Dataset Direct Download Service (WFS): Departmental inventory of rivers in Finistère for the year 2011

L_INVENTAIRE_CE_DDTM_029_2011: Archive layer for 2011.
The current layer is L_INVENTAIRE_CE_DDTM_029 (unspecified year = current year)

28880 polylines representing the departmental inventory of the rivers of Finistère to July 2011, as annexed to Prefectural Decree 2011-1057 of 18/07/2011.

This inventory is described in particular on:
http://finistere.gouv.fr/Politiques-publiques/Environnement-risques-naturels-et-technologiques/Police-de-l-eau/Inventaire-departemental-des-cours-d-eau-du-Finistere

The inventory is a composite work consisting of additions, modification and removal of elements from the stream layer of the BD TOPO IGN (C), up to about 20 % of the 2011 line. Following a tripartite agreement IGN, Chamber of Agriculture of Finistère, DDTM of Finistère, BD TOPO incorporated a large part of these elements. Then, the TOPO BD and the departmental inventory evolved slightly separately, due to the parties’ difference in point of view: IGN on the one hand, DDTM/CA29 on the other, on what a river is in the geographical sense (IGN point of view) and within the meaning of the Water Act (departmental inventory point of view), and on attributes.
Thus, the sum of the river lengths of the TOPO BD is 9 869 km, compared with 9238 in the inventory, the differences being mainly due to these differences in definition: fictitious extension in estuaries and water bodies, nozzle or nozzle streams, groundwater or surface streams, etc.

Since the hydro theme of the TOPO BD is now open-data, the departmental inventory, which differs to less than 1 %, can now also be offered on GeoBretagne, which was not possible previously for licensing problems.

L_INVENTAIRE_CE_DDTM_029_2011：2011年归档图层。当前默认图层为L_INVENTAIRE_CE_DDTM_029（未指定年份时将默认采用当前年份）。
本数据集包含28880条多段线，代表截至2011年7月的菲尼斯泰尔省河道部门清单，该清单作为2011年7月18日第2011-1057号省长令的附件发布。
该清单的详细信息可参见：http://finistere.gouv.fr/Politiques-publiques/Environnement-risques-naturels-et-technologiques/Police-de-l-eau/Inventaire-departemental-des-cours-d-eau-du-Finistere
本清单是对法国国家地理信息局（IGN）BD TOPO（C）水系图层进行新增、修改与移除操作后形成的整合成果，覆盖约20%的2011版水系要素。根据法国国家地理信息局、菲尼斯泰尔省农业商会与菲尼斯泰尔省领土与海洋局（DDTM）达成的三方协议，BD TOPO纳入了其中绝大多数要素。此后，BD TOPO与该部门清单因双方视角差异出现了一定程度的独立演化：一方为法国国家地理信息局，另一方为菲尼斯泰尔省DDTM/菲尼斯泰尔省农业商会（CA29），二者在地理意义上的河道定义（法国国家地理信息局视角）与《水法》框架下的河道定义（部门清单视角）以及属性字段上均存在分歧。
因此，BD TOPO的河道总长度为9869千米，而本部门清单的河道总长度为9238千米，二者差异主要源于上述定义分歧：例如河口与水体的虚拟延伸段、分流河道或支流、地下河与地表河等。
由于BD TOPO的水系主题现已开放数据，且本部门清单与BD TOPO的差异不足1%，因此该清单如今也可在GeoBretagne平台发布——此前因授权问题无法实现这一点。