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Fishladder research results :

Function check of a  brush fishway in the river Oker in Braunschweig Rueningen/lower saxony 
Functions check of a vertical slot fishway in the river Oker in Hedwigsburg/lower saxony
Functions check of a maeander fishway in the river  Oker in Rothemuehle/lower saxony
Functions check of a riverbed channel in the river  Oker in Meinersen/lower saxony 

Hydropower stations :

Survey about the damages on fishes during the passage of the Main powerstation Dettelbach

Guidline about the compensation out of  hydropower electricity of the federal environment agency shows the actual situation about this topic in germany

Historical documents :

Borne, Max von dem:
The fishery-rapport about the german empire, austria-hungary, switzerland and luxembourg from 1881.

Fritsch, Anton:
The Elbe salmon - a biological-anatomic study from 1893.

Monitorings:

Downstream mirgation behaviour  of fishes in the area of  hydropower stations in the river OKER
- final report
: atlantic salmon and silver eel downstream migration 2004 - not yet published

In the publication of the LAVES-department inlandfisheries-ichtyological service
t: "Abwanderung von Fischen im Bereich von Wasserkraftanlagen",(downstream migration of fishes in the area of hydropowerstations)

(2006, price: 7,50 EURO (52 pages)

are the collected results of the surveys about the function of bypass tubes at 3 hydropowerstations and may be ordered at the LAVES under
http://www.laves.niedersachsen.de/master/C9423111_N1223_L20_D0_I826.html