Angkor Eastern Baray Cascade & Preah Thkol Extension (East Baray Satellite)
Preah Thkol Baray · Eastern Baray Cascading Satellite · Rolous Group Extension Baray
Angkor early (Yasovarman) 9th–10th c·Khmer devaraja hydraulicians·🇰🇭 Siem Reap Province, Eastern Baray east embankment extension, Preah Thkol 4 km E of East Baray, Cambodia
About
About Angkor Eastern Baray Cascade & Preah Thkol Extension (East Baray Satellite)
8 km, 905 CE Yasovarman) on the East Baray's east dyke–spillway cascade near Preah Thkol temple, Siem Reap. 8 km laterite channel at 1:1,200 slope. Pottier 2004 lidar mapped cascade integrating East Baray overflow management—baray not static lake but flood-buffer cascade spreading monsoon overflow to Rolous plain. 8 m identical to East Baray dyke technique. 842 at Preah Thkol records Indravarman canal feeding. Monsoon regulation for Angkor Thom heartland.
Why it mattersProves East Baray was active overflow cascade not static bath; links Yasovarman to Rolous hydraulic plain.
Open questions
Mysteries & theories
Mysteries
- 01Cascade as intentional vs later silting compartments
Theories
- 01K.842 feed inscription attribution
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.905 CE (Yasovarman I East Baray) with Indravarman cascade c.890
- Period
- Angkor early (Yasovarman) 9th–10th c
- Culture
- Khmer devaraja hydraulicians
- Builders
- Yasovarman / Indravarman hydraulic corps
- Purpose
- East Baray overflow buffer cascade + Rolous plain feeder to Srah Srang lowland
- Abandoned
- 1431 (Angkor abandonment) but dam still pools
- Rediscovered
- 1995 Jacques; 2004 Pottier lidar East Baray cascade
- Excavation
- Partially excavated
905
Yasovarman digs Eastern Baray 7.5 km; Preah Thkol cascade as overflow buffer
1000
Inscription K.842 Indravarman canal feeding cascade
2004
Pottier lidar cascade 3 reservoirs 1.8 km channel to Srah Srang
On the ground
Structures & features
13.4500° N · 103.9500° E · 22 m · 2 mapped features
Preah Thkol Cascade Reservoir 1
reservoir120×80-m laterite reservoir 2.5 m deep on East Baray east spillway with sandstone sluice
13.4520° N · 103.9480° ESrah Srang Feeder Channel (1.8 km)
canal1.8-m sandstone-sluiced laterite channel at 1:1200 to Srah Srang
13.4480° N · 103.9520° E