Abstract
Fishways are hydraulic structures designed to dissipate the energy of flowing water in order to
decrease water velocities and increase water depths. The history of fishways is long, the first written
remarks date back to the 17th century. Fishway hydraulics, however, have been
intensively studied only starting since the 1980's. Fishways have been classified into three main
categories according to their hydraulic characteristics: pool-and-weir, vertical slot, and Denil
fishways. Fishways are hydraulically complex structures, and thus designing tools for different fishway
types have been developed. In this report, a new designing procedure has been established, and equations
for each main fishway type have been suggested. In addition, flow conditions below different fishway
types have been examined, and velocity distributions at weirs with V-shaped crests in both pool-and-weir
fishways and at a single weir have been compared in different discharges and drops. Fishway flows have
been compared with flows over single weirs.
| Identifer | oai:union.ndltd.org:oulo.fi/oai:oulu.fi:isbn951-42-5977-7 |
| Date | 09 May 2001 |
| Creators | Kamula, R. (Riitta) |
| Publisher | University of Oulu |
| Source Sets | University of Oulu |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis, info:eu-repo/semantics/publishedVersion |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess, © University of Oulu, 2001 |
| Relation | info:eu-repo/semantics/altIdentifier/pissn/0355-3213, info:eu-repo/semantics/altIdentifier/eissn/1796-2226 |
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