R05-C013 — Provenance-of-correction record (PROTOCOL v1.4 rules 10 & 13)
Claim: R05-C013 (signed v1.0, 2026-08-28) · Source: S-008, Bauer et al. 2015, PLOS ONE 10(3):e0120016, DOI 10.1371/journal.pone.0120016 Status: CONFIRMED quantitative calibration error · independently verified 2026-09-06 · correction applied 2026-09-06
| Field | Record |
|---|---|
| Original value | “diversions could reach up to ~23% of seven-day low flow in studied watersheds” |
| Proposed correction (verifier: Claude, during R04 verification, 2026-09-06) | 2–23% in the least-impacted watershed (Upper Redwood Creek); 34–165% (Redwood Creek South) and 36–173% (Salmon Creek); >100% of a near-zero minimum in Outlet Creek |
| Basis (quoted) | Abstract: “…an estimated flow reduction of up to 23% of the annual seven-day low flow in the least impacted of the study watersheds. Estimates from the other study watersheds indicate that water demand for marijuana cultivation exceeds streamflow during the low-flow period.” Results: “In Upper Redwood Creek… 2–23% of the annual seven-day low flow… Redwood Creek South… 34–165%… Salmon Creek… 36–173%… In Outlet Creek, estimated demand was 17% of the maximum annual seven-day low flow… marijuana water demand is greater than 100% of the minimum annual seven-day low flow, but we cannot determine by how much.” |
| Second check (independent model) | ChatGPT, 2026-09-06. Retrieved the paper independently (PMC4364984; PubMed 25785849); confirmed Table 4 and Results values; verdict CONFIRMED — PATCH AUTHORIZED; supplied the adopted wording: “In Bauer et al.’s four northwestern California study watersheds, estimated cannabis water demand ranged from 2–23% of annual seven-day low flow in the least-impacted watershed, but reached 34–165% and 36–173% in two others; in Outlet Creek, demand exceeded 100% of the minimum seven-day low flow in years when measured flow approached zero.” |
| Applied | R05 ledger C013 (claim text + addendum); R05 synthesis (sentence corrected, addendum); SOURCE_LIBRARY S-008 caution updated from “pending” to “applied”; AUDIT_LOG R05 row and history |
| Root-cause tags | scope, unsupported-extrapolation (a minimum-case bound read as the overall bound); introduced in the R05 pilot cycle under PROTOCOL v1.2, before the two-check rule |
| Downstream | R04-C017 carries the corrected range and cross-references this record; R05 content-extraction items quoting “23%” must be revised before reuse (flagged in R05 row of AUDIT_LOG) |