Page 72 - yearbook2011

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38
Location : on right bank at the bridge on highway.
948
sq.km.
Drainge Area
WATER YEAR : 2011
KHONG RIVER BASIN
Huai Puan at Ban Pa Noi , Loei (Kh.105)
Lat 17 - 21 - 43 N Long 101 - 49 - 46 E
Amphoe
Wang Saphung
Changwat
Loei
Ban
Pa Noi
Staff gage
+247.500 m. (MSL.)
B.M.- Highways Dept.
On right bank at the footpath of the bridge.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
Arithmetic means of 3 readings.
2006 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+258.341 m. (MSL.)
Bench Mark
Type of Gage
2006 to date
-
2006 to date
Fairly stable.
Overbank flow starts at elevation +255.700 m.(MSL.), records are channel flow only.
Records good. Stage-discharge relation defined by 19 discharge measurements made in 2011.
Period of Rating
Rated by Flot
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
249.63
250.46
251.42
251.00
253.31
251.83
252.20
251.40
251.14
251.09
251.04
250.62
2
249.63
250.63
251.31
251.26
253.55
251.69
252.26
251.40
251.14
251.07
251.00
250.61
3
249.64
250.77
251.18
251.17
252.90
251.48
253.06
251.39
251.14
251.04
250.96
250.60
4
249.64
250.91
250.74
251.36
252.61
251.81
253.41
251.39
251.14
251.00
250.93
250.60
5
249.65
251.10
251.32
251.46
251.71
251.88
253.13
251.38
251.14
250.97
250.93
250.60
6
249.67
251.28
251.39
251.29
251.58
252.63
252.79
251.38
251.14
250.94
250.90
250.59
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
249.69
251.37
251.91
251.41
251.15
254.41
251.65
251.37
251.14
250.91
250.81
250.58
8
249.71
251.33
251.61
251.38
251.13
253.24
251.74
251.36
251.14
250.88
250.75
250.58
9
249.72
251.31
251.32
251.35
251.27
252.06
251.60
251.36
251.14
250.87
250.71
250.59
10
249.69
251.35
251.21
251.95
251.05
251.88
251.44
251.35
251.14
250.86
250.71
250.61
11
249.69
251.36
251.17
251.75
251.02
251.87
251.35
251.35
251.14
250.87
250.72
250.64
12
249.68
251.36
250.98
251.71
251.24
252.41
251.20
251.34
251.14
250.88
250.74
250.67
13
249.66
251.27
250.87
252.03
252.47
254.17
251.35
251.34
251.14
250.92
250.76
250.69
14
249.65
251.27
251.39
251.96
252.43
256.36
251.66
251.33
251.14
250.98
250.78
250.70
15
249.65
251.36
251.19
251.87
251.55
254.62
251.20
251.33
251.14
251.01
250.81
250.71
16
249.64
251.59
251.14
251.46
251.19
253.55
251.49
251.32
251.13
251.02
250.81
250.72
17
249.64
251.51
251.27
251.33
252.56
252.31
251.65
251.31
251.13
251.01
250.79
250.73
18
249.64
251.48
251.25
251.37
254.86
251.89
251.42
251.30
251.13
251.01
250.79
250.74
19
249.63
251.35
251.16
251.42
253.54
251.51
251.22
251.29
251.13
250.98
250.78
250.76
20
249.63
251.27
251.22
251.30
252.09
252.31
251.30
251.28
251.12
250.97
250.76
250.77
21
249.62
251.48
251.09
251.41
251.78
252.69
251.39
251.27
251.12
250.98
250.75
250.77
22
249.62
251.32
251.18
251.33
251.70
252.80
251.54
251.26
251.12
250.99
250.74
250.81
23
249.62
251.35
251.03
251.39
251.34
253.06
251.45
251.25
251.12
251.00
250.73
250.91
24
250.93
251.33
251.06
251.66
251.42
252.30
251.40
251.24
251.12
251.00
250.72
250.94
25
250.37
251.41
251.10
251.91
251.45
251.92
251.35
251.23
251.12
250.99
250.70
250.95
26
250.13
251.75
251.18
252.18
251.42
251.71
251.26
251.22
251.12
250.99
250.67
250.95
27
249.83
252.38
251.16
251.69
251.53
252.29
251.24
251.21
251.12
251.00
250.65
250.95
28
249.87
252.18
251.28
251.52
251.36
253.21
251.22
251.20
251.12
251.01
250.64
250.94
29
250.01
251.88
251.26
251.41
251.69
251.70
251.20
251.19
251.12
251.02
250.63
250.95
30
250.38
251.65
251.14
251.23
252.15
251.97
251.19
251.18
251.12
251.03
250.95
31
251.26
251.71
252.86
251.18
251.12
251.05
250.94
----------
--------------
Mean
249.79
251.37
251.22
251.52
252.00
252.59
251.66
251.31
251.13
250.98
250.78
250.75
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
250.93
252.38
251.91
252.18
254.86
256.36
253.41
251.40
251.14
251.09
251.04
250.95
256.36
Min
249.62
250.46
250.74
251.00
251.02
251.48
251.18
251.18
251.12
250.86
250.63
250.58
249.62
256.70
m. (MSL.) ,
247.50
m. (MSL.) ,
River Bed 247.71
m. (MSL)
258.22
m. (MSL.) ,
255.69
m. (MSL.) ,
Drainage Area 948 Square Kilometers
at 09.00 Hours , on Sep 14 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation