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WATER YEAR : 2013
SALAWIN RIVER BASIN
Nam Mae Pai at Ban Tha Pong Daeng , Mae Hong Son (Sw.5A)
Lat 19 - 16 - 06 N Long 97 - 56 - 55 E
Locat on : on e t an at Ban T a Pong Daeng.
4,470
sq.km.
Staff gage
+175.757 m. (MSL.)
B.M.-H.D.
On left bank near the station office.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
+187.423 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Mueang
Changwat
Mae Hong Son
Ban
Tha Pong Daeng
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
Arithmetic mean of 3 readings
1980 to date
1984 to date
-
1984 to date
Fairly stable.
No overbank flow.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Records good. Stage-discharge relation defined by 143 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
175.49
175.45
175.46
175.56
176.14
176.90
176.94
176.45
175.81
175.72
175.62
175.53
2
175.50
175.44
175.45
175.54
176.29
177.04
176.88
176.37
175.80
175.72
175.61
175.53
3
175.49
175.46
175.47
175.53
176.00
176.72
176.87
176.30
175.84
175.71
175.61
175.53
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
175.49
175.52
175.49
175.52
175.95
176.54
176.76
176.25
175.83
175.71
175.61
175.54
5
175.49
175.56
175.51
175.54
175.90
176.47
176.67
176.20
175.86
175.71
175.61
175.53
6
175.49
175.54
175.56
175.54
175.86
176.65
176.68
176.16
175.84
175.70
175.60
175.52
7
175.49
175.58
175.58
175.75
175.79
176.72
176.78
176.14
175.83
175.69
175.59
175.52
8
175.48
175.56
175.55
175.67
176.02
177.09
176.64
176.12
175.82
175.69
175.60
175.52
9
175.47
175.53
175.53
175.63
176.64
177.06
176.52
176.10
175.81
175.68
175.59
175.52
10
175.46
175.53
175.52
175.68
177.39
176.93
176.44
176.09
175.80
175.68
175.58
175.52
11
175.46
175.53
175.49
175.65
176.96
176.66
176.37
176.07
175.80
175.68
175.59
175.53
12
175 48
175 51
175 70
175 69
176 87
176 55
176 34
176 06
175 80
175 67
175 57
175 54
.
.
.
.
.
.
.
.
.
.
.
.
13
175.47
175.50
175.62
175.66
176.90
176.54
176.30
176.06
175.80
175.67
175.57
175.52
14
175.46
175.49
175.55
175.63
177.05
176.76
176.27
176.04
176.05
175.67
175.58
175.53
15
175.46
175.48
175.51
175.60
176.93
177.80
176.24
176.08
176.34
175.67
175.58
175.53
16
175.48
175.47
175.49
175.59
176.80
177.68
176.21
176.05
176.22
175.67
175.56
175.51
17
175.46
175.47
175.48
175.69
176.56
177.47
176.17
176.03
176.00
175.66
175.57
175.52
18
175.46
175.46
175.45
175.79
176.54
177.33
176.17
176.01
175.90
175.64
175.57
175.53
19
175.46
175.46
175.45
175.69
176.43
177.07
176.73
176.14
175.85
175.64
175.57
175.53
20
175.46
175.46
175.47
175.63
176.34
176.98
176.47
176.18
175.82
175.65
175.56
175.52
21
175.46
175.57
175.52
175.60
176.35
176.82
176.48
176.07
175.81
175.64
175.56
175.52
22
175.45
175.56
175.51
175.59
177.81
176.73
176.67
176.02
175.79
175.63
175.55
175.51
23
175.46
175.53
175.50
175.61
177.83
176.66
176.80
175.98
175.78
175.63
175.56
175.50
24
175.46
175.52
175.49
175.77
177.60
176.64
176.55
175.96
175.77
175.64
175.56
175.51
25
175.48
175.52
175.50
176.00
176.97
176.79
176.47
175.95
175.75
175.63
175.55
175.51
26
175.47
175.51
175.49
175.93
176.91
177.48
176.33
175.93
175.74
175.63
175.56
175.52
27
175.46
175.50
175.58
175.83
176.86
177.33
176.29
175.92
175.74
175.63
175.55
175.52
28
175.45
175.49
175.58
175.78
176.67
178.20
176.57
175.91
175.73
175.63
175.54
175.52
29
175.45
175.49
175.57
175.79
176.50
178.02
177.24
175.90
175.74
175.63
175.52
30
175.46
175.48
175.55
176.00
176.40
177.20
176.76
175.90
175.73
175.62
175.50
31
175.47
176.30
176.34
176.60
175.72
175.61
175.49
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--------------
Mean
175.47
175.50
175.52
175.70
176.63
177.03
176.56
176.08
175.84
175.66
175.58
175.52
Max
175.50
175.58
175.70
176.30
177.83
178.20
177.24
176.45
176.34
175.72
175.62
175.54
178.20
Min
175.45
175.44
175.45
175.52
175.79
176.47
176.17
175.90
175.72
175.61
175.54
175.49
175.44
178.56
m. (MSL.) ,
175.76
m. (MSL.) ,
River Bed 174.74
m. (MSL.)
183.88
m. (MSL.) ,
181.48
m. (MSL.) ,
Drainage Area 4470 Square Kilometers
at 20.00 Hours , on Sep 28 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation
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