Rai Jawa North Canal Hydraulic System
قناة راي جاوا الشمالية · North Canal Rai Jawa Jordan · Rai Wadi Rajil North
Early Bronze Age IA·Proto-Jawa·🇯🇴 Mafraq Governorate, Rijm al-Rai area, Jawa hinterland north wadis, Wadi Rajil north tributary 3 km north of Jawa town, Jordan
About
About Rai Jawa North Canal Hydraulic System
Rock-cut spate canal 1.8 km long, 1.5 m wide, diverting the northern Wadi Rajil tributary flood onto a 12-ha spate field system (bunded plots) 3 km north of Jawa town, linked to the main Jawa reservoir network but operating as an outer field system for barley and wheat. The canal with basalt-slab check dams and cross-bunding evidences the extensive infield–outfield spate agriculture that supported Jawa's proto-urban population beyond immediate reservoir irrigation. Helms mapped 18 bunds; Whitehead 2016 soil geochemistry proved seasonal flood farming.
Why it mattersHinterland spate canal showing Jawa as field-system town not cistern-only, with 12-ha outer irrigation.
Open questions
Mysteries & theories
Mysteries
- 01Canal vs natural wadi disambiguation
- 02Yield estimate for 12 ha
Theories
- 01Jawa hinterland agricultural catchment
- 02Desert irrigation extensive vs intensive model
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.3100–3000 BCE (EB IA)
- Period
- Early Bronze Age IA
- Culture
- Proto-Jawa
- Builders
- Jawa hinterland communities
- Purpose
- Spate field irrigation — tributary flood harvesting for hinterland grain
- Abandoned
- c.3000 BCE with Jawa abandonment
- Rediscovered
- 1980 Helms hinterland map; 2016 Braemer Rai field prospection
- Excavation
- Partially excavated
c.3100 BCE
Rai north canal cutting
c.3000 BCE
12 ha bunded field peak
2016
Whitehead geochemical proof of spate fields
On the ground
Structures & features
32.3550° N · 37.0050° E · 1015 m · 2 mapped features
Rai North Canal — Head Gate and Check Dam 1
hydraulicCanal head at north wadi bed with basalt-slab gate and 3 check dams downstream
32.3560° N · 37.0060° ERai North Canal — Bunded Field Plot 7
hydraulicEarthen bunded plot 25×18 m with flood silt stratigraphy excavated
32.3540° N · 37.0040° E