Basic HTML Version
266
Location : on right bank about 30 meters upstream from Siriyong Bridge.
8,924
sq.km.
Drainge Area
WATER YEAR : 2011
WANG RIVER BASIN
Wang River at Ban Don Chai , Lampang (W.3A)
Lat 17 - 38 - 28 N Long 99 - 14 - 01 E
Amphoe
Thoen
Changwat
Lampang
Ban
Don Chai
Water - stage recorder
+161.000 m. (MSL.)
B.M.-H.D.
On right bank about 15 meters from automatic gage building
Elevation
Recording
Arithmetic means of 24 readings
1967 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+167.074 m. (MSL.)
Bench Mark
Type of Gage
1967 to date
-
1967 to date
Fairly stable because of backwater effect.
No overbank flow.
Records good. The channel is fulled of the Mimosa pudica plants.
Stage-discharge relation defined by 46 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
160.94
161.48
161.86
162.27
162.07
163.14
163.76
162.09
161.49
161.19
161.12
161.12
2
161.09
161.20
161.69
162.08
164.49
163.20
164.14
162.06
161.50
161.19
161.11
161.12
3
161.16
161.16
161.64
162.17
165.82
163.36
165.68
161.97
161.50
161.20
161.32
161.14
4
161.07
161.60
161.61
162.68
166.31
163.19
166.68
161.87
161.49
161.20
161.55
161.22
5
161.03
161.78
161.69
162.81
165.63
162.97
166.95
161.77
161.49
161.21
161.54
161.29
6
161.04
161.92
161.93
162.34
164.35
162.76
166.00
161.70
161.48
161.21
161.49
161.31
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
161.01
162.08
162.38
161.93
163.89
162.83
164.37
161.69
161.45
161.20
161.37
161.31
8
161.03
161.88
162.29
161.69
163.68
163.19
163.34
161.71
161.47
161.22
161.28
161.31
9
161.05
161.78
161.99
161.54
163.53
163.28
162.99
161.81
161.48
161.28
161.20
161.35
10
161.11
163.82
161.75
161.50
163.33
163.39
162.91
161.77
161.47
161.25
161.18
161.35
11
161.13
165.25
161.62
161.66
163.25
164.01
162.67
161.69
161.45
161.26
161.16
161.38
12
161.14
164.73
161.63
161.91
163.97
163.92
162.62
161.68
161.44
161.25
161.16
161.37
13
161.07
163.82
161.66
161.74
164.05
163.98
162.52
161.69
161.43
161.25
161.16
161.32
14
160.92
163.36
161.59
161.44
163.85
164.18
162.44
161.70
161.40
161.24
161.19
161.40
15
160.90
163.28
161.36
161.42
163.57
164.13
162.27
161.70
161.40
161.25
161.22
161.43
16
160.88
163.13
161.18
161.74
163.48
164.24
162.37
161.70
161.37
161.30
161.44
161.39
17
160.81
162.68
161.07
162.63
163.35
163.97
162.66
161.69
161.33
161.30
161.51
161.34
18
160.76
163.02
161.06
162.74
163.20
163.60
163.10
161.66
161.30
161.29
161.55
161.30
19
160.76
163.53
161.40
162.47
163.69
163.30
162.95
161.69
161.25
161.29
161.54
161.29
20
160.82
163.24
161.45
162.34
163.38
163.25
162.64
161.67
161.20
161.28
161.49
161.29
21
160.93
163.04
161.43
162.01
163.82
163.12
162.44
161.62
161.19
161.27
161.40
161.31
22
161.35
162.68
161.39
161.84
163.99
163.02
162.31
161.58
161.18
161.27
161.36
161.30
23
161.49
162.41
161.22
161.71
163.59
163.31
162.25
161.53
161.17
161.26
161.31
161.25
24
161.44
162.25
161.10
161.55
162.96
163.07
162.16
161.44
161.17
161.24
161.28
161.21
25
161.48
162.06
161.05
161.48
162.72
163.13
162.09
161.40
161.17
161.20
161.24
161.16
26
161.71
162.12
161.14
161.63
163.12
163.33
162.06
161.38
161.19
161.17
161.19
161.13
27
161.49
162.32
161.89
161.94
163.82
163.63
162.00
161.38
161.20
161.15
161.16
161.14
28
161.18
162.26
162.95
162.00
163.63
164.06
161.95
161.37
161.18
161.15
161.15
161.19
29
161.20
162.12
162.95
161.67
163.35
164.36
161.87
161.36
161.19
161.14
161.14
161.25
30
161.26
162.03
162.61
161.54
163.10
164.40
161.79
161.39
161.20
161.13
161.29
31
161.96
161.55
163.25
161.89
161.19
161.12
161.29
----------
--------------
Mean
161.11
162.58
161.69
161.94
163.75
163.51
163.09
161.66
161.34
161.22
161.30
161.28
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Max
161.71
165.25
162.95
162.81
166.31
164.40
166.95
162.09
161.50
161.30
161.55
161.43
166.95
Min
160.76
161.16
161.05
161.42
162.07
162.76
161.79
161.36
161.17
161.12
161.11
161.12
160.76
167.05
m. (MSL.) ,
161.00
m. (MSL.) ,
River Bed 159.70
m. (MSL)
169.04
m. (MSL.) ,
169.07
m. (MSL.) ,
Drainage Area 8924 Square Kilometers
at 05.00 Hours , on Oct 5 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation