Basic HTML Version
274
Location : on left bank at Ban Sop Tam.
371
sq.km.
Drainge Area
WATER YEAR : 2012
WANG RIVER BASIN
Nam Mae Tam at Ban Sop Tam , Lampang (W.18A)
Lat 18 - 02 - 38 N Long 99 - 14 - 14 E
Amphoe
Ko Kha
Changwat
Lampang
Ban
Sop Tam
Water - stage recorder
+204.920 m. (MSL.)
B.M.-H.D.
About 21 meters from the top staff gage.
Elevation
Recording
Arithmetic mean of 24 readings
2011 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+213.703 m. (MSL.)
Bench Mark
Type of Gage
2011 to date
-
2011 to date
Fairly stable because of backwater effect.
No overbank flow.
Records fair.Stage-discharge relation defined by 47 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
205.20
204.99
205.37
205.22
205.30
205.25
205.51
205.58
205.30
205.05
204.93
204.91
2
205.20
204.99
205.46
205.26
205.26
205.20
205.80
205.44
205.25
205.04
205.01
204.97
3
205.20
204.99
205.90
205.29
205.22
205.36
205.89
205.41
205.22
205.02
205.08
204.97
4
205.21
204.99
205.89
205.31
205.21
207.45
205.90
205.54
205.23
205.01
205.32
205.00
5
205.21
204.99
205.63
205.29
205.21
208.47
206.38
205.47
205.23
205.01
205.21
205.00
6
205.21
204.99
205.80
205.41
205.20
206.74
207.01
205.39
205.21
205.01
205.14
204.99
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
205.21
205.04
205.63
205.72
205.22
206.65
207.08
205.36
205.19
205.00
205.13
204.97
8
205.20
206.50
205.66
205.52
205.64
208.44
206.53
205.31
205.18
205.00
205.12
204.98
9
205.20
206.07
206.15
205.57
205.18
209.33
205.82
205.30
205.16
204.98
205.10
204.98
10
205.18
205.86
206.52
205.80
205.19
208.42
205.62
205.32
205.15
204.97
205.10
204.97
11
205.18
205.75
206.13
205.62
205.19
207.90
205.52
205.31
205.13
204.98
205.08
204.97
12
205.18
205.64
205.62
205.49
205.19
207.70
205.50
205.30
205.12
204.98
205.06
204.96
13
205.17
205.54
205.47
205.47
205.19
207.22
205.58
205.31
205.12
204.96
205.07
204.95
14
205.16
205.44
205.43
205.42
205.20
209.28
205.51
205.30
205.12
204.96
205.06
204.94
15
205 15
205.35
205.41
205.39
205.24
209.32
205.42
205.28
205.11
204.96
205.05
204.93
.
16
205.15
205.28
205.38
205.37
205.26
210.85
205.40
205.28
205.09
204.97
205.04
204.93
17
205.14
205.27
205.36
205.37
205.20
209.45
205.39
205.29
205.07
204.97
205.03
204.94
18
205.13
205.26
205.36
205.36
205.19
207.38
205.37
205.28
205.05
204.96
205.03
204.91
19
205.12
205.25
205.37
205.33
205.20
206.41
205.32
205.25
205.04
204.96
205.02
204.84
20
205.11
205.24
205.38
205.31
205.20
206.15
205.36
205.22
205.03
204.97
205.00
204.86
21
205.10
205.23
205.36
205.27
205.29
205.86
205.33
205.23
205.02
204.97
205.00
204.85
22
205.09
205.23
205.39
205.25
205.71
205.81
205.31
205.22
205.02
204.96
204.99
204.83
23
205.08
205.22
205.37
205.22
205.36
205.65
205.29
205.22
205.01
204.96
204.97
204.83
24
205.06
205.21
205.35
205.30
205.22
205.52
205.28
205.21
205.02
204.96
204.96
204.83
25
205.03
205.28
205.33
205.49
205.20
205.52
205.27
205.20
205.03
204.96
204.94
204.84
26
205.00
206.05
205.30
205.41
205.19
205.52
205.24
205.20
205.04
204.95
204.92
204.84
27
205.00
205.82
205.27
205.40
205.39
205.52
205.23
205.21
205.05
204.94
204.95
204.82
28
205.00
205.57
205.27
205.41
205.48
205.52
205.25
205.26
205.06
204.94
204.92
204.81
29
204.99
205.46
205.27
205.41
205.25
205.56
205.31
205.37
205.06
204.95
204.82
30
204.99
205.41
205.26
205.38
205.26
205.53
205.30
205.36
205.06
204.93
204.84
31
205.38
205.33
205.31
205.57
205.06
204.92
204.84
----------
--------------
Mean
205.13
205.40
205.54
205.40
205.27
206.97
205.62
205.31
205.11
204.97
205.04
204.91
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Max
205.21
206.50
206.52
205.80
205.71
210.85
207.08
205.58
205.30
205.05
205.32
205.00
210.85
Min
204.99
204.99
205.26
205.22
205.18
205.20
205.23
205.20
205.01
204.92
204.92
204.81
204.81
211.14
m. (MSL.) ,
204.92
m. (MSL.) ,
River Bed 204.78
m. (MSL.)
213.03
m. (MSL.) ,
213.09
m. (MSL.) ,
Drainage Area 371 Square Kilometers
at 05.00 Hours , on Sep 16 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation