Angkor: APSARA Regulates Stormwater in Siem Reap

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Updated 2026-09-26 5 min

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In short

●The APSARA water management team has been monitoring and regulating stormwater runoff in the Angkor Archaeological Park and Siem Reap city since September 26, 2026.
●The operation covers the Angkor site and urban areas of Siem Reap in response to continuous rains across the region.
●Expats and residents should stay vigilant, avoid flooded areas, and expect slower travel on affected routes.
●APSARA will continue monitoring as long as rainfall persists, with preventive measures to limit overflow.

Stormwater regulation

Event

September 26, 2026

Date

Angkor + Siem Reap

Area

APSARA / Khmer Times

Source

Who is acting. The water management team of the APSARA National Authority, which oversees the Angkor Archaeological Park.
When. Since September 26, 2026, in response to continuous rains in the region.
Where. Angkor Archaeological Park and Siem Reap city.
What. Monitoring and regulating stormwater runoff to prevent flooding.
What you should do. Stay vigilant, avoid flooded areas, and adjust your travel plans.

The event is ongoing: here is the timeline of prior developments and expected next steps.

Previous week: continuous rains settle over Siem Reap province, increasing runoff toward Angkor and the city.
September 26, 2026 — morning: the APSARA water management team activates monitoring of water levels and flows.
September 26, 2026 — daytime: regulation of runoff in the archaeological park and urban areas of Siem Reap.
September 26, 2026 — evening: public communication via official channels and media relays (Khmer Times Breaking News).
Following days: monitoring maintained as long as rainfall persists.
Upcoming: adjustments to preventive measures based on weather developments.

The operation spans several areas and groups, with varying effects.

Segment	Area	Details
Archaeological park	Angkor	Monitoring and regulating runoff around temples and basins.
Urban area	Siem Reap city	Managing flows to limit overflow in the city center.
Residents and expats	Citywide	Vigilance recommended, avoid flooded areas.
Tourists	Angkor and center	Travel potentially slowed, caution on tour routes.
Business activities	Siem Reap	Shops and transport may be locally disrupted.

Slower travel on some routes: allow extra time for trips to Angkor and the city center.
Localized risk of deep puddles and overflow: avoid low-lying streets known to flood.
Sightseeing and temple visits may need to be adjusted based on access conditions.
Business activities and deliveries may be disrupted: build in buffer time for appointments.
It's worth following APSARA's official channels and local media for updates.

Step 1: Check the weather and official advisories before any trip to Angkor or the city center.
Step 2: Identify low-lying and flood-prone streets around your home in advance.
Step 3: Avoid walking or riding a scooter through a flooded road whose depth you don't know.
Step 4: Plan alternative routes and allow extra time for appointments.
Step 5: Protect your documents and electronics in waterproof bags.
Step 6: Follow APSARA's official channels and local media for updates.
Step 7: In an emergency, contact the relevant local services and your close contacts.

Who is managing the stormwater situation at Angkor?

The water management team of the APSARA National Authority, which oversees the Angkor Archaeological Park.

Which areas are affected?

The Angkor Archaeological Park and Siem Reap city.

Why was this monitoring activated?

Due to continuous rains in the region, which increase runoff and flood risk.

Should expats be worried?

This is a preventive measure. The recommendation is to stay vigilant and avoid flooded areas.

How long will this last?

Monitoring will be maintained as long as rainfall persists, with adjustments based on weather developments.

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Siem Reap Hub

The community guide for expats and travelers in Siem Reap, Cambodia