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WATER YEAR : 2013
CHAO PHRAYA RIVER BASIN
Chao Phraya River at Khai Chira Prawat, Nakhon Sawan (C.2)
Lat 15 - 40 - 15 N Long 100 - 06 - 49 E
Locat on : on e t an at Ban P a Lom
109,973 sq.km.
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
About 20.00 meters west of the gage site
Elevation
Recording
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
+25.628 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Mueang
Changwat
Nakhon Sawan
Ban
Phai Lom
Arithmetic mean of 24 readings
1914 to date
1956 to date
-
1956 to date
Fairly stable
No overbank flow.
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Records good. Flow effected by Phumiphol Dam, Sirikit Dam and Phrom Phiram Dam.
Stage-discharge relation defined by 51 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
17.88
18.15
18.87
18.72
18.94
19.32
23.05
22.30
18.16
18.28
18.44
18.43
2
17.87
18.11
18.82
18.51
19.13
19.23
23.12
22.11
18.11
18.33
18.44
18.38
3
17.82
18.11
18.73
18.37
19.23
19.30
23.15
21.91
18.01
18.35
18.42
18.38
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
17.85
18.09
18.65
18.28
19.32
19.54
23.10
21.73
17.92
18.34
18.43
18.41
5
17.95
18.26
18.59
18.11
19.33
19.74
23.15
21.55
17.90
18.38
18.40
18.38
6
17.98
18.50
18.65
18.08
19.21
19.81
23.12
21.35
17.92
18.40
18.44
18.33
7
17.97
18.62
18.77
18.13
19.02
19.80
23.09
21.13
18.04
18.40
18.38
18.36
8
17.97
18.79
18.90
18.19
18.85
19.75
23.13
20.88
18.26
18.34
18.39
18.30
9
17.97
19.06
18.93
18.26
18.83
19.68
23.13
20.63
18.70
18.33
18.39
18.15
10
17.95
19.21
18.94
18.51
18.91
19.92
23.10
20.39
18.86
18.32
18.41
18.05
11
17.91
19.22
18.81
18.85
19.14
20.09
23.05
20.19
18.84
18.26
18.39
17.94
12
17 91
19 19
18 82
19 15
19 52
20 20
22 93
20 04
18 80
18 25
18 33
17 88
.
.
.
.
.
.
.
.
.
.
.
.
13
17.94
19.15
18.99
19.38
20.01
20.36
22.80
19.90
18.60
18.23
18.34
17.96
14
17.96
19.09
19.27
19.64
20.62
20.71
22.68
19.71
18.41
18.17
18.36
17.95
15
18.01
19.03
19.74
19.67
20.99
21.10
22.57
19.54
18.34
18.12
18.42
17.94
16
18.02
18.92
19.96
19.53
21.18
21.49
22.40
19.39
18.32
18.05
18.40
18.01
17
18.09
18.78
19.80
19.36
21.29
21.92
22.25
19.25
18.23
18.03
18.35
18.09
18
18.22
18.78
19.55
19.07
21.20
21.98
22.10
19.15
18.15
18.06
18.38
18.13
19
18.25
18.80
19.29
18.79
21.07
22.06
22.02
19.19
18.26
18.09
18.36
18.14
20
18.19
18.83
19.14
18.62
20.93
22.16
22.00
19.16
18.34
18.07
18.38
18.09
21
18.23
18.87
19.10
18.53
20.71
22.22
21.99
19.06
18.26
18.06
18.37
18.13
22
18.27
18.94
19.20
18.46
20.36
22.43
22.07
18.88
18.19
18.21
18.39
18.14
23
18.34
18.95
19.28
18.37
19.98
22.67
22.30
18.69
18.26
18.33
18.39
18.10
24
18.29
19.00
19.37
18.32
19.74
22.92
22.42
18.58
18.36
18.32
18.43
18.02
25
18.33
19.04
19.39
18.26
19.66
22.93
22.43
18.46
18.43
18.36
18.29
17.99
26
18.41
18.95
19.34
18.36
19.77
22.80
22.46
18.39
18.45
18.37
18.28
17.99
27
18.43
18.95
19.27
18.60
19.93
22.72
22.87
18.29
18.43
18.38
18.34
18.07
28
18.40
19.01
19.16
18.68
19.92
22.76
23.01
18.25
18.42
18.46
18.41
18.08
29
18.34
18.97
19.03
18.69
19.81
22.79
22.85
18.22
18.36
18.43
18.05
30
18.22
18.94
18.89
18.76
19.62
22.92
22.67
18.17
18.34
18.45
18.04
31
18.89
18.80
19.47
22.51
18.30
18.43
18.04
----------
--------------
Mean
18.10
18.81
19.11
18.68
19.86
21.18
22.69
19.82
18.32
18.28
18.38
18.13
Max
18.43
19.22
19.96
19.67
21.29
22.93
23.15
22.30
18.86
18.46
18.44
18.43
23.15
Min
17.82
18.09
18.59
18.08
18.83
19.23
21.99
18.17
17.90
18.03
18.28
17.88
17.82
23.18
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 13.43
m. (MSL.)
25.60
m. (MSL.) ,
26.46
m. (MSL.) ,
Drainage Area 109973 Square Kilometers
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at 03.00 Hours , on Oct 3 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation