Basic HTML Version
280
Location : on right bank at the bridge.
1,549
sq.km.
Drainge Area
WATER YEAR : 2012
WANG RIVER BASIN
Nam Mae Chang at Ban Wang Phrao , Lampang (W.22)
Lat 18 - 08 - 35 N Long 99 - 24 - 48 E
Amphoe
Ko Kha
Changwat
Lampang
Ban
Wang Phrao
Water - stage recorder
+215.161 m. (MSL.)
B.M.-H.D.
On right bank at the approach of the bridge.
Elevation
Recording
Arithmetic mean of 24 readings.
2001 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+221.137 m. (MSL.)
Bench Mark
Type of Gage
2001 to date
-
2001 to date
Rather unstable because of backwater effect.
No overbank flow.
Records Fair.Stage-discharge relation defined by 49 discharge measurements made in 2012.
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
215.04
215.01
215.37
215.10
215.12
215.39
215.54
215.16
215.11
214.87
215.23
214.97
2
215.08
215.02
215.37
215.11
215.13
215.33
215.59
215.15
215.12
214.84
215.25
214.97
3
215.10
215.02
215.36
215.03
215.16
215.31
215.57
215.14
215.11
214.83
215.25
214.98
4
215.06
215.00
215.36
215.08
215.16
216.53
215.69
215.15
215.14
214.83
215.25
215.00
5
215.02
215.00
215.36
215.10
215.07
217.33
215.68
215.19
215.12
214.83
215.23
214.95
6
215.02
215.00
215.36
215.27
215.02
216.11
215.67
215.28
215.11
214.83
215.23
214.92
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
215.01
215.74
215.36
215.19
215.03
216.38
215.77
215.24
215.13
214.88
215.44
214.97
8
214.98
215.73
215.36
215.16
214.98
217.36
215.73
215.18
215.14
215.10
215.26
215.14
9
214.96
215.51
215.36
215.16
214.93
217.27
215.66
215.17
215.11
215.11
215.18
215.12
10
214.93
215.56
215.35
215.16
215.03
217.03
215.59
215.16
215.06
215.11
215.14
215.07
11
214.93
215.40
215.36
215.16
215.14
216.88
215.40
215.17
215.06
215.11
215.11
215.01
12
214.97
215.31
215.36
215.14
215.11
216.67
215.31
215.16
215.06
215.11
215.10
214.99
13
215.05
215.28
215.35
215.14
215.06
216.54
215.28
215.17
215.06
215.16
215.17
215.00
14
215.05
215.24
215.35
215.03
214.98
216.60
215.26
215.16
215.10
215.16
215.05
214.96
15
215.04
215.18
215.35
215.00
214.91
218.37
215.22
215.14
214.96
215.16
215.04
214.94
16
215.04
215.18
215.35
214.98
214.96
218.23
215.19
215.14
214.84
215.17
215.06
214.95
17
215.04
215.30
215.35
214.92
214.93
217.12
215.20
215.15
214.97
215.17
215.05
214.81
18
215.04
215.31
215.34
214.94
214.97
216.58
215.27
215.15
215.01
215.16
215.01
214.44
19
215.05
215.28
215.32
214.96
215.08
216.33
215.25
215.14
215.00
215.16
215.03
214.60
20
215.05
215.30
215.31
214.96
215.04
216.06
215.24
215.13
215.00
215.17
215.02
215.00
21
215.02
215.30
215.31
214.96
215.09
215.77
215.21
215.12
214.97
215.23
215.01
215.01
22
215.04
215.30
215.43
214.87
215.70
215.64
215.18
215.12
215.01
215.20
214.99
215.01
23
215.04
215.33
215.44
214.87
215.50
215.62
215.16
215.12
215.01
215.18
215.01
214.99
24
215.03
215.20
215.59
214.86
215.34
215.52
215.15
215.11
214.99
215.19
215.01
214.93
25
215.03
215.12
215.46
214.85
215.27
215.49
215.16
215.10
214.99
215.20
215.01
214.77
26
215.03
215.12
215.24
214.76
215.34
215.44
215.16
215.10
214.96
215.22
215.01
214.85
27
215.01
215.13
215.06
214.84
215.43
215.45
215.15
215.09
214.96
215.20
215.01
214.92
28
214.99
215.13
215.37
214.84
215.57
215.51
215.15
215.08
214.96
215.22
214.97
214.92
29
214.99
215.27
215.43
214.79
215.59
215.50
215.15
215.14
214.90
215.24
214.94
30
214.99
215.37
215.27
214.84
215.49
215.54
215.15
215.15
214.90
215.24
214.94
31
215.35
214.85
215.41
215.15
214.90
215.23
214.94
----------
--------------
Mean
215.02
215.26
215.36
215.00
215.18
216.30
215.35
215.15
215.02
215.10
215.11
214.94
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Max
215.10
215.74
215.59
215.27
215.70
218.37
215.77
215.28
215.14
215.24
215.44
215.14
218.37
Min
214.93
215.00
215.06
214.76
214.91
215.31
215.15
215.08
214.84
214.83
214.97
214.44
214.44
219.16
m. (MSL.) ,
215.16
m. (MSL.) ,
River Bed 213.45
m. (MSL.)
221.11
m. (MSL.) ,
221.22
m. (MSL.) ,
Drainage Area 1549 Square Kilometers
at 20.00 Hours , on Sep 15 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation