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Climate Evaluation

Same commitment, later deadline.

Timeline slipConfidence: Very likely

Five reservoirs which support a flood-control capacity of 28.7 billion cubic meters are included in the joint operation on the upper and middle reaches of the Yangtze River, accounting for 70% of the total capacity that the operation could deliver

Three cascade complexes (TGP, Xiangjiaba and Xiluodu) are involved in the joint operation, retaining approximately 15 billion cubic meters of floodwater during the flood season

The reported scope of the flood control operation was reduced from five reservoirs holding 28.7 billion cubic meters of water to just three complexes retaining approximately 15 billion cubic meters.

2017

"Five reservoirs which support a flood-control capacity of 28.7 billion cubic meters are included in the joint operation on the upper and middle reaches of the Yangtze River, accounting for 70% of the total capacity that the operation could deliver"

2018· candidate

"Three cascade complexes (TGP, Xiangjiaba and Xiluodu) are involved in the joint operation, retaining approximately 15 billion cubic meters of floodwater during the flood season"

2017

2018

Mutation ReasoningThe new claim focuses narrowly on the floodwater retention volume (~15 billion m³) achieved by three specific cascade complexes during joint operation, matching the 2018 source evidence verbatim. However, it omits reference to the broader historical context: five reservoirs collectively providing 28.7 billion m³ of flood-control capacity — representing 70% of the system’s total deliverable capacity. This omission shifts emphasis from systemic capacity and institutional coordination (five-reservoir framework) to a narrower, decontextualized achievement of three dams. While not contradictory (the 15 billion m³ figure is consistent and likely a subset), the selective framing drifts away from the comprehensive operational architecture previously emphasized, reducing conceptual scope without denying prior claims.

Intelligence Provenance Ledger

PACIA Job ID:c0e4debd-acc5-4d69-90fa-41b8617ce167Target Entity:China Three Gorges Corporation (CTG)Base Anchor:fuseki:entity:ctgCandidate Hash:urn:uuid:c0e4debd-acc5-4d69-90fa-41b8617ce167Retrieval Date:2026-07-01 (Automated pipeline)

This record maps to the agent consensus transcript and scatter-gather execution logs. Review tracing methodology.