Basic HTML Version
236
Location : on left bank at the bridge on road.
550
sq.km.
WATER YEAR : 2011
PING RIVER BASIN
Nam Mae Tha at Ban Sop Mae Sapuad , Lamphun (P.77)
Lat 18 - 25 - 57 N Long 99 - 05 - 02 E
Amphoe
Mae Tha
Changwat
Lamphun
Ban
Sop Mae Sapuad
Drainge Area
Water - stage recorder
+364.378 m. (MSL.)
B.M.-H.D.
On left bank about 20 meters from the top staff gage.
Elevation
Recording.
Arithmetic means of 24 readings
1999 to date
+369.286 m. (MSL.)
Rating Operation
Period of Available Gage Records
Bench Mark
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
Type of Gage
1999 to date
-
1999 to date
Fairly stable because of backwater effect.
No overbank flow.
Records fair. Stage-discharge relation defined by 37 discharge measurements made in 2011.
Overbank Flow Conditions
General Description
Period of Rating
Rated by Flot
Rated by Current Meter
Stability of Channel Regimes
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
365.81
366.14
365.85
366.10
368.14
366.22
366.53
366.14
366.05
365.99
365.87
365.88
2
365.81
366.14
365.86
366.09
367.11
366.47
367.24
366.15
366.05
365.99
365.85
365.85
3
365.81
366.03
365.88
366.75
367.01
366.37
366.87
366.13
366.04
365.99
365.88
365.88
4
365.80
366.19
365.84
366.55
366.80
366.25
366.71
366.14
366.03
365.99
365.89
365.88
5
365.81
366.06
365.73
366.30
366.41
366.18
366.62
366.16
366.03
365.99
365.91
365.88
6
365.80
365.89
366.39
366.18
366.16
366.73
366.55
366.14
366.04
365.98
365.96
365.88
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
365.82
365.96
366.20
366.12
366.16
367.15
366.46
366.12
366.03
365.98
365.95
365.89
8
365.81
365.93
366.03
366.05
366.25
366.86
366.35
366.12
366.03
365.98
365.94
365.88
9
365.81
365.91
365.98
366.06
366.21
367.36
366.30
366.12
366.03
365.98
365.90
365.88
10
365.81
367.25
365.98
366.10
366.19
367.13
366.28
366.11
366.03
365.97
365.90
365.88
11
365.81
366.71
365.96
366.13
366.24
366.97
366.29
366.11
366.01
365.96
365.90
365.88
12
365.81
366.33
365.96
366.11
366.41
366.85
366.28
366.11
366.02
365.95
365.90
365.89
13
365.87
366.11
365.95
366.09
366.40
367.39
366.23
366.10
366.01
365.95
365.87
365.89
14
366.20
366.14
366.02
366.10
366.32
367.17
366.22
366.09
366.01
365.96
365.90
365.90
15
366.02
366.51
365.95
366.94
366.32
367.29
366.21
366.08
366.01
365.98
365.90
365.92
16
365.95
366.24
366.02
366.70
366.27
366.78
366.22
366.08
366.01
365.99
365.90
366.03
17
365.88
366.27
366.09
366.51
366.49
366.59
366.23
366.12
366.00
365.99
365.89
365.89
18
365.81
366.55
366.03
366.27
366.68
366.41
366.23
366.06
366.00
365.99
365.89
365.92
19
365.80
366.44
365.98
366.17
366.77
366.36
366.22
366.05
365.99
365.99
365.89
365.97
20
365.79
366.62
366.05
366.15
366.77
366.36
366.20
366.05
366.00
365.99
365.89
365.95
21
365.79
366.36
366.39
366.12
366.57
366.36
366.20
366.05
366.00
365.97
365.87
365.96
22
365.79
366.15
366.09
366.09
366.40
366.51
366.17
366.05
366.00
365.96
365.90
365.97
23
365.77
365.99
366.02
366.04
366.28
366.63
366.16
366.05
366.00
365.96
365.90
365.96
24
365.81
365.98
365.98
366.05
366.18
366.63
366.16
366.05
366.00
365.95
365.90
365.96
25
365.89
365.92
365.93
366.09
366.21
366.65
366.15
366.05
366.00
365.93
365.89
365.95
26
365.85
365.92
366.20
366.12
366.44
366.52
366.14
366.04
366.00
365.86
365.89
365.94
27
365.83
365.92
366.85
366.07
366.58
366.50
366.14
366.04
365.99
365.87
365.89
365.95
28
365.81
365.93
366.38
366.06
366.51
367.16
366.14
366.04
366.00
365.86
365.89
365.93
29
365.78
365.87
366.23
366.04
366.29
367.15
366.13
366.04
366.00
365.86
365.89
365.93
30
365.78
365.87
366.14
366.01
366.32
366.61
366.14
366.04
366.00
365.87
365.92
31
365.87
366.18
366.25
366.15
365.99
365.87
365.91
----------
--------------
Mean
365.84
366.17
366.07
366.20
366.49
366.72
366.32
366.09
366.01
365.95
365.90
365.92
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
366.20
367.25
366.85
366.94
368.14
367.39
367.24
366.16
366.05
365.99
365.96
366.03
368.14
Min
365.77
365.87
365.73
366.01
366.16
366.18
366.13
366.04
365.99
365.86
365.85
365.85
365.73
369.15
m. (MSL.) ,
364.38
m. (MSL.) ,
River Bed 365.42
m. (MSL)
370.12
m. (MSL.) ,
374.23
m. (MSL.) ,
Drainage Area 550 Square Kilometers
Left Bank Elevation
Right Bank Elevation
at 16.00 Hours , on Aug 1 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation