Reference rivers for good agricultural and environmental conditions (GAEC) — Ille-et-Vilaine — Progressive map area

The reference watercourse usable in Ille-et-Vilaine for the application of the rules of good environmental conditions (GAEC) has evolved: it corresponds since 1 January 2018 to the inventory published on the State website in the department (provisions of Annex III to the Ministerial Order of 13 April 2018): http://www.ille-et-vilaine.gouv.fr/Politiques-publiques/Environnement-Risques-naturels-et-technologiques/L-eau/Cartographie-des-cours-d-eau-en-Ille-et-Vilaine.

The present layer is that of the reference rivers for good agricultural and environmental conditions (GAEC) in the territory known as the progressive map area, where the complete mapping of watercourses could not be implemented in accordance with the Government instruction of 3 June 2015.

The rivers retained under GAEC in this territory are those in full and dotted line on the scan at 1: 25,000 of the IGN (SCAN 25) 2014 vintage.

BCAE streams on the full mapping area are identical to the full inventory mapping streams (accessible here: https://geobretagne.fr/geonetwork/srv/fre/catalog.search#/metadata/cd2cf847-ec15-4eab-a833-4f6619f2b231)

伊勒-维莱讷省（Ille-et-Vilaine）用于实施良好农业与环境条件（Good Agricultural and Environmental Conditions，GAEC）规则的参考河道体系已更新：自2018年1月1日起，该体系对应本省政府官网发布的河道名录（依据2018年4月13日部长令附件三之规定），相关链接：http://www.ille-et-vilaine.gouv.fr/Politiques-publiques/Environnement-Risques-naturels-et-technologiques/L-eau/Cartographie-des-cours-d-eau-en-Ille-et-Vilaine。

本数据集图层对应"渐进式制图区域"内实施良好农业与环境条件（GAEC）所需的参考河道体系，该区域因无法依据2015年6月3日法国政府指令完成全流域河道测绘。

本区域内符合GAEC要求的保留河道，取自2014版法国国家地理研究院（Institut Géographique National，IGN）1:25000比例尺扫描图（SCAN 25）中的实线与虚线河道。

全测绘区域内的BCAE河道与完整名录测绘河道完全一致（访问链接：https://geobretagne.fr/geonetwork/srv/fre/catalog.search#/metadata/cd2cf847-ec15-4eab-a833-4f6619f2b231）