The other Genesis 6–9 timelines on this wiki ask different questions. The historicity of Noah's Flood is a belief-history: it tracks who held the Flood to be a real event across the centuries. The Flood and the Nephilim in the material record asks whether the datable ground — tablets, strata, king-lists, megaliths — corroborates a Flood at all ("is this silt band a deluge deposit?"). This page asks the next question down, and a distinct one: granting that a Flood happened, when? It walks the candidate dates — the ones the texts yield and the ones the ground yields — and rates whether any of them cohere. Corroboration and dating are separate sub-claims: a stratum can be a real catastrophe (a question for the material-record page) and still give a date that fits no biblical reckoning (the question here). So where a horizon has already been weighed for corroboration, this page points at that page rather than re-litigating it, and asks only what date it yields.
Granting the premise is not assuming the conclusion. Each candidate date is weighed on its own merits, and several are expected to come out weak — possibility is not proof, and a page's job is sometimes to report that the dates do not converge. This page also carries an axis the material-record page structurally lacks: the biblical chronology is itself disputed. The genealogies of Genesis 5 and 11 survive in three text-traditions whose numbers disagree — the Masoretic "short" chronology (on which Ussher fixed the Flood at 2348 BC), the Septuagint "long" chronology (pushing Creation and the Flood roughly a millennium earlier), and the Samaritan Pentateuch, shorter still. So "the biblical date of the Flood" is not one number but a contested range, and that dispute reaches into the Septuagint's origin and the transmission of the Hebrew text. The two argument groups below take the two axes in turn: the textual dispute (which reckoning?) and the dispute against the ground (which horizon, if any, fits?).
A note on ordering, as on the material-record page: the timeline "witnesses" below are datable evidence-sources — a stratum's deposition, a genealogy's composition, a chronographer's table — arranged by the age of the evidence, not by the age of the Flood it bears on (which is exactly what this page leaves open and tests). The order is a shelf of sources, not a claimed chronology.
Related doctrines: Primeval history (Genesis 6–9) — see also the sons of God and the Nephilim (the belief-history of the giants) · the historicity of Noah's Flood (the belief-history of the event this page tries to date) · the Flood and the Nephilim in the material record (whether the ground corroborates a Flood at all — the sub-claim this page holds distinct from dating) · the evidence under competing scenarios (the same record read under fixed presupposition-bundles — including the chronologies this page weighs — each shown beside its bill).
The chronology this page weighs is one leg of a larger story — the "unseen realm" arc from the divine council through the Nephilim and the Flood to the modern "aliens," told end to end in the supernatural-worldview synthesis.
Datable evidence-sources bearing on the date of the Flood, earliest evidence-date first (see the ordering note above). Each yields, or disputes, a candidate date; the arguments that weigh them are gathered in the "Arguments" section below.
The oldest date-bearing witness on the shelf is a physical one: the drowned shoreline, wave-cut terraces, and the freshwater-to-marine mollusc change on the Black Sea shelf, which William Ryan and Walter Pitman proposed in 1997–98 as a catastrophic early-Holocene inundation — the event their book titled Noah's Flood.1 Its bearing here is only the date it yields. Even granting the breach was catastrophic and granting it seeded a flood memory — both contested on the material-record page — the horizon sits near 5600 BC, with no textual chain running from it to the Mesopotamian flood poems four millennia later. It therefore supplies a candidate date only for those willing to sever the Flood from the biblical genealogies entirely, and nothing that could fix a date on the biblical side.
The clean silt band Leonard Woolley struck at Ur in 1929, with the comparable deposits at Kish and Shuruppak, is the horizon most often equated with the flood of the Sumerian King List and, through it, with Noah's.2 Reasoning from the Kish dynasty's reign-lengths, Max Mallowan placed the deposit near 2900–2800 BC and concluded the flood was local, not global.3 Its date-bearing value is that it sits on the short end of the range — within a few centuries of Ussher's Masoretic 2348 BC — which is why short-chronology defenders reach for it; whether it is a Flood deposit at all is weighed separately on the material-record page.
The begettings and lifespans of Genesis 5 (Adam to Noah) and Genesis 11 (Shem to Abraham) are the only witness that yields a reckonable interval from Creation to the Flood — but the three surviving text-traditions do not agree on the numbers.4 Summed, the Masoretic figures give 1656 years from Creation to the Flood, the Samaritan Pentateuch 1307, and the Septuagint about 2242 — a spread of nearly a thousand years driven mostly by whether each patriarch's begetting-age carries an added hundred years. This divergence is not a rounding error but the crux of the whole dating question, and it is developed as its own argument (below) rather than resolved here; it connects directly to the Septuagint's origin and the transmission of the Hebrew text.
The Babylonian priest Berossus, writing in Greek for Antiochus I, recorded ten kings reigning before the Flood for 120 saroi — 120 × 3,600 = 432,000 years — a span preserved through Eusebius and George Syncellus after Berossus' own text was lost.5 The ten antediluvian kings map onto the ten antediluvian patriarchs of Genesis 5, and both descend from the same Mesopotamian matrix as the Sumerian King List — but the numbers are transparently sexagesimal artifice — every antediluvian span a whole multiple of the šár (3,600 years), the 432,000 an even 120 of them — figures generated inside a numbering system, not a chronology anyone kept, which is why no one advances the Mesopotamian deep-time spans as a usable Flood date: their force is purely comparative, not a rival number Genesis must beat. Berossus stands on the shelf as the datum a biblical dating has to out-explain: the same ten-generation frame, inflated to a scale no reckoning of Genesis approaches.
Flavius Josephus, retelling the primeval history in Greek for a Roman readership, closes the antediluvian genealogy with an explicit total — the Flood came, he writes, "two thousand six hundred and fifty-six years from Adam the first man" (Antiquities 1.82).6 But that figure is a famous textual crux and cannot be laundered as settled: the transmitted 2656 varies across manuscripts (2262, 1656, 1056), and Josephus' own summed begetting-ages add instead to 2256 — the reading Isaac Vossius restored in 1659 to harmonize him with the Septuagint against the received text. However the total is read, his individual patriarch-ages carry the same centenary additions as the Septuagint's long chronology, so his interval runs roughly six centuries longer than the Hebrew's 1,656 and within a few years of the Greek — making him an early first-century witness that the longer figures were already in circulation among Jews, grist for the case that the Hebrew was later shortened (developed on the transmission-of-the-text page). Yet he is no clean second copy of the Septuagint: he sides with the Hebrew and Samaritan against the Greek in omitting the second Cainan of Genesis 11 (his Arphaxad begets Sala directly), and his numbers are internally inconsistent — a law unto themselves, at odds with the Greek, the Hebrew, and even with their own transmitted sum. His bearing here is therefore double-edged: a datable early witness to the long reckoning whose own figures are far too unstable to fix a date. He appears on this wiki also as a witness on several other timelines, gathered on his detail page.
Eusebius of Caesarea, building the first comparative Christian chronology, set the Hebrew, Septuagint, and Samaritan totals of Genesis 5–11 side by side and had to choose among them — the earliest surviving witness to the very dispute this page turns on.7 His Chronicon is the anchor the textual arguments below reuse rather than reinvent; he already lays out that the choice of text-tradition, not any single number, is what fixes the interval — and his own preference for the longer Septuagint reckoning against the Hebrew is itself part of the case that the shorter Hebrew figures were later shortened.
The Alexandrian monks Panodorus (fl. c. 400) and Annianus (fl. c. 400–412, under Patriarch Theophilus of Alexandria) built the Alexandrian world era on the Septuagint figures of Genesis 5–11 — the institutional carriers of the long chronology between Eusebius and Ussher. Reckoning the Greek begetting-ages, they placed the Flood at Anno Mundi 2242 (the total George Syncellus preferred, on Eusebius' authority, over Africanus' 2262), about 3250 BC, with Creation fixed at 25 March 5492 BC (Annianus) / c. 5493 BC (Panodorus).8 Their scheme's signature is the mystical 5500: exactly 5,500 years from Creation to the Incarnation, all on 25 March (Creation, Annunciation, Resurrection aligned). Their bearing here is double. They supply a computed Septuagint Flood date a millennium before Ussher's Hebrew 2348 BC, carried forward unbroken by the Byzantine world era (Creation 1 September 5509 BC) and the Chronicon Paschale (5507 BC, c. 630), both keeping the Flood at Anno Mundi 2242. And they are the concrete evidence for the worry the Septuagint argument below turns on — that the long figures rode inside a chronology committed in advance to seating Christ at Anno Mundi 5500, so the Creation date was set to reach the theological total rather than read off raw. They appear with the fuller reckoning on their detail page.
Writing in Roman Africa at the very moment the Alexandrian monks were building the long chronology on the Greek figures, Augustine took up the same discrepancy and came down the other way. In City of God XV.10–14 he lays out the uniform hundred-year offset between the Hebrew manuscripts and his own Latin's Septuagint parent, and — forced by the Methuselah crux, where the Greek numbers leave the patriarch alive fourteen years after the Flood he never boarded — judges the Hebrew reading true, tracing the Greek's added centuries to a single copyist's deliberate scheme (not to Jewish tampering, and not to the Seventy) and laying down the rule that where the versions diverge one should prefer "that language out of which the translation was made."9 His bearing here is as the earliest surviving Latin witness to weigh the text-critical axis this page turns on — and a pointed one, since the great champion of the Septuagint's authority nonetheless sided with the shorter Hebrew figures and, in reconstructing the copyist's motive (padding each begetting-age so the antediluvian "years" would look short), anticipated the modern inflation case against the Greek numbers, the mirror image of Eusebius' deflation charge one shelf up. Like the reckonings themselves, he bears on which text is prior, not on any Flood date; the fuller treatment is on his detail page.
James Ussher's Annales veteris testamenti fixed Creation at 4004 BC and the Flood at 2348 BC, reckoning on the Masoretic figures (1656 years from Creation to the Flood) — the canonical statement of the short chronology, and the number most readers mean by "the biblical date of the Flood."10 Ussher himself noted that the interval depends on the text chosen — Hebrew 1656, Samaritan 1307, Septuagint/Ethiopic longer — and simply preferred the Hebrew. His date is the fixed point the "short vs. long" argument below is organized around.
Sub-claims marshaled for (or against) a date, each weighed adversarially on its own page with an assessment of the interpretation it serves. Two groups take the two axes in turn: which biblical reckoning fixes the interval, and whether any material horizon fits a datable Flood; a third, standalone argument tests a different kind of evidence entirely — whether the worldwide spread of flood traditions yields a date at all. Where a line has not yet been developed, the question is stated without a verdict rather than pre-judged.
The genealogies of Genesis 5 and 11 survive in three disagreeing text-traditions, so "the biblical date of the Flood" is a contested interval, not a single number. These arguments weigh the rival reckonings against each other — the Masoretic "short" chronology (Flood c. 2348 BC), the Septuagint "long" chronology (Flood in the fourth millennium or earlier), and the Samaritan Pentateuch, shorter still (1,307 years to the Flood) — asking which better preserves the original figures and which coheres better with the datable record. They are best read as a set; each is developed as its own page in turn.
A clean reckoning that fails as a date — summing the begetting-ages of the received Hebrew text gives 1,656 years from Creation to the Flood, which Ussher chained to 2348 BC, the number most study-Bible margins still carry. The computation is unimpeachable and the claim that the Masoretic figures are the more original (against the Septuagint's inflated ones) is a genuinely live text-critical position. But the interpretation it serves — that this fixes a real Flood date — does not hold: the "original figures" premise is one side of an unsettled dispute, summing the ages assumes closed genealogies that the lists themselves show to be open (the Cainan the Greek Genesis and Luke carry but the Hebrew omits), and a literal global deluge at 2348 BC collides with the continuous, unbroken record of Egypt and Mesopotamia straddling that date. Weak — scoped to the young single-date global-Flood model, not to the Hebrew text or to a flood tradition with a real kernel.11
The better-defended reckoning that still fails as a date — read the same genealogies in the Greek and most patriarchs beget a hundred years later, stretching the interval to about 2,240–2,260 years from Creation to the Flood and pushing the event back roughly a millennium, to c. 3300–3000 BC (Creation c. 5554 BC on the leading modern reconstruction). This is the older Christian reckoning — Eusebius' Chronicon, the Byzantine Anno Mundi, the "world will last six thousand years" scheme — and the claim that the Greek figures are the original ones, deflated later in the Hebrew, is a genuinely live text-critical position, arguably the stronger of the two reckonings: it also relieves the impossibly compressed post-Flood interval and lands the Flood before the literate king-lists the short chronology collides with. But the interpretation it serves — that this fixes a real Flood date — still does not hold: the "original figures" premise is one contested side of the dispute (and the long chronology may itself be inflated to seat Christ at Anno Mundi 5500 — the total the tradition canonized, Anno Mundi 2242, resting on the one demonstrable Greek scribal slip, "167" for Methuselah, that the better-attested "187" corrects), the genealogies are open (the Greek text's own extra Cainan, which Luke repeats), and even c. 3200 BC the continuous Naqada-Egyptian and Uruk-Mesopotamian sequences run across the horizon with no rupture. Weak — the milder and more instructive failure of the two, scoped to the young single-date global-Flood model, not to the Greek text or to a flood with a real kernel.12
The third witness, edited in the act — the Samaritan Pentateuch reads Genesis 5 almost exactly like the Hebrew but cuts three begetting-ages (Jared 162→62, Methuselah 187→67, Lamech 182→53), summing to 1,307 years from Creation to the Flood, the shortest of the three reckonings. A real minority — Bertheau (1878), Jepsen (1929), Larsson (1973), and a modern prime-number argument — has advocated these as the original figures from which the Hebrew derived, so the claim clears the "is it advocated?" bar and earns a rated page. But it fails on its best case: those three cuts are precisely the amounts needed to make Jared, Methuselah, and Lamech all die in the Flood year (AM 1,307) — a transparent schematic edit inherited from the Book of Jubilees, and the cleanest single proof that at least one tradition was reworked on purpose. No advocate even converts 1,307 into a Flood date; it functions not as a rival date but as a text-critical witness — a thin priority claim, and, because it is pre-rabbinic, a genuine datum in the deflation debate. Weak — scoped to the "Samaritan-is-original" thesis, not to the Samaritan text's value as a witness.13
Granting a Flood, these arguments test whether any datable material horizon actually yields a date a biblical reckoning can accept — a young single-date deluge against the strata, the unbroken continuity of civilizations that a recent global Flood would have had to interrupt, and, at the far deep-time extreme, the end-of-Ice-Age catastrophe, which yields a date no biblical reckoning can reach. They inherit the material-record page's corroboration verdicts and ask the narrower dating question on top of them; each is developed as its own page in turn.
A date-match that is not an identity — set the shelf of firmly dated flood horizons beside the candidate biblical dates and two fits are real, one of them striking: the Liangzhu flood-collapse (uranium–thorium dated to c. 2395–2374 BC) falls within a few decades of Ussher's Masoretic 2348 BC, and the Septuagint's fourth-millennium window sits squarely among the Mesopotamian silts, with Ur just above it and Shuruppak — the tradition's own named city — just below. But a shared date is not a shared event. The tightest fit of all, Liangzhu, is a monsoon flood of the Yangtze delta that no text remembers, which shows date-coincidence proving nothing; the biblical target is a thousand years wide (the three text-traditions disagree) against a shelf of a dozen Holocene floods, so a near-hit is a selection effect rather than a discovery; and every horizon that lands near a biblical number is a non-synchronous local flood that civilizations occupied straight through, with no globally correlated stratum and, on the relevant side, no memory-chain. Weak — scoped to the global-deluge identification; the one instructive residue, the Septuagint window at Shuruppak, points at the longer reckoning and at a regional Mesopotamian flood behind the texts, the smaller kernel claim weighed on the material-record page.14
The prediction that fails at the horizon — the classic and strongest empirical objection to the short-Flood date, run as the young single-date global model's own risky prediction. A worldwide eight-survivor deluge at c. 2348 BC must leave a universal, synchronous rupture — depopulation, broken king-lists, ceramic and linguistic discontinuity, a restart from eight people — at that horizon. It is not there: at 2348 BC Egypt is mid-Sixth-Dynasty, building and administering an unbroken Old Kingdom that runs into the brief, documented First Intermediate Period and out again; Mesopotamia is at the close of Early Dynastic III on the cusp of Sargon of Akkad, its cities continuously occupied through Akkad and Ur III — and the Sumerian King List itself places its Flood before this whole sequence. The creationist repair, compressing Egyptian chronology by a millennium, is answered not by the disputed king-lists but by radiocarbon, which anchors the third-millennium sequence to the calendar independently and confirms rather than compresses it; to escape that the model must reject an independent physical method exactly where it converges with the record. Weak — scoped to the young single-date global model; a regional Mesopotamian flood (which the tradition places before this record) and the historicity of a flood memory with a real kernel both stand untouched.15
The deep-time rival that severs the Flood from the genealogies — the catastrophist candidate at the opposite extreme from Ussher: identify Noah's Flood with the end-of-Ice-Age upheaval at the Younger Dryas boundary (c. 12,900–11,700 years ago, ~10,900–9,700 BC), the end-glacial deluge advocated from Donnelly's Ragnarok (1883) through Sitchin to Graham Hancock's Ancient Apocalypse. The striking part is real and granted in full: a genuine, world-altering deglacial catastrophe did occur — abrupt cooling, meltwater discharge, a ~120-metre sea-level rise drowning the world's coasts, the solid megaflood evidence of the Channeled Scablands. But that does not make it the Flood of Genesis at the date the texts imply. The Younger Dryas onset sits ~7,000–8,500 years before even the longest biblical reckoning (the Septuagint's c. 3300 BC), so adopting it does not stretch the genealogies of Genesis 5 and 11 — it severs the Flood from them entirely, landing it before agriculture and writing; and no textual or oral chain runs from ~10,900 BC to the second-and-third- millennium Mesopotamian flood poems that are the tradition's actual ancestors. The impact-driven version adds a mechanism that is itself contested and skeptical-leaning (inherited from the material-record page), but the date would fail on the severance and the silence without it. Weak — scoped to the deep-time identification, leaving a real end-Pleistocene deluge as a possible distant kernel of the world's inundation traditions and the regional-flood reading both untouched.16
A distribution with no clock — a standalone argument on a different axis from the two groups above: not which text or which stratum, but whether the sheer ubiquity of flood stories yields a date. The creationist inference (John D. Morris, Walt Brown) is that near-universal flood traditions descend from one remembered event dispersing from a common source, which places the Flood before the peoples scattered and so, for the young-earth writers, within a few centuries of Ussher via the Babel dispersion. The distribution is real, and whether the narratives share a historical kernel is weighed on the material-record page and comes in plausible — a verdict this page inherits. But as a dating handle it fails: a scatter of stories has no internal clock. Independent invention (destructive floods are a universal human experience), diffusion along known routes, and migration-era memory (Rooth's ~300 North American myths sharing detail-motifs with Eurasia — a node the Bering crossing sets tens of millennia deep) each reproduce the same worldwide map with no single datable deluge; the only date-bearing flood text is still the second-and-third-millennium Mesopotamian one, which dates the record not the event; and the one horizon the argument names is read off the Genesis genealogies, not off the myths, which makes it circular. Where the traditions can be dated — the Australian coastal corpus, the Mesopotamian silts — they resolve into many floods at many dates. Weak — scoped to the dating claim; the spread stays consistent with a real regional flood behind the Mesopotamian strand, the kernel reading left untouched on its own page.17
W. B. F. Ryan, W. C. Pitman III, C. O. Major et al., "An abrupt drowning of the Black Sea shelf," Marine Geology 138 (1997): 119–126; popularized in W. Ryan and W. Pitman, Noah's Flood: The New Scientific Discoveries About the Event That Changed History (New York: Simon & Schuster, 1998). The rate and catastrophism are contested; see the fuller treatment and rival "Outflow Hypothesis" on the material-record page's Black Sea witness. ↩
C. Leonard Woolley, Ur of the Chaldees: A Record of Seven Years of Excavation (London: Ernest Benn, 1929) — the silt band below the Royal Cemetery, with Woolley's own caution that "one could scarcely argue for the Deluge on the strength of a pit a yard square"; and David MacDonald, "The Flood: Mesopotamian Archaeological Evidence," Creation/Evolution 8/2 (1988), on the dates and thicknesses of the Ur, Shuruppak and Kish deposits. ↩
M. E. L. Mallowan, "Noah's Flood Reconsidered," Iraq 26/2 (1964): 62–82 — the c. 2900–2800 BC date reasoned from the Kish dynasty's reign-lengths, and the conclusion that the flood was local. ↩
The begettings and lifespans are given in Genesis 5 (Adam to Noah) and Genesis 11 (Shem to Abraham). The three text-traditions' totals from Creation to the Flood — Masoretic 1656 years, Samaritan Pentateuch 1307, Septuagint c. 2242 — are set out and compared in the argument pages below; the divergence turns chiefly on the added hundred years in most Septuagint begetting-ages. ↩
Berossus, Babyloniaca, Fragment 4 (preserved by George Syncellus from Alexander Polyhistor): the ten kings and "120 saroi or 432,000 years until the Great Flood." Text at "The Great Flood: Berossus," Livius.org, with the background at "Berossus," Livius.org; a saros = 3,600 years. ↩
Flavius Josephus, Antiquities of the Jews I.iii.3 (§82): "this flood began on the twenty-seventh day of the forementioned month; and this was two thousand six hundred and fifty-six years from Adam the first man" (Whiston translation; the transmitted 2656 varies in the manuscripts — 2262, 1656, 1056), and I.vi.4 for the post-Flood line, where "Sala was the son of Arphaxad" with no intervening Cainan — the Hebrew/Samaritan sequence against the Septuagint's Genesis 11 and Luke 3:36. Primary text at Josephus, Antiquities Book I (Whiston tr.). That Josephus' own summed begetting-ages yield 2256 (roughly 600 years longer than the Masoretic 1,656 and close to the Septuagint total, his patriarch-ages carrying the same centenary additions), and that Isaac Vossius emended §82 to 2256 in his De vera aetate mundi (1659) to harmonize Josephus with the Septuagint against the received 2656, are set out by Felix Schlichter, "Flavius Josephus and early modern biblical chronology," Intellectual History Review 33/4 (2023): 587–608. Josephus' preservation of the longer figures bears on the case that the Hebrew was later shortened. ↩
Eusebius of Caesarea, Chronicon, on the antediluvian generations in the Hebrew, Septuagint, and Samaritan reckonings; treated on this wiki at Eusebius of Caesarea (his preference for the longer Septuagint figures against the Hebrew). Eusebius' comparative framework is preserved chiefly through Jerome's Latin version and the Chronography of George Syncellus. ↩
The Alexandrian world era was built by the monks Panodorus (fl. c. 400) and Annianus (fl. c. 400–412, under Patriarch Theophilus of Alexandria) on the Septuagint figures of Genesis 5–11: see "Annianus of Alexandria," Wikipedia (Creation 25 March 5492 BC; his criticism of Panodorus for "relying too much on secular sources rather than biblical sources") and "Panodorus of Alexandria," Wikipedia (5,904 years Adam–AD 412; Creation c. 5493 BC), with William Adler, "Berossus, Manetho, and 1 Enoch in the World Chronicle of Panodorus," Harvard Theological Review 76/4 (1983): 419–442 on Panodorus' handling of the king-lists. The Flood at Anno Mundi 2242 on the Septuagint reckoning (Syncellus preferring 2,242 on Eusebius' authority over Africanus' 2,262), and the 5,500-year Creation-to-Incarnation architecture, are preserved in George Syncellus, Ecloga Chronographica — William Adler and Paul Tuffin, trans., The Chronography of George Synkellos (Oxford, 2002), whose stated aim is to confirm "the incarnation of Christ at the completion of the 5500th year." The Byzantine world era (Creation 1 September 5509 BC) and the Chronicon Paschale (21 March 5507 BC, c. 630) keep the same Flood at Anno Mundi 2242 (see the Byzantine calendar and the Anno Mundi overview). The ~50-year gap from the modern LXX reconstruction of Henry B. Smith Jr. (Creation c. 5554 BC, Flood c. 3298 BC; n. 11) is discussed on the detail page. ↩
Augustine of Hippo, The City of God Book XV, chs. 10–14 (esp. ch. 11 "Of Methuselah's Age" and ch. 13 "Whether, in Computing Years, We Ought to Follow the Hebrew or the Septuagint"), trans. Marcus Dods (NPNF1 2): newadvent.org / ccel.org (ch. 13). Augustine sets out the uniform hundred-year offset between the Hebrew and the Septuagint, resolves the Methuselah crux (the Greek figures leave him alive fourteen years after the Flood) in favour of the Hebrew, assigns the Greek's extra centuries to a single copyist's design rather than to Jewish malice or to the Seventy, and concludes "we do well to believe in preference that language out of which the translation was made" — the Hebrew. His copyist-inflation account anticipates the modern case for the Masoretic figures and stands against Eusebius' mirror-image deflation charge; full treatment on his detail page. ↩
James Ussher, Annales veteris testamenti (London, 1650); English text, "The First Age: 4004 BC – 2349 BC," The Annals of the World (Flood at 2348 BC on the Hebrew reckoning of 1656 years from Creation), with the 1658 English edition at archive.org. Ussher notes the interval varies by text (Hebrew 1656, Samaritan 1307, Ethiopic/Septuagint longer) and adopts the Hebrew. ↩
Reckoned from the begetting-ages of Genesis 5 and Genesis 11 with the Flood in Noah's 600th year (Genesis 7:6) = 1,656 years; fixed at 2348 BC by Ussher's Annals of the World. On the openness of the genealogies see William Henry Green, "Primeval Chronology," Bibliotheca Sacra 47 (1890), and the extra Cainan of the Greek Genesis 11 preserved at Luke 3:36. Full weighing, with the collision against the continuous record, on the argument page. ↩
The Septuagint's higher begetting-ages and the totals (Adam–Abraham c. 3,394 years against the Masoretic 2,008; Creation c. 5554 BC, Flood c. 3298 BC on the modern reconstruction) are set out by Henry B. Smith Jr., "The Case for the Septuagint's Chronology in Genesis 5 and 11," Associates for Biblical Research; the Masoretic-priority counter-case is Jeremy Sexton et al., "The Textual Superiority of the Masoretic Text of Genesis 5 and 11," Answers Research Journal. Full weighing — the deflation-vs-inflation dispute (with the pre-Christian external attestation of the long reckoning), the resolved Methuselah variant, the open genealogies, and the softened-but-unmet collision with the record — on the argument page. ↩
The Samaritan Pentateuch matches the Masoretic Genesis 5 except for Jared (62 vs. 162), Methuselah (67 vs. 187), and Lamech (53 vs. 182), giving 1,307 years from Creation to the Flood (Adam–Abraham c. 2,249, its Genesis 11 ages inflated toward the Greek); the totals are set out in Henry B. Smith Jr., "The Case for the Septuagint's Chronology," ABR, and Ussher already recorded the Samaritan 1,307 (Annals of the World). Samaritan priority is advocated by Bertheau (1878), Jepsen (1929), and Larsson (1973) as gathered in Gerhard F. Hasel, "Genesis 5 and 11," Origins 7/1 (1980), who rebuts it: the three cuts make Jared, Methuselah, and Lamech all die in the Flood year, a schematization derived from the Book of Jubilees (Henry B. Smith Jr., "Methuselah, the Septuagint, and the Primeval Chronology of Genesis," ARJ). Full weighing on the argument page. ↩
The Liangzhu flood-collapse is dated by cave stalagmites (uranium–thorium) to the wet interval of 4345 ± 32 to 4324 ± 30 years BP (c. 2395–2374 BC): Haiwei Zhang, Hai Cheng et al., "Collapse of the Liangzhu and other Neolithic cultures in the lower Yangtze region in response to climate change," Science Advances 7/48 (2021): eabi9275; Ussher's Masoretic Flood is 2348 BC (Annals of the World) and the Septuagint's is c. 3300–3000 BC (Henry B. Smith Jr., "The Case for the Septuagint's Chronology," ABR). The Mesopotamian silt dates (Ur c. 3500 BC, Shuruppak c. 2950–2850 BC) are MacDonald's and Mallowan's (nn. 2–3 above). Full weighing — the date-vs-identity distinction, the selection effect of a wide target, and the non-synchronicity and continuous-occupation defeaters — on the argument page. ↩
At Ussher's Masoretic Flood date of 2348 BC (Annals of the World) Egypt is in the Sixth Dynasty of an unbroken Old Kingdom (c. 2686–2181 BC), which runs into the documented c. 125-year First Intermediate Period (c. 2181–2055 BC) without a chronological gap ("First Intermediate Period of Egypt," Wikipedia), and Mesopotamia is at the close of Early Dynastic III on the cusp of Sargon of Akkad (c. 2334 BC), its cities continuously occupied through Akkad and Ur III ("Early Dynastic Period (Mesopotamia)," World History Encyclopedia), with the Sumerian King List placing its Flood before the sequence. The compressed-chronology repair (David Down; cf. "Egyptian chronology and the Bible—framing the issues," CMI) is answered by the independent radiocarbon anchoring of Christopher Bronk Ramsey et al., "Radiocarbon-Based Chronology for Dynastic Egypt," Science 328 (2010): 1554–1557, tightened by Dee et al., PLOS One (2025). Full weighing, with the demographic side cross-linked to the eight-person-bottleneck test, on the argument page. ↩
The Younger Dryas — a real, abrupt climate reversal c. 12,900–11,700 years ago, with a ~120 m deglacial sea-level rise ("Younger Dryas" and "Post-glacial sea level rise," Wikipedia) — is advocated as the Flood from Ignatius Donnelly, Ragnarok: The Age of Fire and Gravel (1883; Project Gutenberg) through Zecharia Sitchin's "circa 13,000 years ago" Antarctic-slippage Deluge to the impact reading of Graham Hancock's Ancient Apocalypse and the Comet Research Group. Whether a Younger Dryas catastrophe (still less a cosmic impact) happened at all is the corroboration sub-claim rated on the material-record page (impact hypothesis contested, leaning skeptical); the biblical dates it is measured against are the Septuagint's c. 3300 BC (Henry B. Smith Jr., "The Case for the Septuagint's Chronology," ABR) and Ussher's Masoretic 2348 BC (Annals of the World). Full weighing — the genealogical severance, the missing memory-chain, and the impact-independent scope of the failure — on the argument page. ↩
The creationist common-source inference is John D. Morris, "Why Does Nearly Every Culture Have a Tradition of a Global Flood?" Institute for Creation Research (2001), and Walter T. Brown, In the Beginning, "130. Flood Legends," creationscience.com ("more than 230 flood legends … suggest a common historical event"; full text at archive.org). The corroboration verdict this page inherits is "A historical Flood tradition predicts convergent independent flood narratives — do they exist?" (plausible). The independent-invention / diffusion / migration-memory counter is surveyed by Tim Brinkhof, "Why are flood myths so common in stories from the ancient world?" Big Think (2023), which cites Anna Birgitta Rooth, "The Creation Myths of the North American Indians," Anthropos 52 (1957): 497–508 (detail-motifs shared with Eurasia, "a common origin"). Full weighing — the no-internal-clock point, the Babel-dispersion circularity, and the many-floods-not-one disconfirmation from Nunn & Reid's Australian corpus — on the argument page. ↩