Basic HTML Version
276
Location : on left bank at Ban Hai
1,392
sq.km.
WATER YEAR : 2011
WANG RIVER BASIN
Wang River at Ban Hai , Lampang (W.16A)
Lat 18 - 46 - 45 N Long 99 - 37 - 52 E
Amphoe
Chae Hom
Changwat
Lampang
Ban
Hai
Drainge Area
Water - stage recorder
+304.000 m. (MSL.)
B.M.-H.D.
On left bank about 10.00 meters from the top staff gage.
Elevation
Recording
Arithmetic means of 24 readings
1995 to date
+310.177 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
1995 to date
-
1995 to date
Fairly stable.
No overbank flow.
Records fair.The pumping station is located about 150 meters upstream from the gage site.
Stage-discharge relation defined by 44 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
305.33
304.63
306.13
304.97
306.75
306.56
306.78
305.35
304.99
304.96
305.19
305.15
2
305.33
304.61
306.12
304.84
306.35
306.53
306.73
305.09
304.98
304.96
305.19
305.15
3
305.33
304.60
305.94
304.84
306.27
306.48
306.78
305.03
304.99
304.96
305.19
305.15
4
305.33
304.78
305.53
304.82
306.20
306.36
306.76
305.18
304.99
304.98
305.39
305.15
5
305.86
305.08
305.77
304.81
306.50
305.93
306.43
305.19
304.99
305.06
305.58
305.15
6
306.07
305.10
305.33
304.80
306.49
305.27
305.34
305.19
304.99
305.07
305.95
305.15
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
305.34
305.20
305.33
304.80
306.49
305.55
305.31
305.19
304.99
305.11
305.88
305.15
8
305.33
305.20
305.32
304.79
306.54
305.57
305.30
305.19
304.99
305.10
305.87
305.15
9
305.34
305.28
305.32
304.79
306.66
305.88
305.29
305.19
304.99
305.13
306.24
305.14
10
305.34
305.83
305.31
304.81
306.65
305.94
305.28
305.18
304.99
305.18
305.77
305.14
11
305.34
305.88
305.31
304.83
306.73
305.88
305.28
305.09
305.00
305.23
305.28
305.05
12
305.34
305.97
305.11
304.81
306.74
305.59
305.28
305.20
305.00
305.23
306.04
304.96
13
305.35
306.09
304.80
304.89
306.89
305.60
305.27
305.20
305.00
305.23
306.05
304.96
14
305.34
305.33
304.81
305.12
306.83
306.65
305.26
305.19
305.01
305.11
306.05
304.98
15
305.34
304.71
304.80
305.18
306.80
306.76
305.25
305.17
305.07
305.00
305.91
304.98
16
305.33
304.78
304.79
305.18
306.77
306.61
305.25
305.18
304.96
305.00
305.73
304.97
17
305.33
305.17
304.79
305.17
306.82
305.86
305.25
305.05
305.01
305.00
305.52
305.03
18
305.33
305.49
304.81
305.16
306.78
305.90
305.25
305.06
305.11
304.99
305.34
305.09
19
305.33
305.69
304.81
305.16
306.91
305.89
305.24
305.06
305.05
304.99
305.34
305.09
20
305.33
305.95
305.35
305.16
306.81
305.97
305.24
305.06
304.96
305.03
305.34
305.09
21
305.33
306.10
305.94
305.09
306.80
305.85
305.24
305.05
304.91
305.08
305.34
305.09
22
305.33
306.09
305.46
304.92
306.76
306.70
305.23
305.01
304.88
305.07
305.34
305.16
23
305.33
306.11
304.78
305.03
306.69
306.72
305.23
304.97
304.86
305.05
305.29
305.21
24
305.33
306.17
304.77
305.19
306.56
306.66
305.22
304.97
304.91
305.05
305.16
305.20
25
305.34
306.16
304.79
305.22
306.52
306.21
305.21
304.93
304.91
305.05
305.16
305.20
26
305.33
306.16
305.08
305.22
306.51
305.88
305.21
304.93
304.94
305.05
305.16
305.20
27
305.33
306.16
305.20
305.41
306.64
306.06
305.30
305.00
304.99
305.05
305.17
305.21
28
305.33
306.15
306.34
305.68
306.63
306.65
305.69
305.00
304.94
305.04
305.17
305.20
29
304.95
306.16
306.33
305.79
306.61
306.79
305.24
305.00
304.96
305.04
305.15
305.20
30
304.64
306.15
305.74
306.06
306.65
306.79
305.22
305.00
304.96
304.92
305.21
31
306.15
306.19
306.64
305.21
304.96
304.95
305.20
----------
--------------
Mean
305.34
305.58
305.33
305.12
306.64
306.17
305.50
305.10
304.98
305.05
305.51
305.12
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Max
306.07
306.17
306.34
306.19
306.91
306.79
306.78
305.35
305.11
305.23
306.24
305.21
306.91
Min
304.64
304.60
304.77
304.79
306.20
305.27
305.21
304.93
304.86
304.92
305.15
304.96
304.60
307.17
m. (MSL.) ,
304.00
m. (MSL.) ,
River Bed 302.95
m. (MSL)
310.18
m. (MSL.) ,
310.11
m. (MSL.) ,
Drainage Area 1392 Square Kilometers
at 10.00 Hours , on Aug 1 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation