Basic HTML Version
646
Location : on left bank at Ban Na Pa.
120
sq.km.
WATER YEAR : 2014
SOUTHERN PENINSULA EAST COAST
Khlong Thadee at Ban Na Pa , Nakhon Si Thammarat (X.203)
Lat 08 - 23 - 39 N Long 99 - 54 - 55 E
Amphoe
Mueang
Changwat
Nakhon Si Thammarat
Ban
Na Pa
Drainge Area
Staff gage.
+0.000 m. (MSL.)
B.M.-H.D.
On left bank near the gage site.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic mean of 5 readings
2000 to date
+11.529 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
2000 to date
-
2000 to date
Fairly stable.
No overbank flow.
Records fair. Stage-discharge relation defined by 26 discharge measurements made in 2014.
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
7.54
7.40
7.41
7.40
7.79
7.68
8.11
8.29
8.18
9.07
7.90
7.60
2
7.50
7.40
7.60
7.40
7.74
7.62
8.24
8.21
8.13
8.89
7.90
7.60
3
7.46
7.40
7.77
7.40
7.66
7.61
8.48
8.14
8.11
8.72
7.87
7.60
4
7.42
7.40
8.08
7.40
7.52
7.63
8.88
8.08
8.16
8.61
7.84
7.58
5
7.48
7.40
7.94
7.40
7.56
7.71
8.47
8.05
8.10
8.54
7.84
7.56
6
7.47
7.40
7.81
7.40
7.61
7.61
8.81
8.01
8.06
8.53
7.84
7.55
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Gage Height in Meter (MSL.) Water Year April 1, 2014 to March 31, 2015
7
7.45
7.43
7.74
7.40
7.67
7.60
8.72
8.00
8.04
8.51
7.83
7.54
8
7.43
7.49
7.65
7.40
7.66
7.60
8.51
8.45
8.13
9.01
7.82
7.54
9
7.46
7.50
7.58
7.40
7.61
7.60
8.34
10.61
8.13
8.76
7.82
7.54
10
7.95
7.50
7.58
7.40
7.63
7.63
8.24
10.19
8.10
8.59
7.81
7.54
11
7.79
7.69
7.56
7.40
7.62
7.90
8.13
9.41
8.09
8.98
7.78
7.54
12
8.09
7.79
7.52
7.40
7.56
7.81
8.13
8.91
8.07
8.80
7.73
7.54
13
7.81
7.69
7.46
7.40
7.49
7.81
8.09
8.69
8.14
8.70
7.77
7.54
14
7.53
7.61
7.49
7.40
7.50
8.18
8.09
8.63
10.12
9.20
7.79
7.54
15
7.51
7.56
7.49
7.40
7.52
8.12
8.70
8.76
10.35
8.87
7.81
7.54
16
7.65
7.51
7.49
7.60
7.81
8.35
9.41
8.86
9.31
8.60
7.76
7.54
17
7.71
7.50
7.55
7.61
7.82
8.41
8.95
8.54
8.94
8.46
7.64
7.54
18
7.61
7.50
7.55
7.52
7.71
8.17
8.58
8.49
10.15
8.36
7.63
7.54
19
7.56
7.45
7.44
7.49
7.70
8.16
8.39
8.66
10.24
8.32
7.63
7.54
20
7.50
7.40
7.40
7.45
7.51
8.52
8.36
8.76
9.59
8.29
7.63
7.54
21
7.46
7.40
7.40
7.42
7.49
8.12
8.26
9.24
10.20
8.25
7.64
7.54
22
7.41
7.40
7.41
7.45
7.51
8.04
8.16
8.64
10.11
8.17
7.63
7.54
23
7.40
7.40
7.61
7.47
7.50
8.04
8.11
8.37
9.90
8.11
7.62
7.54
24
7.40
7.46
7.56
7.45
7.53
8.04
8.13
9.37
9.47
8.07
7.60
7.54
25
7.40
7.44
7.51
7.70
8.15
8.02
8.57
8.90
9.36
8.02
7.60
7.50
26
7.40
7.41
7.49
8.36
7.89
8.01
8.54
8.61
10.32
8.00
7.60
7.45
27
7.40
7.40
7.50
8.20
7.79
8.00
8.48
8.47
10.48
8.00
7.59
7.41
28
7.39
7.40
7.47
8.03
7.80
8.21
8.42
8.39
10.08
8.00
7.59
7.40
29
7.39
7.40
7.40
7.98
7.80
8.09
8.37
8.31
9.80
7.96
7.40
30
7.39
7.41
7.40
7.91
7.80
8.06
8.34
8.24
9.45
7.93
7.40
31
7.41
7.84
7.76
8.34
9.46
7.91
7.40
----------
--------------
Mean
7.53
7.47
7.56
7.56
7.67
7.94
8.43
8.68
9.12
8.46
7.73
7.52
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Max
8.09
7.79
8.08
8.36
8.15
8.52
9.41
10.61
10.48
9.20
7.90
7.60
10.61
Min
7.39
7.40
7.40
7.40
7.49
7.60
8.09
8.00
8.04
7.91
7.59
7.40
7.39
10.79
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 7.02
m. (MSL.)
12.30
m. (MSL.) ,
12.23
m. (MSL.) ,
Drainage Area 120 Square Kilometers
at 20.00 Hours , on Dec 14 , 2014
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation