Comparison of Projection and Maximum Flood Occurrences
The impact of submergence area in projected year will be huge because more than 690 Ha of settlement will be totally covered by seawater in 2021, more than
887 Ha in 2026, and more than 1,549 Ha in 2031. So that with ±649 Ha of building and it surrounding that will covered permanently in 2021, ±846 Ha in
2026 and ±857 Ha in 2031. That just the landuse which utilized by human primarily, not secondarily to fulfill their need. Complete properties that will be
covered permanently by sea water in next 10, 15, and 20 years can be seen in table 4.6.
Table 4.6. Properties that affecting by sea level rises in next 10, 15 and 20 years
LANDUSE TYPE PERMANENTLY
COVERED IN
2021 Ha PERMANENTLY
COVERED IN
2026 Ha PERMANENTLY
COVERED IN
2031 Ha
Pond 56.931
70.330 70.828
Freshwater Pond 19.422
30.047 26.695
Shrub 1.007
3.427 4.067
Embankment 1963.705
2189.845 2261.841
Building 649.750
839.375 849.582
Estuary forest 4.382
4.382 4.382
Planting Area 6.603
11.863 16.586
Settlement 690.709
887.013 1041.101
Marsh 1.441
7.689 11.876
Grassland 144.079
185.738 196.264
Irrigated Farming Area 83.595
116.255 133.112
Moor 5.444
11.367 17.199
ROAD TYPE PERMANENTLY
COVERED IN
2021 m PERMANENTLY
COVERED IN
2026 m PERMANENTLY
COVERED IN
2031 m
Bridge 337.669
372.875 372.875
Flying Bridge 36.282
109.393 109.393
Collector Road 0.000
0.000 0.000
Other Type of Road 3550.602
4237.698 10474.163
Local Road 209000.660
265832.597 301876.894
National Road 2645.821
5214.808 5374.192
Footpath 5440.494
6157.219 6366.315
When spring tide occurrence comes in next month of those each specific year, the impact of sea level change will be hugher than only by sea level rise and
impacted area will be expanding. Spring tide in next 10 years Jan-2022 will increasing sea level and can reach 1.27 m above zero. With this level of sea
surface, the land area that will be impacted will reach ±5,059 Ha with all of it landuse properties, infrastructure facilities road, and water channel. Spring tide
in next 15 years Jan-2027 will increasing sea level and can reach 1.40 m above zero. With this level of sea surface, the land area that will be impacted will reach
± 5,581 Ha, covering ± 429 km of road, and ± 306 km of water channel. The ilustration of inundated area in next 10, 15 and 20 years can be seen in figure
4.11
Figure 4.11. Projecting inundated area in next 10, 15 and 20 tears from now