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WATER YEAR : 2013
CHAO PHRAYA RIVER BASIN
Chao Phraya River at Ban Bang Luang, Chai Nat (C.13)
Lat 15 - 10 - 07 N Long 100 - 11 - 48 E
Locat on : on e t an at Wat P o Ngam a out 1.5 ometers ownstream rom C ao P raya D vers on Dam
117,187 sq.km.
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
B.M.2 - on right bank about 400 meters from the B.M.1
Elevation
Recording
Drainge Area
Amphoe
Sanphaya
Changwat
Chai Nat
Ban
Bang Luang
Gage Reading Frequency
Zero Gage at Bottom
+16.310 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Arithmetic mean of 24 readings
1947 to date
1953 - 1962, 1965 - 1968, 1972 - 1975 to date
-
1953 - 1962, 1965 - 1968, 1972 - 1975 to date
Fairly stable.
No overbank flow.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Records good. Flow regulated by Chao Phraya Dam above gage site.
Stage-discharge relation defined by 42 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
5.60
5.70
5.70
6.06
5.50
6.56
14.86
11.95
5.70
5.50
5.70
6.10
2
5.60
5.70
5.70
5.76
5.50
6.48
14.86
11.64
5.70
5.50
5.70
6.10
3
5.60
5.70
5.70
5.68
5.51
6.44
14.84
11.30
5.70
5.50
5.70
6.10
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
5.60
5.70
5.64
5.50
5.51
6.56
14.67
10.89
5.70
5.50
5.70
6.10
5
5.60
5.70
5.60
5.50
5.69
7.50
14.56
10.47
5.70
5.50
5.70
6.18
6
5.60
5.70
5.60
5.46
5.67
8.07
14.49
10.13
5.58
5.50
5.70
6.21
7
5.60
5.82
5.60
5.40
5.62
8.40
14.39
9.75
5.50
5.50
5.80
6.23
8
5.60
5.90
5.60
5.40
5.50
9.06
14.34
9.30
5.50
5.50
5.83
6.10
9
5.60
5.90
5.60
5.40
5.50
9.18
14.18
8.94
5.50
5.58
5.90
6.10
10
5.60
5.90
5.60
5.40
5.50
9.52
14.02
8.58
5.50
5.60
5.90
6.10
11
5.64
5.90
5.50
5.40
5.50
9.93
13.79
8.26
5.50
5.60
5.90
6.10
12
5 70
5 90
5 50
5 68
5 74
10 41
13 63
8 01
5 50
5 60
5 90
6 10
.
.
.
.
.
.
.
.
.
.
.
.
13
5.70
5.90
5.50
6.20
6.80
10.72
13.40
7.84
5.50
5.60
5.90
6.10
14
5.70
5.90
5.72
6.99
9.13
11.41
13.13
7.55
5.50
5.60
5.90
6.10
15
5.70
5.89
6.45
7.64
9.94
11.70
12.86
7.32
5.50
5.60
5.90
6.10
16
5.82
5.70
8.89
7.45
10.17
12.39
12.58
6.72
5.50
5.60
5.90
6.10
17
5.90
5.70
8.77
6.88
10.42
12.84
12.45
6.36
5.50
5.60
5.90
6.10
18
5.90
5.70
7.93
6.53
10.34
13.17
12.39
6.23
5.50
5.60
5.90
6.16
19
5.84
5.70
7.44
6.16
10.02
13.47
12.37
6.09
5.50
5.60
5.90
6.20
20
5.80
5.70
7.03
5.84
9.79
13.74
12.60
6.10
5.50
5.60
5.92
6.20
21
5.80
5.70
6.79
5.57
9.03
14.09
12.92
6.27
5.50
5.60
6.02
6.20
22
5.80
5.70
6.79
5.50
8.53
14.26
13.03
5.98
5.50
5.60
6.10
6.20
23
5.80
5.70
7.04
5.50
8.04
14.38
13.05
5.70
5.50
5.60
6.10
6.20
24
5.80
5.70
7.08
5.50
7.52
14.73
13.04
5.70
5.50
5.60
6.10
6.10
25
5.90
5.70
7.43
5.50
7.10
14.89
12.90
5.70
5.50
5.60
6.10
6.10
26
5.90
5.70
7.18
5.50
6.41
14.86
12.71
6.09
5.50
5.60
6.10
6.10
27
5.96
5.90
6.86
5.50
7.35
14.84
12.72
6.09
5.50
5.60
6.10
6.20
28
6.00
5.90
6.61
5.50
7.67
14.86
12.91
5.95
5.50
5.64
6.10
6.20
29
6.00
5.78
6.48
5.50
7.61
14.86
12.67
5.70
5.50
5.64
6.20
30
5.89
5.70
6.23
5.50
7.19
14.86
12.44
5.70
5.50
5.70
6.20
31
5.70
5.50
6.95
12.23
5.50
5.70
6.20
----------
--------------
Mean
5.75
5.77
6.45
5.84
7.31
11.47
13.39
7.74
5.53
5.58
5.91
6.14
Max
6.00
5.90
8.89
7.64
10.42
14.89
14.86
11.95
5.70
5.70
6.10
6.23
14.89
Min
5.60
5.70
5.50
5.40
5.50
6.44
12.23
5.70
5.50
5.50
5.70
6.10
5.40
14.99
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 0.99
m. (MSL.)
16.78
m. (MSL.) ,
16.43
m. (MSL.) ,
Drainage Area 117187 Square Kilometers
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at 09.00 Hours , on Sep 25 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation