Simple download service (Atom) of the dataset: Departmental inventory of rivers in Finistère for the year 2015

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Dataset information

Country of origin
Updated
2021.09.10 00:00
Created
Available languages
French
Keywords
Quality scoring

Dataset description

L_INVENTAIRE_CE_DDTM_029_2015: Archive layer for 2015. The current layer is L_INVENTAIRE_CE_DDTM_029 (unspecified year = current year) 29477 polylines representing the departmental inventory of rivers in Finistère to December 2015, as annexed to Prefectural Decree 2011-1057 of 18/07/2011, updated. 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 9422 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.
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