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 23NA0006 and 24NA0009 have near-identical descriptions about 485 m apart (funding years 2023, 2024; ₱96.50M, ₱67.32M). Worth checking whether they cover the same works. It is possible that the second project is a continuation or extension of the first, or covers an adjacent stretch of the river.

Public record entityConstruction of Guihao-an River Bank Protection along Barangay Rizal with Rechannelization, Buenavista, Agusan del Norte

LocationBUENAVISTA (AGUSAN DEL NORTE), AGUSAN DEL NORTE, Region XIIIContract 23NA0006

Amount₱96,499,998.20 sumbong source

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

Satellite before / after

Esri Wayback · ~0.5 mLocation approximate

Before capture: 2019-08-10 · Maxar

After capture: 2025-11-30 · Vantor

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 0.95

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The two project titles are near-identical, both refer to 'Construction of Guihao-an River Bank/Riverbank Protection along Barangay Rizal, Buenavista, Agusan del Norte', and are only 485 meters apart. The only differences in the titles are minor wording ('river bank' vs 'riverbank', and 'with rechannelization' in the first), with no phase, package, section, or distinct location markers. This fits the rule's publish criteria for possible duplicate or overlapping works. All necessary record details 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 Guihao-an River Bank Protection along Barangay Rizal with Rechannelization, Buenavista, Agusan del Norte23NA0006Flood control	100%	November 1, 2023	September 15, 2023	—	completedsumbong source

Start: February 16, 2023 · 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": "23NA0006",
  "coordinates": {
    "lat": 8.925049,
    "lon": 125.40269
  },
  "municipality": "BUENAVISTA (AGUSAN DEL NORTE)",
  "distanceMeters": 484.89220222426695,
  "titleSimilarity": 0.8940092165898618
}

Source documents

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