Indicator C3 — Duplicate or Near-Duplicate Projects

AI-verified / Na-verify ng AI Data as of October 21, 2026

Duplicate or Near-Duplicate Projects

Very similar descriptions within ~100m or identical coordinates across contracts/years.

This is a statistical anomaly or indicator worth examining — not proof of wrongdoing, fraud, or corruption against any person.

Indicator: contracts 23DM0081 and 24DM0057 have near-identical descriptions about 440 m apart (funding years 2023, 2024; ₱74.25M, ₱96.50M). Worth checking whether they cover the same works. It is possible that the second project is a continuation or expansion of the first, or covers a nearby but distinct section of the river.

Public record entityConstruction of Flood Control Structure along Catanauan River, Catanauan, Quezon

LocationCATANAUAN (QUEZON), QUEZON, Region IV-AContract 24DM0057

Amount₱96,500,000.00 sumbong source

Only contractors and government agencies named in public procurement records are shown. Private individuals are not named.

Satellite before / after

Esri Wayback · ~0.31 mLocation approximate

Before capture: 2020-10-01 · Maxar

After capture: 2024-06-11 · Vantor

No post-completion imagery yet — the newest available capture predates the reported completion date.

Satellite comparison for public reference — not proof of completion or non-completion.

Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.

Imagery © Esri, Maxar, Earthstar Geographics, and the GIS User Community

Caveats & resolution

Esri World Imagery Wayback (~0.5–1 m); dates are archive release dates, not capture timestamps.
Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.
DPWH coordinates can be approximate; marker shows the imagery center (may be snapped to riverbank/coast).

Disclaimer

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How this was checked

publish · confidence 0.92

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The titles are near-identical and refer to the same river in the same municipality, with no distinguishing markers such as different phases, sections, or barangays. The only difference is 'Package A' in one title, but the other title does not specify any package or phase, which per guidance is a publish case (unlabelled twin). The projects are about 440 meters apart, which is within a plausible range for duplicate or overlapping works along a river. All necessary records and URLs are present.

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Project completion

Schedule fields from DPWH transparency portal records and the Sumbong sa Pangulo flood-control list — not inferred beyond those columns.

Reported complete (DPWH): 1Ongoing: 0Delayed: 0Status unknown: 0

Project	Prog.	Target end	Actual end	Days late	Status
Construction of Flood Control Structure along Catanauan River, Catanauan, Quezon24DM0057Flood control	100%	January 25, 2025	December 3, 2024	—	completedsumbong source

Start: February 14, 2024 · Source fetched October 21, 2026

Rule Definition

Title similarity + distance or shared coordinates within municipality.

Triggering Data & citations

Similar project description near another contract in the same municipality

{
  "contractId": "24DM0057",
  "fundingYear": 2024,
  "municipality": "CATANAUAN (QUEZON)",
  "distanceMeters": 439.74986256684,
  "titleSimilarity": 0.9593518518518518
}

Source documents

sumbong — https://raw.githubusercontent.com/rukku/sumbongsapangulo.ph-datasets/main/flood_control_projects.geojsonFetched October 21, 2026

Possible Innocent Explanations

Phased construction seasons
Upstream/downstream segments recorded separately