Basic HTML Version
638
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WATER YEAR : 2013
WEST COAST - GULF BASIN
Khlong Cha Kra at Ban Cha Kra Bon , Prachuap Khiri Khan (Gt.18)
Lat 11 - 26 - 48 N Long 99 - 34 - 09 E
Locat on : on e t an at t e r ge o P et Kasem H g way.
88
sq.km.
Staff gage
+11.715 m. (MSL.)
B.M.-H.D.
On left bank at the abutment of the bridge.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
+17.228 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Thap Sakae
Changwat
Prachuap Khiri Khan
Ban
Cha Kra Bon
Arithmetic mean of 5 readings
1987 to date
1987 to date
-
1987 to date
Stable.
No overbank flow.
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Records good. Stage-discharge relation defined by 26 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
12.61
12.69
12.66
12.75
12.86
12.72
12.97
12.96
13.00
12.71
12.65
12.67
2
12.60
12.68
12.66
12.75
12.83
12.71
12.95
12.92
12.96
12.70
12.65
12.67
3
12.59
12.68
12.65
12.74
12.80
12.70
12.92
12.91
12.91
12.69
12.65
12.66
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
12.58
12.67
12.66
12.73
12.79
12.70
12.88
12.90
12.89
12.69
12.65
12.66
5
12.56
12.67
12.67
12.73
12.79
12.69
12.86
12.89
12.88
12.68
12.66
12.66
6
12.55
12.68
12.66
12.72
12.79
12.69
12.98
12.89
12.88
12.68
12.66
12.66
7
12.54
12.78
12.66
12.73
12.78
12.75
13.51
12.88
12.87
12.67
12.66
12.66
8
12.53
12.76
12.65
12.74
12.78
12.80
13.21
12.89
12.86
12.67
12.66
12.65
9
12.53
12.73
12.65
12.77
12.77
12.78
13.23
12.97
12.86
12.67
12.67
12.65
10
12.52
12.72
12.65
12.72
12.77
12.74
13.22
12.94
12.85
12.66
12.67
12.65
11
12.51
12.72
12.65
12.71
12.76
12.73
13.15
12.90
12.84
12.65
12.67
12.66
12
12 51
12 70
12 64
12 70
12 78
12 72
13 22
12 89
12 84
12 66
12 67
12 66
.
.
.
.
.
.
.
.
.
.
.
.
13
12.64
12.69
12.65
12.69
12.76
12.72
13.15
12.88
12.83
12.66
12.66
12.66
14
12.81
12.69
12.65
12.68
12.76
12.70
13.12
12.88
12.82
12.67
12.66
12.66
15
12.89
12.72
12.70
12.68
12.75
12.70
13.10
12.87
12.82
12.68
12.66
12.66
16
12.96
12.72
12.70
12.68
12.73
12.72
13.05
12.91
12.81
12.69
12.65
12.66
17
12.88
12.77
12.70
12.69
12.73
12.75
12.99
14.33
12.80
12.70
12.65
12.65
18
12.81
12.76
12.70
12.70
12.72
12.77
12.91
13.68
12.80
12.70
12.65
12.65
19
12.74
12.75
12.69
12.70
12.72
12.77
12.87
13.12
12.79
12.70
12.65
12.65
20
12.72
12.73
12.68
12.72
12.70
12.79
12.87
13.07
12.79
12.69
12.65
12.65
21
12.70
12.72
12.68
12.72
12.70
12.95
12.90
13.01
12.78
12.69
12.66
12.65
22
12.70
12.70
12.68
12.73
12.69
13.15
12.99
12.99
12.78
12.68
12.68
12.66
23
12.69
12.70
12.69
12.72
12.69
14.70
12.97
14.24
12.77
12.68
12.70
12.74
24
12.68
12.69
12.70
12.71
12.70
14.42
12.96
13.94
12.77
12.68
12.70
12.92
25
12.68
12.69
12.70
12.71
12.69
13.36
12.96
13.48
12.76
12.67
12.69
12.89
26
12.69
12.68
12.70
12.72
12.69
13.14
12.94
13.20
12.76
12.67
12.68
12.77
27
12.72
12.68
12.79
12.75
12.68
13.01
12.94
13.13
12.75
12.66
12.68
12.76
28
12.70
12.67
12.76
12.73
12.68
12.95
12.96
13.13
12.75
12.66
12.67
12.75
29
12.69
12.67
12.75
12.72
12.67
12.97
12.98
13.09
12.74
12.66
12.75
30
12.69
12.67
12.76
12.77
12.69
12.99
13.01
13.04
12.74
12.65
12.74
31
12.66
12.85
12.72
12.97
12.72
12.65
12.69
----------
--------------
Mean
12.67
12.70
12.68
12.72
12.74
12.94
13.02
13.13
12.82
12.68
12.66
12.69
Max
12.96
12.78
12.79
12.85
12.86
14.70
13.51
14.33
13.00
12.71
12.70
12.92
14.70
Min
12.51
12.66
12.64
12.68
12.67
12.69
12.86
12.87
12.72
12.65
12.65
12.65
12.51
14.80
m. (MSL.) ,
11.72
m. (MSL.) ,
River Bed 12.36
m. (MSL.)
16.18
m. (MSL.) ,
16.25
m. (MSL.) ,
Drainage Area
88
Square Kilometers
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
at 12.00 Hours , on Sep 23, 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation