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WATER YEAR : 2013
CHAO PHRAYA RIVER BASIN
Chao Phraya River at Ban Tha Nam Ooy, Nakhon Sawan (C.56)
Lat 15 - 25 - 13 N Long 100 - 08 - 08 E
Locat on : on e t an at Ban T a Nam Ooy
Flood Plain
Water - stage recorder.
+15.000 m. (M.S.L.)
B.M.-H.D.
On left bank at the bridge
Elevation
Recording
Amphoe
Phayuha Khiti
Changwat
Nakhon Sawan
Ban
Tha Nam Ooy
Gage Reading Frequency
Zero Gage at Bottom
+21.898 m. (M.S.L.)
Type of Gage
Bench Mark
Location BM
Drainge Area
Arithmetic means of 24 readings
2008 to date
2008 to date
-
2008 to date
Fairly stable because of backwater effect.
No overbank flow
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Records good. Stage-discharge relation defined by 23 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
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1
14.19
14.54
14.95
16.10
15.24
16.68
18.79
18.16
14.27
15.27
15.16
14.47
2
14.19
14.41
14.91
15.78
15.40
16.64
18.85
18.01
14.25
15.24
15.18
14.53
3
14.19
14.31
14.83
15.47
15.58
16.61
18.88
17.88
14.18
15.20
15.22
14.57
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
14.17
14.22
14.73
15.24
15.74
16.69
18.88
17.77
14.10
15.21
15.23
14.70
5
14.25
14.25
14.64
15.01
15.83
16.73
18.91
17.68
14.06
15.22
15.21
14.87
6
14.31
14.43
14.60
14.78
15.82
16.72
18.92
17.57
14.02
15.27
15.19
14.93
7
14.35
14.66
14.59
14.69
15.72
16.66
18.90
17.47
14.03
15.31
15.17
14.81
8
14.33
14.87
14.76
14.68
15.57
16.60
18.92
17.35
14.12
15.29
15.15
14.92
9
14.32
15.13
14.95
14.72
15.50
16.46
18.90
17.25
14.37
15.25
15.10
14.95
10
14.31
15.34
15.11
14.85
15.51
16.48
18.86
17.16
14.85
15.22
15.06
14.88
11
14.27
15.50
15.22
15.25
15.62
16.53
18.81
17.07
15.40
15.19
15.02
14.72
12
14 22
15 57
15 33
15 77
15 96
16 60
18 74
17 00
15 81
15 11
15 02
14 52
.
.
.
.
.
.
.
.
.
.
.
.
13
14.17
15.59
15.50
16.24
16.49
16.66
18.62
16.97
15.97
15.04
14.96
14.38
14
14.16
15.55
15.91
16.59
16.40
16.83
18.52
16.90
15.89
15.01
14.87
14.28
15
14.17
15.44
16.46
16.63
16.57
17.18
18.39
16.77
15.74
14.95
14.83
14.20
16
14.21
15.26
16.59
16.63
16.77
17.44
18.27
16.71
15.59
14.86
14.82
14.16
17
14.23
14.95
16.55
16.61
16.86
17.72
18.19
16.71
15.47
14.73
14.85
14.21
18
14.32
14.75
16.63
16.51
16.85
17.83
18.08
16.62
15.30
14.65
14.83
14.28
19
14.44
14.66
16.63
16.23
16.80
17.86
18.02
16.51
15.12
14.63
14.79
14.34
20
14.49
14.64
16.60
15.89
16.75
18.02
18.07
16.51
15.09
14.62
14.80
14.38
21
14.50
14.69
16.59
15.56
16.79
18.13
18.10
16.43
15.04
14.59
14.77
14.43
22
14.56
14.80
16.60
15.38
16.72
18.31
18.13
16.29
14.96
14.56
14.70
14.46
23
14.61
14.88
16.61
15.23
16.64
18.53
18.25
16.08
14.83
14.59
14.65
14.49
24
14.65
14.93
16.63
15.07
16.56
18.68
18.31
15.79
14.81
14.65
14.61
14.48
25
14.63
15.01
16.61
14.92
16.54
18.72
18.30
15.47
14.90
14.77
14.59
14.43
26
14.71
15.01
16.61
14.79
16.74
18.66
18.28
15.13
15.13
14.91
14.51
14.38
27
14.79
14.95
16.59
14.78
16.79
18.58
18.48
14.63
15.16
15.02
14.45
14.36
28
14.80
14.96
16.57
14.92
16.79
18.59
18.65
14.37
15.21
15.03
14.42
14.37
29
14.76
14.96
16.50
15.03
16.77
18.61
18.56
14.24
15.25
15.06
14.41
30
14.67
14.97
16.34
15.06
16.74
18.69
18.43
14.19
15.31
15.09
14.39
31
14.97
15.08
16.71
18.29
15.32
15.14
14.38
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Mean
14.40
14.91
15.84
15.47
16.28
17.48
18.53
16.56
14.95
14.99
14.90
14.51
Max
14.80
15.59
16.63
16.63
16.86
18.72
18.92
18.16
15.97
15.31
15.23
14.95
18.92
Min
14.16
14.22
14.59
14.68
15.24
16.46
18.02
14.19
14.02
14.56
14.42
14.16
14.02
18.93
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 10.23
m. (MSL.)
21.98
m. (MSL.) ,
21.62
m. (MSL.) ,
Drainage Area
Square Kilometers
at 17.00 Hours , on Oct 5 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation
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