Basic HTML Version
22
Location : on left bank at Ban Kok So.
156
sq.km.
WATER YEAR : 2012
KHONG RIVER BASIN
Nam Thop at Ban Kok So , Loei (Kh.77A)
Lat 17 - 15 - 46 N Long 101 - 39 - 28 E
Amphoe
Wang Saphung
Changwat
Loei
Ban
Kok So
Drainge Area
Staff gage
+260.980 m. (MSL.)
B.M.- Highways Dept.
On right bank at the abutment of the bridge.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
Arithmetic mean of 3 readings
1983 to date
+268.630 m. (MSL.)
Bench Mark
Type of Gage
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
1984 to date
-
1984 to date
Fairly stable.
No overbank flow.
Records fair. The cataract situated downstream from the gage site.
Stage-discharge relation defined by 19 discharge measurements made in 2012.
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
261.25
261.27
261.72
261.50
261.69
261.90
261.82
261.50
261.40
261.41
261.39
261.36
2
261.25
261.28
261.86
261.38
261.66
261.80
261.75
261.49
261.42
261.41
261.38
261.35
3
261.25
261.32
262.07
261.33
261.64
262.15
261.71
261.48
261.44
261.42
261.38
261.34
4
261.25
261.33
261.84
261.33
261.63
262.38
261.71
261.47
261.44
261.42
261.38
261.34
5
261.25
261.36
261.78
261.34
261.62
261.88
261.70
261.47
261.44
261.41
261.37
261.33
6
261.25
261.40
261.73
261.40
261.60
261.91
262.42
261.46
261.43
261.40
261.37
261.32
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
261.25
261.45
261.81
261.66
261.59
262.82
262.05
261.46
261.44
261.40
261.37
261.32
8
261.25
261.52
262.14
261.86
261.93
262.69
262.04
261.45
261.45
261.40
261.36
261.32
9
261.25
261.63
261.74
261.78
262.80
263.27
261.93
261.45
261.46
261.40
261.36
261.31
10
261.25
261.53
261.65
261.68
262.54
262.37
261.86
261.45
261.45
261.42
261.37
261.31
11
261.25
261.49
261.63
261.67
262.00
262.24
261.80
261.45
261.45
261.42
261.37
261.30
12
261.25
261.47
261.61
262.10
261.85
262.04
261.78
261.46
261.45
261.41
261.37
261.30
13
261.25
261.46
261.59
262.40
261.79
261.97
261.74
261.47
261.44
261.40
261.39
261.30
14
261.25
261.44
261.60
261.88
261.72
262.03
261.66
261.46
261.43
261.40
261.40
261.29
15
261.25
261.42
261.58
261.89
261.69
262.06
261.66
261.46
261.43
261.40
261.40
261.29
16
261.25
261.38
261.55
261.79
261.67
261.91
261.66
261.45
261.42
261.39
261.39
261.29
17
261.25
261.36
261.54
261.71
261.65
261.84
261.64
261.45
261.41
261.39
261.39
261.28
18
261.25
261.32
261.55
261.67
261.62
261.80
261.62
261.44
261.41
261.39
261.39
261.28
19
261.24
261.29
261.60
261.67
261.60
261.76
261.61
261.44
261.41
261.40
261.39
261.28
20
261.24
261.30
261.57
261.67
261.58
262.21
261.60
261.43
261.40
261.40
261.39
261.28
21
261.23
261.32
261.55
261.63
261.57
261.99
261.58
261.43
261.40
261.41
261.38
261.28
22
261.23
261.33
261.54
261.61
261.57
261.89
261.57
261.42
261.40
261.41
261.38
261.27
23
261.23
261.33
261.54
261.60
261.57
261.83
261.56
261.41
261.39
261.40
261.38
261.27
24
261.24
261.32
261.53
261.63
261.74
261.85
261.55
261.42
261.39
261.40
261.38
261.27
25
261.25
261.32
261.64
261.85
261.72
261.83
261.54
261.41
261.38
261.40
261.37
261.26
26
261.25
261.34
261.90
261.96
261.66
261.99
261.53
261.40
261.39
261.39
261.37
261.26
27
261.26
261.38
261.63
261.78
261.76
261.93
261.53
261.39
261.40
261.41
261.36
261.26
28
261.29
261.63
261.63
261.75
261.83
261.89
261.52
261.39
261.42
261.41
261.36
261.25
29
261.28
262.05
261.62
261.76
261.89
261.79
261.51
261.40
261.44
261.40
261.25
30
261.28
261.79
261.62
261.73
261.75
261.85
261.51
261.39
261.43
261.39
261.25
31
261.69
261.74
261.99
261.50
261.42
261.39
261.25
----------
--------------
Mean
261.25
261.44
261.68
261.70
261.77
262.06
261.70
261.44
261.42
261.40
261.38
261.29
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Max
261.29
262.05
262.14
262.40
262.80
263.27
262.42
261.50
261.46
261.42
261.40
261.36
263.27
Min
261.23
261.27
261.53
261.33
261.57
261.76
261.50
261.39
261.38
261.39
261.36
261.25
261.23
264.21
m. (MSL.) ,
260.98
m. (MSL.) ,
River Bed 260.93
m. (MSL)
268.63
m. (MSL.) ,
268.57
m. (MSL.) ,
Drainage Area 156 Square Kilometers
at 10.00 Hours , on Sep 9 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation