Bangkok flood check

Does Khlong Sam Wa flood? Risk level 5 of 5

L5Severe — repeat full-area inundation in monsoon

Khlong Sam Wa is among the most flood-exposed khet in Bangkok. Repeat full-area inundation during monsoon season is on record, including weeks of standing water in 2011. Buy here on price, with eyes open — not on the assumption that it stays dry.

Ranked 4 of 50 Bangkok districts, riskiest first.

Condos we track in Khlong Sam Wa

48 buildings in Khlong Sam Wa inherit this district score. We do not have block-level elevation, so a building’s own ground height still matters.

All Khlong Sam Wa condos — yields, prices, listings →

Other districts at level 5

All 50 Bangkok districts by flood risk →

How this level is set

RealData scores each of Bangkok’s 50 khet from 0 to 5 against BMA Drainage Department records, JICA flood-frequency reports and 2011 great flood inundation mapping. The layer is district-level, not coordinate-level, and is reviewed once a year after the BMA monsoon report.

Khlong Sam Wa flood risk — frequently asked questions

Does Khlong Sam Wa flood in Bangkok?▾

Was Khlong Sam Wa affected by the 2011 Bangkok flood?▾

Yes. Khlong Sam Wa sits inside the 2011 inundation zone — the flood that reached the northern and eastern khet and held for weeks. Its current level reflects that history.

Is it safe to buy a condo in Khlong Sam Wa?▾

Flood level is one input, not a verdict. Check the building itself: ground-floor height above the soi, whether parking is at grade, and what the juristic office says about past water. The Khlong Sam Wa score tells you the baseline you are starting from.

Want a human read on the Bangkok condo market?

We pair you with a vetted broker who knows the building, the sub-market, and the foreign-quota status. We don’t take commissions from developers; the broker pays us a flat referral.