# Spatial Shiftment in the River discharge and related forecasted data by the European Flood Awareness System

**URL:** <https://forum.ecmwf.int/t/spatial-shiftment-in-the-river-discharge-and-related-forecasted-data-by-the-european-flood-awareness-system/15135>\
**Category:** Feedback and requirements\
**Created:** [7 July 2026 08:46 UTC](https://forum.ecmwf.int/t/spatial-shiftment-in-the-river-discharge-and-related-forecasted-data-by-the-european-flood-awareness-system/15135 "2026-07-07T08:46:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ersat\_Unal](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/e/9de0a6/32.png) [@Ersat\_Unal](https://forum.ecmwf.int/u/Ersat_Unal)\
**Post date:** [7 July 2026 08:46 UTC](https://forum.ecmwf.int/t/spatial-shiftment-in-the-river-discharge-and-related-forecasted-data-by-the-european-flood-awareness-system/15135/1 "2026-07-07T08:46:39Z")

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As part of an ongoing study on the impacts of climate change on water resources and flood forecasting in Türkiye, I have been analyzing discharge datasets obtained from EFAS (European Flood Awareness System) and GloFAS (Global Flood Awareness System). During the quality control process, a systematic spatial bias was identified in the data starting from August 7, 2019. Specifically, the grid cells exhibit a northward displacement of 10.08709° and an eastward displacement of 0.13794°. It is important to note that when datasets are acquired through automated loops, this georeferencing shift may not be immediately apparent, potentially compromising the integrity of downstream hydrological analyses.

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**Author:** ![Karen\_ORegan](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/k/8797f3/32.png) [@Karen\_ORegan](https://forum.ecmwf.int/u/Karen_ORegan)\
**Post date:** [13 July 2026 08:41 UTC](https://forum.ecmwf.int/t/spatial-shiftment-in-the-river-discharge-and-related-forecasted-data-by-the-european-flood-awareness-system/15135/2 "2026-07-13T08:41:32Z")

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@Ersat_Unal Thank you for bringing this to our attention.

The matter has been assigned to our analysts and is currently being investigated through the ticket that you raised in our [support portal](https://confluence.ecmwf.int/site/support).

They are actively working on it and will get back to you with an update in due course!

Kind regards,

Karen, CEMS Flood Support