--- You wrote:
we are looking for high D/H ratios above 0 permil, preverently much more above this level. 
We expect such values mainly from plant water enrichment in leaves or better in fruits as lemons.
Or has someone measured high emricments in other natural waters as ponds or shrinking lakes.
Someone some record to report ?
--- end of quote ---

Hilmar,

Our group is working on isotopic enrichment in leaves. You may have already seen the following article. We have a more detailed model coming out soon.

Relative humidity recorded in tree rings; a study along a precipitation gradient in the Olympic Mountains, Washington, USA . 
Geochimica et Cosmochimica Acta, vol.69, no.4, pp.791-799, 15 Feb 2005  Shu,Feng,Gazis,Anderson,Faiia,Tang,Ettl

There are also reports of high dD values in precipitation (exceeding 0 permil) from 40N to 40S in the IAEA/GNIP database at http://isohis.iaea.org/. 
This database has some limited surface water values as well but I haven't looked into them in detail. 

Anthony Faiia
Dartmouth College
Hanover, NH, USA