Unmapped Dataworks

Status · Changes · Data corrections

Records we put right

When a record we publish is wrong, we correct it in a new release and say so here: which record, what changed, why, and the release it went out in. Newest first.

Corrections

  1. Dams from space

    Vergelegen Dam

    Corrected 13 November 2026, 18:00, in the release of 11 November 2026

    Why
    Measured the wrong dam. Vergelegen Dam (DWS station B8R004, on a tributary of the Politsi River, Limpopo) was matched by name to a different OpenStreetMap dam called Vergelegen, 116 km away, so its water area, pictures and history from space were of that other dam until 13 Nov 2026. Checked against DWS's own station catalogue. The record now measures the dam at DWS's station position (OpenStreetMap way 1237510474, about 6 ha; Digital Earth Africa Waterbodies overlap 85%): Sentinel-2 months from 2017 and every clear Landsat look since 1984, measured again. Release 10 November 2026.5 and earlier still hold the other dam's figures.
    outline.osm
    was w431983493, now w1237510474
    outline.km2
    was 0.362, now 0.059
    latest.pct of outline
    was 80.4, now 50.3
    Record
    B8R004

  2. Dams from space

    Tierkloof Dam

    Corrected 13 November 2026, 18:00, in the release of 11 November 2026

    Why
    Measured the wrong dam. Tierkloof Dam (DWS station J2R008, on a tributary of the Seweweekspoort River, Western Cape) was matched by name to a different OpenStreetMap dam called Tierkloof, 70 km away, so its water area, pictures and history from space were of that other dam until 13 Nov 2026. Checked against DWS's own station catalogue. Neither OpenStreetMap nor Digital Earth Africa Waterbodies has an outline of the dam at DWS's station position (about 1 ha at full supply), so the record now has no figures from space and says why. Release 10 November 2026.5 and earlier still hold the other dam's figures.
    outline.osm
    was w778523712, now nothing
    latest.pct of outline
    was 56.7, now nothing
    Record
    J2R008

  3. Bargaining-council minimum wages

    Security Officer, Grades C, D and E, Area 3 (March 2024 to February 2025)

    Corrected 12 November 2026, 15:20, in the release of 12 November 2026

    Why
    Captured wrongly. Government Gazette No. 50065, page 43 (NBCPSS, Table 2, Area 3, 1 March 2024 to 28 February 2025) prints R5 865.00 a month for Security Officer Grades C, D and E; we had released R5 855.00, the Grade B figure on the row above. The second reading of scanned pages found it and the page image confirms it. The gazette's own hourly figure on that row (R28.1490) works out to R5 855.00, so the record now says the page's figures disagree. Release 10 November 2026 still shows the old figure.
    Amount
    was R5,855 a month, now R5,865 a month
    Also noted
    read by eye from a scan; the Gazette’s hourly and monthly figures disagree
    Record
    nbcpss-4302-y2-a3-security-officer-grades-c-d-and-e

Corrections to News stories are printed on the story itself, dated, and listed on Story corrections. Every release, corrected or not, is on the change log.

Unmapped Dataworks