Discharge Not from the Bottom - Motivations and Consequences of Alternative Discharge Depths
File version
Author(s)
Sudbrack, Ralf
Neumann, Vincenz
Frassl, Marieke
Willmitzer, Hartmut
Moeller, Markus
Scharf, Wilfried
Weber, Michael
Boehrer, Bertram
Rinke, Karsten
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
Size
File type(s)
Location
License
Abstract
In der Regel wird der Unterlauf von Talsperren in Deutschland aus dem Grundablass gespeist. Es gibt jedoch Anlässe, die Speisung des Unterlaufes nicht über den Grundablass zu realisieren, sondern dafür Wasser aus höheren Bereichen des Wasserkörpers zu entnehmen. In diesem Beitrag werden Motive, Modellierungsergebnisse sowie zu erwartende Folgen vorgestellt und diskutiert. Die vorgestellten Beispiele zeigen, dass die Errichtung epilimnischer Abgabemöglichkeiten eine Einzelfallentscheidung unter Abwägung der zu ermittelnden Kosten-Nutzen-Faktoren ist. In Germany, the downstream release of reservoirs is usually fed from the bottom outlet of the dam. Recently, however, withdrawal from the upper parts of the water body has been considered for feeding the downstream river. In this paper, motivation, modelling results and potential consequences of epi- and metalimnetic water releases are presented and discussed. Key motivations were (A) retention of the hypolimnion as the preferred source for raw water for drinking water production, (B) nature conservation and requirements of the EU Water Framework Directive for downstream waters as well as (C) limitation of cyanobacterial growth in the reservoir. The examples demonstrate that cost-benefit considerations for the implementation of epi- and metalimnetic outtakes yield different conclusions depending on the individual reservoir.
Journal Title
Wasserwirtschaft
Conference Title
Book Title
Edition
Volume
106
Issue
6
Thesis Type
Degree Program
School
Publisher link
DOI
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject
Water treatment processes
Science & Technology
Physical Sciences
Water Resources
Management
Persistent link to this record
Citation
Schultze, M; Sudbrack, R; Neumann, V; Frassl, M; Willmitzer, H; Moeller, M; Scharf, W; Weber, M; Boehrer, B; Rinke, K, Discharge Not from the Bottom - Motivations and Consequences of Alternative Discharge Depths, Wasserwirtschaft, 2016, 106 (6), pp. 82-85