir (by Year)
Water volume in Klongyai Reservoir (MCM.)
Water Situation of Klongyai Reservoir 2006 2016 2020 Lowest of tunnel 2021
55
50
Increased reservoir capacity (temporary) Reservoir Capacity
2014 2018 Dead storage LRC - RID
2015 2019 Increased Capacity Average 2006-2020
URC - RID
18 Jun 2021 27.845 MCM. 69.44 %
Average 2006-2020
50
45 40
2011 2017 Capacity URC - RID
.465 MCM.
.1 MCM.
40
35 30
30
25 20
20
Lowest water level that can be transferred through tunnel to Nongplalai Reservoir
15 10
.2 MCM.
Minimum reservoir volume .5 MCM.
10
5
0
LRC - RID 0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Water situation of Prasae Reservoir
Water volume in Prasae Reservoir (MCM.)
Water Situation of Prasae Reservoir
360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0
350
Maximum 2006-2020
2005
2006
2015
2016
2017
2019
2020
Capacity
Dead storage
URC - RID
LRC - RID
Average 2006-2020
2021
Maximum 2006-2020 Average 2006-2020
300
Reservoir Capacity
URC - RID
18 Jun 2021 182.28 MCM. 61.79 %
MCM.
250
200
150
100
50
Minimum reservoir volume
MCM. LRC - RID
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Summary of water shortage prevention and mitigation measures in Rayong and Chonburi Provinces 2021 Planned Water Volume (MCM) 2021
Measure JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
8.0
8.0
8.0
8.0
8.0
4.00
4.00
SEP
OCT
NOV
DEC
Total
1. Primary measures
1.1Water diversion via pumping from Prasae Reservoir Stop divert from Prasae-Nong Pla Lai because of the water volume in Nong Pla Lai reservoir reach over URC
Planned PS - KY Planned PS- NPL Actual PS-KY Actual PS-NPL
1.2 Divert Water from Bangpakong River + Private Pond
Planned Private Pond
-
3.00
4.00
4.00
4.00
-
-
-
-
-
0.00
-
21.74
1.68
1.86
5.75
Planned
Actual Bangpakong
1.3 Divert Water from Klong Pra Ong Chaiyanuchit
Planned Actual
4.00
0.35
6.80
Bangpakong
Actual Private Pond
30.00
3.00
0.45 3.05 6.20 6.29 5.75 1.86
40.00
7 Jun
1.53 1.24 1.14 1.40 1.54 0.40
7.80
7.40
22.00
7.25
Target Line and Reservoir Simulation in Chonburi
On 18 June 2021 Water Volume 99.40 MCM
Storage Volume 138.40 MCM
Normal Status (All Clear)
155
155
130 Prepare water reserve • •
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)
Surveillance of water scarcity •
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
Target Line and Reservoir Simulation in Rayong
On 18 Jun 2021 Water Volume 211.92 MCM or 76.99%
Storage Volume 138.40 MCM
Normal Status (All Clear) 230
220 170
• •
Surveillance of water scarcity •
Water shortage warning
• •
220
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. 18/06/64
13
Target Line and Reservoir Simulation in Prasae
On 18 June 2021 Water Volume 182.28 MCM or 61.79%
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
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
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