The GEREM (Glass Eel Recruitment Estimation Model) model is an analytical tool developed to estimate recruitment at different spatial scales. In this report we show how the GEREM model has been applied to the SUDOE area to obtain an estimation of recruitment at three spatial scales: SUDOE scale, subarea/region scale and basin scale, and we present the first results at the different scales. The model itself is detailed in several scientific articles and reports (Bornarel, 2016; Drouineau et al., 2016; Bornarel et al., 2018) where the reader can find the equations and assumptions of the model.