Basic HTML Version
80
Location : on right bank at the bridge of Udon Thani - Loei Highway.
362
sq.km.
Amphoe
Na Wang
Changwat
Nong Bua Lamphu
Ban
Na Klang
WATER YEAR : 2011
CHI RIVER BASIN
Lam Phaniang at Ban Na Klang , Nong Bua Lamphu (E.64)
Lat 17 - 19 - 16 N Long 102 - 05 - 32 E
Drainge Area
Staff gage
+254.473 m. (MSL.)
B.M.- Highways Dept.
On right bank downstream side 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
1979 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+261.680 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
1979 - 1980 , 1997 to date
-
1979 - 1980 , 1997 to date
Fairly stable.
Overbank flow starts at elevation +257.880 m.(MSL.), records are channel flow only.
Records good. The concrete weir situated downstream from the gage site.
Stage-discharge relation defined by 18 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
256.93
256.96
257.72
257.57
258.95
258.40
258.70
257.45
256.97
256.76
256.84
256.85
2
256.94
256.99
257.51
257.55
259.21
258.15
258.54
257.45
256.96
256.76
256.84
256.85
3
256.97
257.01
257.25
257.54
259.42
258.12
258.64
257.45
256.94
256.76
256.84
256.84
4
256.98
257.02
257.35
257.52
259.40
258.09
258.82
257.45
256.93
256.77
256.84
256.84
5
257.00
257.04
257.48
257.51
259.29
258.12
258.95
257.44
256.91
256.78
256.84
256.84
6
257.02
257.06
257.71
257.48
259.10
258.77
258.73
257.42
256.90
256.78
256.84
256.83
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
257.03
257.06
257.97
257.47
258.63
259.18
258.34
257.39
256.89
256.78
256.84
256.83
8
257.04
257.04
258.00
257.44
258.28
259.24
258.04
257.36
256.90
256.78
256.83
256.82
9
257.03
257.03
257.86
257.43
258.07
258.96
257.93
257.36
256.87
256.79
256.83
256.82
10
257.03
257.00
257.78
258.50
257.93
258.71
257.98
257.35
256.86
256.79
256.83
256.81
11
257.02
256.99
257.73
258.81
257.63
258.46
257.89
257.33
256.84
256.80
256.83
256.81
12
257.01
256.99
257.50
258.48
257.62
258.60
257.79
257.30
256.84
256.81
256.83
256.81
13
257.01
257.01
257.52
258.17
257.70
259.19
257.77
257.26
256.83
256.81
256.83
256.81
14
257.00
257.01
257.46
257.95
257.82
259.72
257.77
257.23
256.82
256.82
256.83
256.81
15
257.00
257.05
257.42
258.06
258.21
259.55
257.72
257.20
256.81
256.83
256.83
256.81
16
257.01
257.11
257.45
258.32
258.12
259.25
257.71
257.17
256.81
256.83
256.82
256.82
17
257.02
257.18
257.59
258.08
258.51
259.06
257.76
257.14
256.80
256.84
256.82
256.82
18
257.02
257.16
257.61
257.79
259.40
259.01
257.72
257.12
256.80
256.84
256.82
256.82
19
257.03
257.15
257.59
257.59
259.67
259.28
257.68
257.09
256.79
256.84
256.82
256.82
20
257.04
257.14
257.57
257.46
259.38
259.14
257.65
257.07
256.79
256.84
256.83
256.82
21
257.08
257.13
257.54
257.51
259.21
258.84
257.63
257.05
256.79
256.85
256.83
256.81
22
257.12
257.11
257.52
257.66
259.12
258.68
257.58
257.04
256.78
256.85
256.83
256.81
23
257.17
257.10
257.50
257.89
258.96
258.50
257.52
257.03
256.78
256.85
256.83
256.81
24
257.18
257.07
257.49
257.74
258.64
258.46
257.51
257.02
256.78
256.85
256.83
256.80
25
257.14
257.05
257.36
258.10
258.32
258.36
257.52
257.01
256.78
256.85
256.83
256.80
26
257.10
257.80
257.69
258.47
258.16
258.11
257.50
257.00
256.78
256.86
256.84
256.80
27
257.06
258.52
257.74
258.65
258.21
258.21
257.48
257.00
256.78
256.86
256.84
256.80
28
257.02
258.58
257.65
258.40
258.41
258.96
257.48
256.99
256.77
256.85
256.85
256.80
29
256.99
258.15
257.60
258.36
258.41
259.10
257.47
256.99
256.77
256.85
256.85
256.79
30
256.97
257.95
257.53
258.39
258.17
258.96
257.47
256.98
256.77
256.84
256.79
31
257.87
258.45
258.20
257.46
256.77
256.84
256.79
----------
--------------
Mean
257.03
257.27
257.59
257.95
258.59
258.77
257.90
257.20
256.83
256.82
256.83
256.82
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Max
257.18
258.58
258.00
258.81
259.67
259.72
258.95
257.45
256.97
256.86
256.85
256.85
259.72
Min
256.93
256.96
257.25
257.43
257.62
258.09
257.46
256.98
256.77
256.76
256.82
256.79
256.76
259.82
m. (MSL.) ,
254.47
m. (MSL.) ,
River Bed 254.24
m. (MSL)
257.87
m. (MSL.) ,
258.12
m. (MSL.) ,
Drainage Area 362 Square Kilometers
at 18.00 Hours, on Sep 14, 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation