Basic HTML Version
478
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WATER YEAR : 2013
PASAK RIVER BASIN
Pasak River at Ban Tha Rua , Phra Nakhon Si Ayutthaya (S.26)
Lat 14 - 33 - 22 N Long 100 - 43 - 38 E
Locat on : on r g t an at Ban T a Rua
Changwat
Phra Nakhon Si Ayutthaya
15,425 sq.km.
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
On right bank near the automatic gage buiding
Elevation
Recording
+7.860 m. (MSL.)
Amphoe
Tha Rua
Ban
Tha Rua
Drainge Area
Bench Mark
Location BM
Type of Gage
Gage Reading Frequency
Zero Gage at Bottom
Arithmetic mean of 24 readings
1984 to date
1998 , 2009 to date
-
1998, 2009 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 effected by Pasak Cholasit Dam.
Stage-discharge relation defined by 47 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
0.75
0.85
0.37
0.43
0.55
0.94
6.56
2.77
1.05
0.45
0.44
0.50
2
0.74
0.83
0.41
0.53
0.45
1.02
6.67
2.73
0.99
0.50
0.38
0.42
3
0.79
0.60
0.45
0.59
0.51
1.07
6.93
2.48
1.06
0.47
0.37
0.46
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General Description
Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
4
0.81
0.62
0.57
0.56
0.55
0.99
7.61
2.35
1.05
0.37
0.37
0.47
5
0.68
0.59
0.64
0.51
0.59
0.97
8.32
2.24
1.03
0.33
0.40
0.47
6
0.53
0.61
0.61
0.50
0.48
1.06
8.59
2.21
1.10
0.44
0.42
0.48
7
0.52
0.76
0.53
0.60
0.44
1.42
8.40
2.13
1.14
0.44
0.36
0.53
8
0.53
0.66
0.58
0.54
0.54
1.50
8.33
2.05
1.02
0.32
0.45
0.53
9
0.67
0.73
0.55
0.56
0.68
1.56
8.26
2.06
0.92
0.39
0.41
0.53
10
0.68
0.71
0.54
0.53
0.70
1.48
8.17
1.94
0.83
0.61
0.37
0.59
11
0.70
0.70
0.50
0.56
0.87
1.43
8.06
1.78
0.84
0.61
0.28
0.61
12
0 78
0 74
0 53
0 51
0 77
1 86
7 95
1 70
0 81
0 45
0 36
0 56
.
.
.
.
.
.
.
.
.
.
.
.
13
0.78
0.69
0.52
0.45
0.72
2.16
7.85
1.57
0.76
0.42
0.51
0.53
14
0.82
0.64
0.58
0.47
0.90
2.22
7.73
1.45
1.02
0.50
0.44
0.48
15
0.77
0.65
0.57
0.53
1.11
2.34
7.67
1.40
0.85
0.50
0.57
0.52
16
0.78
0.63
0.60
0.56
1.15
2.50
7.70
1.25
0.93
0.51
0.70
0.62
17
0.78
0.58
0.74
0.54
1.21
2.50
7.53
1.36
0.85
0.43
0.56
0.58
18
0.60
0.55
0.78
0.50
1.39
2.39
6.85
1.33
0.84
0.39
0.47
0.58
19
0.63
0.47
0.92
0.55
1.41
2.67
6.04
1.32
0.66
0.51
0.40
0.61
20
0.58
0.47
0.76
0.50
1.21
4.49
6.36
1.38
0.79
0.44
0.35
0.58
21
0.51
0.55
0.66
0.57
1.12
6.91
6.00
1.22
0.82
0.26
0.54
0.56
22
0.56
0.58
0.70
0.56
1.12
6.92
5.48
1.23
0.84
0.28
0.46
0.59
23
0.56
0.52
0.72
0.62
1.07
5.87
4.98
1.20
0.54
0.35
0.44
0.64
24
0.55
0.52
0.81
0.62
1.04
4.76
4.62
1.15
0.49
0.35
0.62
0.62
25
0.61
0.54
0.84
0.62
1.04
4.54
4.02
0.99
0.38
0.28
0.62
0.64
26
0.64
0.55
0.83
0.62
1.00
4.88
3.72
0.97
0.35
0.41
0.50
0.65
27
0.66
0.57
0.81
0.55
0.88
5.03
3.24
0.96
0.19
0.41
0.52
0.58
28
0.73
0.58
0.72
0.53
0.92
5.39
2.91
0.89
0.42
0.44
0.54
0.57
29
0.88
0.51
0.65
0.53
0.91
6.02
2.83
0.87
0.49
0.42
0.60
30
0.90
0.49
0.51
0.52
0.89
6.41
2.91
1.03
0.46
0.41
0.59
31
0.48
0.52
0.94
2.94
0.40
0.43
0.63
----------
--------------
Mean
0.68
0.61
0.63
0.54
0.88
3.11
6.30
1.60
0.77
0.42
0.46
0.56
Max
0.90
0.85
0.92
0.62
1.41
6.92
8.59
2.77
1.14
0.61
0.70
0.65
8.59
Min
0.51
0.47
0.37
0.43
0.44
0.94
2.83
0.87
0.19
0.26
0.28
0.42
0.19
8.64
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed -4.18
m. (MSL.)
10.12
m. (MSL.) ,
9.19
m. (MSL.) ,
Drainage Area 15425 Square Kilometers
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at 07.00 Hours , on Oct 6 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation