N_PLAN_EAU_IFN_S_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_S_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 territory
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