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WATER YEAR : 2013
BANG PAKONG RIVER BASIN
Lower Khlong Ban Na at Ban Pa Kha , Nakhon Nayok (Ny.3)
Lat 14 - 17 - 04 N Long 101 - 04 - 28 E
Locat on : on e t an near Wat Ban Pa K a.
203
sq.km.
Water - stage recorder
+6.330 m. (MSL.)
B.M.-H.D.
About 10 meters from the top staff gage.
Elevation
Recording
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
+12.695 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Ban Na
Changwat
Nakhon Nayok
Ban
Pa Kha
Arithmetic mean of 24 readings
1977 to date
1977 - 1978 , 1980, 1988 to date
-
1977 - 1978 , 1980, 1988 to date
Fairly 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. Flow effected by the local weir.
Stage-discharge relation defined by 20 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
7.03
7.52
6.73
7.27
8.09
8.31
9.85
7.87
7.14
6.93
6.83
6.83
2
7.03
7.54
6.73
7.23
8.21
7.97
9.41
7.82
7.21
6.93
6.83
6.83
3
7.03
7.52
6.73
7.23
8.16
7.69
9.44
7.80
7.22
6.93
6.83
6.83
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
7.03
7.51
6.73
7.23
7.70
7.63
10.94
7.77
7.21
6.93
6.83
6.83
5
7.03
7.49
6.73
7.23
8.27
7.69
11.24
7.75
7.18
6.93
6.83
6.83
6
7.03
7.51
6.73
7.23
8.23
7.75
10.07
7.74
7.16
6.93
6.83
6.83
7
7.03
7.50
6.73
7.23
8.01
7.62
9.58
7.70
7.13
6.93
6.83
6.83
8
7.03
7.48
6.73
7.23
8.07
7.55
9.58
7.68
7.13
6.93
6.83
6.83
9
7.03
7.47
6.73
7.23
8.40
7.75
9.22
7.66
7.13
6.93
6.83
6.83
10
7.03
7.45
6.73
7.26
8.15
8.32
8.87
7.63
7.13
6.93
6.83
6.83
11
7.03
7.45
6.73
7.33
7.94
8.70
8.70
7.63
7.08
6.93
6.83
6.83
12
7 03
7 44
6 73
7 38
7 84
8 99
8 42
7 61
7 03
6 93
6 83
6 83
.
.
.
.
.
.
.
.
.
.
.
.
13
7.03
7.43
6.73
7.39
7.78
9.47
8.40
7.62
7.03
6.93
6.83
6.83
14
7.03
7.42
6.73
7.45
7.69
9.29
8.32
7.59
7.03
6.93
6.83
6.83
15
7.03
7.42
6.73
7.43
7.60
8.84
8.31
7.61
7.03
6.93
6.83
6.83
16
7.03
7.46
7.07
7.44
7.51
9.02
8.45
7.55
7.03
6.93
6.83
6.83
17
7.03
7.45
7.60
7.47
7.44
9.61
8.96
7.51
7.03
6.93
6.83
6.83
18
7.03
7.43
7.49
7.48
7.37
9.21
9.35
7.48
7.03
6.93
6.83
6.83
19
7.03
7.41
7.46
7.48
7.39
9.46
9.47
7.48
7.03
6.93
6.83
6.83
20
7.03
7.41
7.44
7.41
7.40
12.03
9.34
7.45
7.03
6.93
6.83
6.83
21
7.03
7.41
7.47
7.34
7.38
12.67
9.22
7.40
7.03
6.93
6.83
6.83
22
7.03
7.40
7.46
7.33
7.38
12.41
8.95
7.37
6.95
6.93
6.83
6.83
23
7.03
7.40
7.42
7.33
7.38
11.53
8.65
7.33
6.93
6.93
6.83
6.83
24
7.03
7.40
7.34
7.68
7.38
10.48
8.46
7.33
6.93
6.93
6.83
6.83
25
7.03
7.36
7.33
8.55
7.44
10.04
8.27
7.30
6.93
6.93
6.83
6.83
26
7.03
7.35
7.33
8.20
7.64
9.66
8.15
7.25
6.93
6.93
6.83
6.82
27
7.03
7.34
7.34
7.91
7.69
9.37
8.08
7.23
6.93
6.93
6.83
6.74
28
7.03
7.34
7.36
7.73
7.71
9.74
8.01
7.23
6.93
6.93
6.83
6.73
29
7.03
7.31
7.35
7.56
7.77
10.13
7.97
7.23
6.93
6.93
6.73
30
7.03
7.29
7.36
7.63
7.76
10.21
7.92
7.23
6.93
6.93
6.73
31
7.25
7.97
8.01
7.94
6.93
6.93
6.73
----------
--------------
Mean
7.03
7.42
7.06
7.48
7.77
9.30
8.95
7.53
7.04
6.93
6.83
6.81
Max
7.03
7.54
7.60
8.55
8.40
12.67
11.24
7.87
7.22
6.93
6.83
6.83
12.67
Min
7.03
7.25
6.73
7.23
7.37
7.55
7.92
7.23
6.93
6.93
6.83
6.73
6.73
12.78
m. (MSL.) ,
6.33
m. (MSL.) ,
River Bed 6.27
m. (MSL.)
13.60
m. (MSL.) ,
13.63
m. (MSL.) ,
Drainage Area 203 Square Kilometers
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at 06.00 Hours , on Sep 21 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation