Scenario Definition
Ra Flood event in 2020
Rb Flood event in 2021
R0 Present baseline 2011-2021
Ra-50 Existing drainage pipe clogged 50%
R1a Near future 2022-2030 climate change RCP4.5
R1b Mid future 20231-2060 climate change RCP4.5
R1c Far future 20261-2090 climate change RCP4.5
R1d Near future 2022-2030 climate change RCP8.5
R1e Mid future 20231-2060 climate change RCP8.5
R1f Far future 20261-2090 climate change RCP8.5
R2a Return period = 2 years
R2b Return period = 5 years
R2c Return period = 10 years
R2d Return period = 25 years
R2e Return period = 50 years
R2f Return period = 100 years
R3 Urbanization in 2030
R4a Infrastructure development: main road
R4b Infrastructure development: urban drainage
R4c Infrastructure development: domestic water supply (treatment plant & distribution network)
R4 R4a + R4b + R4c
R5 Resilience strengthening:
  • Flood insurance service
  • Awareness & preparedness
  • Institutional capacity
  • Early warning communication
R6 R4 + R5

Remark:
  • For Sangkat Dangkor, Kbal Koh, and Trapeang Krasang, there is no Scenario R4c.
  • For Sangkat Dangkor, Kbal Koh, and Trapeang Krasang, Scenario R4 has no domestic water supply.