Wadi Nadiya 1 and 2: Neolithic Barrage Systems in the Jafr Basin,
Southern Jordan
Prof. and Dr. Sumio Fujii
Kanazawa University, Japanfujiikun@staff.kanazawa-u.ac.jp
April 5, 2012

1. Research Background and Objective
The Jafr Basin Prehistoric Project, headed by the author, started in 1997 with aview to tracing the process of pastoral nomadization in southern Jordan on the basis ofarchaeological evidence. For this objective, we have continuously excavated more thana dozen archaeological sites varying in date and nature from Neolithic agro-pastoral
outposts to Early Bronze Age cairn fields. Our recent efforts have been focused on thecomprehensive investigation of water catchment facilities that sustained the initial
pastoral transhumance in the Jafr Basin (Fujii 2007a, 2007b, 2010a, 2010b; Fujii et al.
2011). This field season dealt with two barrage sites, Wadi Nadiya 1 and 2 (Fig. 1). The
first week was devoted to a land survey of Wadi Nadiya 2 that is to be excavated in thenext season. The second and third weeks addressed a complementary investigation ofWadi Nadiya 1 that was partly excavated in the last field season.
2. Investigation at Wadi Nadiya 1
Wadi Nadiya 1 is an extramural barrage site ca. 50 km NNE of al-Jafr and occupies
the lower edge of a semi-open playa system that flows into the upper reach of Wadi
Nadiya, one of upper tributaries of Wadi al-Hasa. The site contains two stone-built
barrages, both of which were partly excavated in the 2011 summer field season (Fujii etal. n.d.). This season addressed a complementary investigation of the upper barrage (i.e.
Barrage 1) that holds a key to understanding the Jafr PPNB barrage system.
The investigation has shown that: 1) a large number of pits for procuring
construction material were dug in front of the barrage wall; 2) the eastern half of thebarrage wall was protected with a subterranean masonry retaining wall built at the lower
1edge of the pits; 3) the western half, on the other hand, was devoid of such a robust
retaining wall and, instead, based on an embankment constructed again at the lower
edge of the pits (Figs. 1-3). The pits, up to ca. 1.2 m deep from the contemporary
ground surface, were probably not backfilled soon and formed a large composite pond
for supplying drinking water to initial pastoral transhumants and their livestock until
they were fully buried with fluvial deposits. In view of the scale and density of the pits,
it is conceivable that the barrage was gradually constructed over a long time. The
existence of such a large-scale barrage equipped with a carefully designed subterranean
structure demonstrates that the Jafr Pastoral PPNB had a high level of water use andcivil engineering technology. This makes sense, however, when we consider theessential role of water for the penetration into the arid margin.
Understandably, no in situ finds were recovered at the extramural barrage site.
However, a grooved stone weight and a few heavy-duty flint tools probably used for
digging the large pits were found in the upper and lower fill layers in front of theretaining wall (Fig. 5). The former artifact is a standard equipment of the Jafr PPNB,
and every barrage (and its neighboring outpost) known to date in the Jafr Basin has
produced it. It is possible that as with the other examples, the unique artifact wasoriginally incorporated to the central protruding reinforcement wall as a good lucktalisman or a ritual object intended to secure the safety and longevity of the barrage. Inaddition, an early Islamic gravestone (Fig. 6) and a dozen gray ware sherds occurredagain as stray finds in the fill layers. They were probably washed down the original
playa or wadi by seasonal floods.
Barrage 2 was also briefly re-examined. The limited reinvestigation confirmed thatas with the western half of the upper barrage, it was constructed on a large embankment.
3. Investigation at Wadi Nadiya 2
The other barrage system of Wadi Nadiya 2 is located ca. 1.5 km lower of Wadi
Nadiya 1 with the Azraq-Ma’an Highway in between. Due to time constraints, our field
operation was limited to the land survey of the site. The site consists of three stone-built
barrages dotted along a small wadi at intervals of ca. 150 m. Overall, they are smaller inscale and more closed in form than the two barrages of Wadi Nadiya 1, being
accompanied with a well-developed embankment. Among others, Barrage 3 is a typicalexample, being semi-circle in general plan and equipped with a soil and rubble bank ca.
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0.3 m high from the present playa surface (Fig. 7). It is intriguing to hypothesize thatthe three barrages represent subsequent forms of the Wadi Nadiya 1 barrage system, but
a final conclusion must await a full-fledged investigation.
4. Summary
The complementary investigation at Barrage 1 of Wadi Nadiya 1 has provided
valuable insights into the Jafr PPNB barrage system. Unexpected was the fact that thebarrage was accompanied with a large number of material procurement pits and a robust
subterranean structure. The investigation result has enabled us to realize anew that
Neolithic Jordan had sophisticated civil engineering technology of the world heritageclass. The next field season, scheduled in the summer of this year, is to address acomprehensive investigation of the neighboring barrage site of Wadi Nadiya 2.
5. References
Fujii, S. (2007a) Wadi Abu Tulayha and Wadi Ruweishid ash-Sharqi: An Investigation ofPPNB Barrage Systems in the Jafr Basin. Neo-Lithics 2/07: 6-16.
Fujii, S. (2007b) PPNB Barrage Systems at Wadi Abu Tulayha and Wadi Ruweishid
as-Sharqi: A Preliminary Report of the 2006 Spring Field Season of the Jafr Basin
Prehistoric Project, Phase 2. ADAJ (Annual of the Department of Antiquities ofJordan) 51: 403-427.
Fujii, S. (2010a) Domestication of Runoff Water: Current Evidence and New
Perspectives from the Jafr Pastoral Neolithic. Neo-Lithics 2/10: 14-32.
Fujii, S. (2010b) Wadi Abu Tulayha and Neolithic Dam Survey in the Jafr Basin.
American Journal of Archaeology 114: 552-554.
Fujii, S., Adachi, T., Quintero, L.A., and Wilke, P.J. (2011) Wadi Quweir 106: ANeolithic Barrage System in the Northeastern al-Jafr Basin. ADAJ 55 (in press).
Fujii, S. Adachi, T., Endo, H., Arimatsu, Y. and Nagaya, K. (n.d.) Wadi Nadiya 1:

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Another PPNB Barrage System in the Northern Part of the al-Jafr Basin, SouthernJordan. ADAJ 56 (in preparation).

Fig. 1

Wadi Nadiya 1 and 2: site map.

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Fig. 2Fig. 3

Wadi Nadiya 1: general view of Barrage 1 (looking NE).

Wadi Nadiya 1: general view of Barrage 1 (looking NW).
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Fig. 4

Wadi Nadiya 1: material procurement pits in front of Barrage 1 (looking N).

Fig. 5

Wadi Nadiya 1: grooved stone weight from Barrage 1.
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Fig. 6

Wadi Nadiya 1: early Islamic gravestone from a fill layer of Barrage 1.

Fig. 7

Wadi Nadiya 2: general view of Barrage 3 (looking N).
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