Basic HTML Version
464
Location : on left bank near Wat Tha Yiam.
357
sq.km.
WATER YEAR : 2011
PASAK RIVER BASIN
Lam Sonthi at Ban Tha Yiam , Lop Buri (S.13)
Lat 15 - 20 - 23 N Long 101 - 22 - 30 E
Drainge Area
Amphoe
Lam Sonthi
Changwat
Lop Buri
Ban
Tha Yiam
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
About 15 meters from the top staff gage.
Elevation
Recording
Arithmetic means of 24 readings
1978 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+89.650 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1978 to date
-
1978 to date
Fairly stable.
No overbank flow.
Records good. Flow effected by the local weir about 200 meters downstream from the gage site.
Stage-discharge relation defined by 33 discharge measurements made in 2011.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Period of Rating
Rated by Flot
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
82.15
83.07
81.42
82.91
81.67
81.84
84.24
81.53
81.44
81.51
81.62
82.42
2
82.15
81.61
81.42
81.71
81.67
81.99
83.42
81.53
81.43
81.51
81.62
82.42
3
82.14
81.52
81.53
81.54
82.38
81.67
83.69
81.52
81.43
81.52
81.62
82.42
4
82.14
81.48
81.53
81.57
82.17
82.00
83.33
81.52
81.43
81.52
81.62
82.42
5
82.15
81.44
81.49
81.47
82.04
81.71
82.91
81.51
81.43
81.51
81.62
82.42
6
82.15
81.42
81.45
81.43
82.01
82.01
82.94
81.51
81.42
81.51
81.62
82.42
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
82.12
81.41
81.48
81.41
82.01
81.99
82.66
81.51
81.42
81.51
81.62
82.41
8
82.12
81.41
81.47
81.41
82.01
82.36
82.53
81.51
81.42
81.48
81.62
82.41
9
82.09
81.41
81.45
81.40
82.01
84.68
82.51
81.52
81.42
81.48
81.62
82.41
10
81.65
81.41
81.42
81.41
82.84
83.39
82.51
81.52
81.42
81.47
81.62
82.41
11
81.43
81.41
81.41
81.46
82.56
84.51
81.66
81.51
81.42
81.47
81.62
82.41
12
81.42
81.41
81.41
81.42
83.11
84.31
81.61
81.51
81.42
81.47
81.62
82.41
13
81.41
81.41
81.40
81.41
83.11
83.63
81.95
81.51
81.42
81.47
81.62
82.40
14
81.41
81.40
81.40
81.41
83.11
83.29
82.81
81.50
81.41
81.46
81.61
82.40
15
81.41
81.44
81.40
81.70
83.57
83.62
82.94
81.50
81.41
81.46
81.61
82.37
16
81.41
81.48
81.40
81.47
83.36
84.91
83.16
81.50
81.41
81.46
81.61
82.21
17
81.40
81.41
81.39
81.44
85.76
85.36
82.71
81.50
81.41
81.48
81.61
82.16
18
81.54
81.49
81.39
81.42
84.12
83.71
82.36
81.50
81.41
81.49
81.88
82.16
19
82.10
81.46
81.38
81.42
83.58
83.14
82.25
81.50
81.41
81.49
82.01
82.16
20
82.09
81.49
81.38
81.08
83.66
83.01
82.04
81.50
81.41
81.51
82.01
82.16
21
82.08
81.43
81.38
82.12
83.60
83.72
82.01
81.48
81.41
81.51
82.01
82.13
22
82.08
81.42
81.41
82.32
83.43
82.25
81.83
81.47
81.41
81.61
82.01
82.00
23
82.11
81.43
81.39
82.68
83.37
82.15
81.80
81.47
81.41
81.63
82.01
81.92
24
82.10
81.90
81.39
81.87
83.32
81.95
81.76
81.47
81.41
81.62
82.01
81.92
25
82.09
81.91
81.39
81.26
83.39
81.82
81.75
81.47
81.40
81.62
82.01
81.92
26
82.22
81.91
81.38
82.01
83.35
81.76
81.73
81.47
81.40
81.62
82.01
81.92
27
82.33
81.91
81.38
81.86
82.91
83.91
81.64
81.46
81.40
81.62
82.28
81.92
28
82.28
81.90
81.38
81.71
82.69
86.51
81.61
81.47
81.40
81.62
82.43
82.16
29
82.19
81.55
81.39
81.67
82.61
86.50
81.61
81.47
81.40
81.62
82.43
82.16
30
81.47
81.46
81.38
81.65
82.41
84.08
81.61
81.46
81.40
81.62
82.32
31
71.44
81.66
82.41
81.60
81.40
81.62
82.31
----------
--------------
Mean
81.91
81.25
81.42
81.65
82.91
83.26
82.36
81.50
81.41
81.53
81.81
82.25
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Max
82.33
83.07
81.53
82.91
85.76
86.51
84.24
81.53
81.44
81.63
82.43
82.42
86.51
Min
81.40
71.44
81.38
81.08
81.67
81.67
81.60
81.46
81.40
81.46
81.61
81.92
71.44
87.01
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 80.95
m. (MSL)
89.70
m. (MSL.) ,
89.68
m. (MSL.) ,
Drainage Area 357 Square Kilometers
at 18.00 Hours , on Sep 28 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation