Project
term: |
1993 - 1996
|
Project:
|
• |
Rehabilitation of the right-bank
river Elbe dike in Prignitz rural district (Federal
State of Brandenburg) |
• |
Protection of approx. 20,000
people (e.g. the cities of Wittenberge and Lenzen),
some 20,000 hectares of cultivated land, and some 25,000
livestock. |
• |
The overall project forms
part of the nature preserve ”Brandenburgische Elbtalaue”
(Brandenburg river Elbe valley meadows).
|
Technical features and parameters: |
• |
The relevant dike section
has a length of 73.5 km (between river km 431 near the
river Havel mouth and river km 502 near Dörnitz
municipality) |
• |
The length of the rehabilitated
backwater retention dikes is 44.7 km. |
• |
The freeboard heightening
on the dike safety height of 1.0 m above the base flood
water level HQ100. |
• |
The stability of the dikes
for the base flood water level is jeopardised by through-flow
and underflow. |
• |
The demanding shaping of
the dike profile in the vicinity of very old, valuable
trees. |
• |
All required coordination
was sought with the nature preservation agency and the
administration of the natural preserve from the initial
design phase to the construction.
|
The
nominal profile of the right-bank river Elbe dike, which
was built by including the existing dike, has the following
parameters in the natural landscape: |
• |
Crest width 3.50 m |
• |
Slope gradient downstream
and upstream 1 : 3 |
• |
Downstream berm with a width
of 5.0 m including dike protection path |
