Cambodia Geography will help you knowing more and analytic on whether profit or not to invest on Agriculture sector in Cambodia and will drive you plan on Cambodian Irrigation management.

1. Proper Irrigation Plan for
Cambodia
By NARA NOUALYNY

2. CAMBODIA GEOGRAPHY
There 3 types divided:
1). Lowland Area
2). Upland Area or Mountain ranges
3). Coastal Area

3. Main Points in Cambodia
1. Border with Vietnam length 1,228 Km
2. Border with Lao length 542 Km
3. Border with Thailand length 800 Km
Area
1. Total Area:: 181,035 Km2
2. Land: 176,515 Km2
3. Divided into 25 provinces and 159 Districts
4. Water: 4,520 Km2
5. Arable land: 23.23%
6. Permanent crops: 0.88%
7. Irrigated land: 3,536 Km2
8. Fresh water withdrawal ( domestic/industrial/agricultural)
:
Total: 2.18 Km3
Per capita: 159.8 Km3

4. Rainfall: 1300-
1500 mm
Two month dry
season
17,237 Km2
Area
potential
?

5. 1). Provincial in classified low central
plain
1. Battambang
2. Siemreap
3. Kg. Thom
4. Kg. Chnang
5. Pursat
6. Kandal
7. Steung Treng
8. Prey Veng
9. Takeo
10.Kg. Speu
11. Pailand
2). Provincial in classified upland
central plain or mountain ranges
1. Kratie
2. Kg. Cham
3. Tbong Khmum
4. Mundulkiri
5. Rattanak Kiri
6. Bantteaymeanchey
7. Preah vihea
8. Steung treng
3). Provincial in classified coastal area
1. Kep
2. Kampot
3. Koh Kong
4. Preak Sihanouk Ville
South-Easth
&North-West South-West
North-
East & South
East

6. Tonle Sap
16000 Km2
Map of Cambodia Waterway

7. Climate Data in Some part of Cambodia
Climate data for Sihanoukville, Cambodia
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average
high °C
(°F)
31.3
(88.3)
31.2
(88.2)
32.1
(89.8)
33.7
(92.7)
32.3
(90.1)
31.2
(88.2)
30.0
(86)
30.8
(87.4)
30.8
(87.4)
30.8
(87.4)
31.2
(88.2)
31.7
(89.1)
31.43
(88.57)
Average
low °C
(°F)
23.9
(75)
24.6
(76.3)
25.4
(77.7)
25.0
(77)
26.8
(80.2)
26.3
(79.3)
25.9
(78.6)
25.1
(77.2)
25.2
(77.4)
24.7
(76.5)
24.4
(75.9)
23.5
(74.3)
25.07
(77.12)
Average
precipit
ation
mm
(inches)
28.3
(1.114)
25.2
(0.992)
50.3
(1.98)
124.8
(4.913)
207.3
(8.161)
252.7
(9.949)
341.4
(13.441)
377.2
(14.85)
320.6
(12.622)
290.4
(11.433)
138.2
(5.441)
54.4
(2.142)
2,210.8
(87.038)
Source: world weather online[36]

8. Climate Data in Some part of Cambodia
Climate data for Phnom Penh, Cambodia
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average
high °C
(°F)
31.3
(88.3)
32.2
(90)
34.1
(93.4)
35.7
(96.3)
34.3
(93.7)
33.2
(91.8)
32.0
(89.6)
32.8
(91)
32.8
(91)
31.8
(89.2)
30.2
(86.4)
30.7
(87.3)
32.59
(90.67)
Average
low °C
(°F)
23.9
(75)
23.6
(74.5)
25.4
(77.7)
26.0
(78.8)
26.8
(80.2)
26.3
(79.3)
26.9
(80.4)
25.1
(77.2)
25.2
(77.4)
25.7
(78.3)
24.4
(75.9)
23.5
(74.3)
25.23
(77.42)
Average
precipit
ation
mm
(inches)
0.0
(0)
11.3
(0.445)
6.5
(0.256)
0.0
(0)
4.8
(0.189)
34.8
(1.37)
16.1
(0.634)
40.3
(1.587)
60.5
(2.382)
65.8
(2.591)
22.7
(0.894)
3.2
(0.126)
266
(10.474
)
Source: world weather online[37]

9. Climate Data in Some part of Cambodia
Climate data for Senmonorom, Cambodia
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average
high °C
(°F)
26.0
(78.8)
27.0
(80.6)
25.0
(77)
19.0
(66.2)
25.0
(77)
25.0
(77)
27.0
(80.6)
25.0
(77)
24.0
(75.2)
25.0
(77)
24.0
(75.2)
27.0
(80.6)
24.9
(76.85)
Average
low °C
(°F)
14.0
(57.2)
13.0
(55.4)
17.0
(62.6)
13.0
(55.4)
18.0
(64.4)
19.0
(66.2)
20.0
(68)
19.0
(66.2)
18.0
(64.4)
18.0
(64.4)
16.0
(60.8)
15.0
(59)
16.7
(62)
Average
precipit
ation
mm
(inches)
30.0
(1.181)
48.0
(1.89)
21.0
(0.827)
144.0
(5.669)
90.0
(3.543)
114.0
(4.488)
282.0
(11.102)
555.0
(21.85)
192.0
(7.559)
234.0
(9.213)
129.0
(5.079)
39.0
(1.535)
1,878
(73.936)
Source: world weather online[37]

10. Overview of Cambodia's Drainage divides

11. Sources: World Bank, FAO, UN
Land Used In Cambodia