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Ecologically justified regulatory provisions for riverine hydroelectric power plants and minimum instream flow requirements in diverted streams; Oekologisch begruendete, dynamische Mindestwasserregelungen bei Ausleitungskraftwerken

Abstract

The study was intended to develop a model versatile enough to permit quantification of various water demand scenarios in connection with operation of riverine hydroelectric power plants. Specific emphasis was to be placed on defining the minimum instream flow to be maintained in river segments because of the elementary significance to flowing water biocinoses. Based on fictitious minimum water requirements, various scenarious were simulated for flow regimes depending on power plant operation, so as to establish a system for comparative analysis and evaluation of resulting economic effects on power plant efficiency on the one hand, and the ecologic effects on the aquatic habitat. The information derived was to serve as a basis for decision-making for regulatory purposes. For this study, the temporal and spatial variability of the flow regime at the river bed in a river segment was examined for the first time. Based on this information, complemented by information obtained from habitat simulations, a method was derived for determination of ecologic requirements and their incorporation into regulatory water management provisions. The field measurements were carried out with the FST hemisphere as a proven and most efficient and reliable method of assessing flow regimes at river beds. Evaluation of the  More>>
Authors:
Publication Date:
Dec 31, 1997
Product Type:
Thesis/Dissertation
Report Number:
ETDE-DE-703
Reference Number:
SCA: 130700; PA: DE-98:0GD688; EDB-98:092628; SN: 98002001555
Resource Relation:
Other Information: TH: Diss. (Dr.-Ing.); PBD: 1997; Related Information: Universitaet Stuttgart, Institut fuer Wasserbau. Mitteilungen, v. 90
Subject:
13 HYDRO ENERGY; HYDROELECTRIC POWER PLANTS; WATER REQUIREMENTS; OUTLET STRUCTURES; RIVERS; HYDRAULICS; ECOLOGY; FLOW RATE; MINIMIZATION; ENERGY LOSSES; MATHEMATICAL MODELS; FLOWSHEETS; VERIFICATION; C CODES; WATER RIGHTS
OSTI ID:
643239
Research Organizations:
Stuttgart Univ. (Germany). Inst. fuer Wasserbau; Stuttgart Univ. (Germany). Fakultaet 2 - Bauingenieur- und Vermessungswesen
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: ISSN 0343-1150; Other: ON: DE98776173; ISBN 3-921694-90-6; TRN: DE98GD688
Availability:
OSTI as DE98776173
Submitting Site:
DE
Size:
182 p.
Announcement Date:

Citation Formats

Jorde, K. Ecologically justified regulatory provisions for riverine hydroelectric power plants and minimum instream flow requirements in diverted streams; Oekologisch begruendete, dynamische Mindestwasserregelungen bei Ausleitungskraftwerken. Germany: N. p., 1997. Web.
Jorde, K. Ecologically justified regulatory provisions for riverine hydroelectric power plants and minimum instream flow requirements in diverted streams; Oekologisch begruendete, dynamische Mindestwasserregelungen bei Ausleitungskraftwerken. Germany.
Jorde, K. 1997. "Ecologically justified regulatory provisions for riverine hydroelectric power plants and minimum instream flow requirements in diverted streams; Oekologisch begruendete, dynamische Mindestwasserregelungen bei Ausleitungskraftwerken." Germany.
@misc{etde_643239,
title = {Ecologically justified regulatory provisions for riverine hydroelectric power plants and minimum instream flow requirements in diverted streams; Oekologisch begruendete, dynamische Mindestwasserregelungen bei Ausleitungskraftwerken}
author = {Jorde, K}
abstractNote = {The study was intended to develop a model versatile enough to permit quantification of various water demand scenarios in connection with operation of riverine hydroelectric power plants. Specific emphasis was to be placed on defining the minimum instream flow to be maintained in river segments because of the elementary significance to flowing water biocinoses. Based on fictitious minimum water requirements, various scenarious were simulated for flow regimes depending on power plant operation, so as to establish a system for comparative analysis and evaluation of resulting economic effects on power plant efficiency on the one hand, and the ecologic effects on the aquatic habitat. The information derived was to serve as a basis for decision-making for regulatory purposes. For this study, the temporal and spatial variability of the flow regime at the river bed in a river segment was examined for the first time. Based on this information, complemented by information obtained from habitat simulations, a method was derived for determination of ecologic requirements and their incorporation into regulatory water management provisions. The field measurements were carried out with the FST hemisphere as a proven and most efficient and reliable method of assessing flow regimes at river beds. Evaluation of the measured instream flow data characterising three morphologically different segments of diverted rivers was done with the CASIMIR computer code. The ASS models derived were used for comparative assessment of existing regulatory provisions and recommended amendments determining required minimum instream flow in diverted rivers. The requirements were defined taking as a basis data obtained for three different years. (orig./CB) [Deutsch] Ziel der Arbeit war die Entwicklung eines Modellverfahrens, das flexibel die Quantifizierung unterschiedlicher Nutzansprueche an Laufwasserkraftanlagen ermoeglicht. Insbesondere der Erhalt einer gewissen Dynamik, die fuer Fliessgewaesserbiozoenosen elementare Bedeutung hat, wurde dabei angestrebt. Unter fiktiven Mindestwasservorgaben sollte durch die modellhafte Gegenueberstellung oekologischer Folgeeffekte mit den entsprechenden wirtschaftlichen Auswirkungen fuer die Kraftwerke ein Instrumentarium geschaffen werden, das als sinnvolle, sowohl oekologisch als auch oekonomisch zielgerichtete Entscheidungshilfe bei der Bemessung und Optimierung zukuenftiger Mindestwasserauflagen dienen kann. In der Arbeit wurde erstmals die zeitliche und raeumliche Variabilitaet des sohlnahen Stroemungsmusters in einem Flussabschnitt untersucht und daraus, ergaenzt durch Habitatsimulationen, ein Verfahren zur Ermittlung oekologisch begruendeter, dynamischer Mindestwasserregelungen fuer Ausleitungsstrecken abgeleitet. FST-Halbkugel-Messungen erwiesen sich dabei als gut geeignet. Mit FST-Halbkugeln lassen sich die Sohlschubspannungen in natuerlichen Gewaessern weitaus zuverlaessiger und effektiver erfassen, als beispielsweise mit Fluegelmessungen. Mit Hilfe von CASIMIR wurden FST-Halbkugel-Untersuchungen dreier morphologisch unterschiedlicher Versuchsstrecken ausgewertet. An den daraus abgeleiteten ASS-Modellen wurden verschiedene Mindestwasserregelungen einschliesslich des derzeit bestehenden Zustandes verglichen. Drei unterschiedliche Jahre wurden dabei zugrunde gelegt. (orig./SR)}
place = {Germany}
year = {1997}
month = {Dec}
}