Townsville Council's Digital Archive Has a Duplicate Image Problem — and the Numbers Tell a Damning StoryUpdated

More than 34,000 duplicate image files are sitting inside Townsville City Council's digital asset management system, according to an internal audit completed in May 2026 — redundant records that are costing the ratepayer-funded organisation real money in cloud storage fees and, more critically, gumming up planning workflows at a time when the city is chasing major infrastructure investment.

The issue has come into focus now because Council is midway through digitising its pre-2000 engineering and flood-mapping records as part of a post-2019 flood resilience commitment. That $2.1 million digitisation contract, awarded to a Townsville-based document services firm and due for completion by December 2026, has dramatically accelerated the volume of image files entering the system — and exposed a legacy duplication problem that predates the project by years.

What the Numbers Actually Show

The audit, which reviewed assets held across Council's geographic information system and its broader document repository, found that roughly 18 per cent of all stored image files were exact or near-exact duplicates. Storage costs for the digital asset system run to approximately $480,000 per year. If duplication rates hold at 18 per cent, the Council is effectively paying close to $86,000 annually to store files it already has.

The problem is not evenly distributed. The audit identified that flood-mapping imagery relating to the Ross River corridor — stretching from the Ross River Dam intake zone down through Idalia and Mundingburra — accounts for a disproportionate share of duplicates. Aerial survey images captured during the January 2019 flood event were uploaded multiple times by different departments using different file-naming conventions, creating clusters of identical records that the system failed to flag automatically.

Separate records held by the Townsville Water and Waste division, which manages dam operations and catchment monitoring, also contain duplicated drone imagery from post-flood inspections. That division stores its records independently of the main Council repository, meaning the same images sometimes exist in two separate systems simultaneously.

The 1 William Street Council chambers administration team has been aware of the storage cost issue since at least late 2024, when a preliminary review flagged file bloat in the GIS layer. The May 2026 audit was the first formal quantification of the problem's scope.

Why Fixing It Is Harder Than It Sounds

Deleting duplicate files is not straightforward when those files are attached to legal or planning records. Council's records management policy, last updated in March 2023, requires that image assets linked to development applications or infrastructure assessments be retained for a minimum of seven years after a decision is made. Simply running a deduplication script risks stripping legitimate evidentiary records from files that are still legally live.

The Queensland State Archives Act 2001 adds another layer of complexity. Any disposal of public records — including duplicates — requires either a records disposal authority or a formal retention and disposal schedule approved by Queensland State Archives in Brisbane. Council staff will need to work through that process before any bulk deletion can begin, a bureaucratic step that typically takes between three and six months to complete.

The James Cook University-partnered Smart Cities Centre, based on the Douglas campus, has been advising local governments across North Queensland on digital records governance. The centre has previously published guidance recommending that councils implement automated hash-matching tools at the point of file ingestion — a measure that prevents duplicates from entering the system in the first place, rather than requiring costly clean-up after the fact.

Council's information technology unit has earmarked a tool evaluation phase for the third quarter of 2026, with a procurement decision expected by October. Any new deduplication system would not be operational before the current digitisation contract concludes in December, meaning the 2019 flood-mapping project is likely to add further duplicates before any fix is in place. The practical upshot for residents is limited short-term disruption, but ratepayers should expect the storage cost question to appear in Council's 2027-28 budget deliberations — and to be worth watching when those documents are tabled.