Simple download service (Atom) of the dataset: Point location of water bodies (surface between 1 000 m² and 1 ha) in Corrèze

N_PLAN_EAU_IFN_P_019 The DIREN Limousin has entrusted to the National Forestry Institute (IFN) map inventory of Limousin ponds from orthophotoplans. The photographs date from 1999 for the Corrèze and 2000 for the Up and down and the Creuse. In view of the resolution of the photographs, only ponds of which the area is more than 1 000 m² have been surveyed. Some summary data on this work as well as the comparison with the SCAN25 and the BD CARTHAGE® can be found in the document (http://diren.dev.eservices.fr/donnees/eau/etangs/rendu.asp?page=etangs_presentation) This inventory is only partial since it concerns only the ponds of more than 1 000 m² and which are visible on the photographs (water to the time of shooting). Finally, it should be mentioned that bodies of water bordering two departments have been recorded in each of the departments and for the area concerned on the department (in particular Vassivière) which breaks into 1 body of water in Haute-Vienne of 448 ha and two bodies of water in Creuse 153 Ha and 331 Ha) or Lavaud or Bort les Organs that are counted only for the area included in the region. This consequent work of scanning on infrared boards colors leads to a fairly complete inventory of water bodies of more than 1 000 m² (which corresponds to the reporting threshold) administrative). The reliability of this inventory is very good both in terms of the completeness of the base and of the layout of the contours and therefore of the surfaces estimated. This leads to a very interesting tool for bets that can now compare their administrative basis of declared ponds with this inventory (undeclared ponds, comparison of areas) declared,...). But it is also an interesting basis for characterisation of pelvis heads since we can quickly know the number of ponds and the amount of water they represent in a given territoryN_PLAN_EAU_IFN_P_019 利穆赞大区环境与地域规划局（DIREN）委托法国国家林业研究所（IFN），基于正射航空影像（orthophotoplans）完成利穆赞大区池塘的测绘普查工作。 此次影像的拍摄时间为1999年（科雷兹省（Corrèze））与2000年（上维埃纳省（Haute-Vienne）及克勒兹省（Creuse））。 受影像分辨率限制，本次普查仅统计面积大于1000平方米的池塘。 本次工作的部分汇总数据，以及与SCAN25、BD CARTHAGE®的对比结果，可查阅该文档：http://diren.dev.eservices.fr/donnees/eau/etangs/rendu.asp?page=etangs_presentation 本次普查仅为部分覆盖：仅统计了影像拍摄时可见、且面积大于1000平方米的池塘。 需特别说明的是，跨两省交界的水体将分别在两个省份的数据库中登记，且仅将其归属该省的水域面积计入统计。例如瓦西维耶尔湖（Vassivière）：在上维埃纳省境内的水域面积为448公顷，在克勒兹省境内分为两处，分别为153公顷与331公顷；又如拉沃湖（Lavaud）与博尔莱索尔格湖（Bort les Organs），仅将其位于利穆赞大区境内的水域面积纳入本次统计。 本次基于彩色红外航片的扫描工作，已较为全面地完成了面积大于1000平方米（对应行政上报阈值）的水体普查。 本次普查的可靠性极佳：无论是数据库的完整性、水体轮廓的测绘精度，还是面积估算的准确性均表现优异。 该普查成果可为各行政单位提供极具价值的参考工具，使其可将官方申报的池塘台账与本次普查结果进行比对（如核查未申报池塘、比对申报面积等）。 同时，该普查成果也可为水体流域特征分析提供坚实基础，研究人员可快速获取任意给定区域内的池塘数量及总水面面积。