Detailed view for Au weir - HHP Au

NameAu weir - HHP Au
Concerned RiverIller
Typewater filled
Short Description

The Au weir is located on the Iller River in Germany.

It is a water-filled inflatable dam which is composed of two spans of 62.40 m and 15 m long, respectively.


Main characteristics
Water Head (m)0
Upstream height (m)0
Downstream height (m)0
Discharge (m/s)54 m/s
Total length (m)77.4 m
Number of spans & dimensions

2 spans:

- 1 span of 62.40 m length and 2.40 m height

- 1 span of 15 m legth and 4 m height

Weir height (m)2.4 - 4.0
Progress statuscompleted
Date of completion10/23/2015

Illerkraftwerk Au GmbH 


Allgäuer Überlandwerk GmbH (AÜW) 

Design group

IB Koch Bauplanung GmbH, 87437 Kempten, Germany


- Hydro-Construct GmbH, 4400 Steyr, Austria (rubber gate)
- Hubert Schmid, 87616 Marktoberdorf, Germany (civil works)
- Stellba Hydro GmbH & Co KG, 89524 Herbrechtingen, Germany (VLH E&M technology)

Cost estimation930,000 euros


PIANC References for this project

In progress


The water-filled inflatable rubber gate system is a replacement for the existing fixed weir. The weir has two spans: a 62.4 m wide and 2.40 m height span used for conveying water during high flow and a 15 m wide and 4 m height span used as a gravel sluice. Each rubber gate can be operated independently from the other. 

Documents to download
  • 122- PReview WG166 - Au weir.pdf - 122- PReview WG166 - Au weir.pdf