Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches
Man-made, instream structures can pose barriers to fish movement. Fish move about river systems to reach habitats associated with various stages of their life histories. If access to required habitat is blocked, it can cause detrimental effects to fish populations. Removing barriers to fish movement...
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Montana State University - Bozeman, College of Engineering
2019
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ftmontanastateu:oai:scholarworks.montana.edu:1/15559 2023-05-15T14:31:23+02:00 Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches Platt, Nolan Chalmers Chairperson, Graduate Committee: Kathryn Plymesser Matt Blank, Kathryn Plymesser, Kevin Kappenman and Joel Cahoon were co-authors of the article, 'Modeling upstream arctic grayling passage through Denil fishways in the Big Hole Valley, Montana' submitted to the journal 'The journal of ecohydraulics' which is contained within this thesis. Matt Blank, Kathryn Plymesser, Kevin Kappenman and Joel Cahoon were co-authors of the article, 'Hydraulic design of a Denil fishway at pin-and-plank irrigation diversions: a technical report' submitted to the journal 'A technical report' which is contained within this thesis. Big Hole River Valley 2019 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/15559 en eng Montana State University - Bozeman, College of Engineering https://scholarworks.montana.edu/xmlui/handle/1/15559 Copyright 2019 by Nolan Chalmers Platt Fishways Hydraulics Models and modelmaking Arctic grayling Irrigation Thesis 2019 ftmontanastateu 2022-06-06T07:26:15Z Man-made, instream structures can pose barriers to fish movement. Fish move about river systems to reach habitats associated with various stages of their life histories. If access to required habitat is blocked, it can cause detrimental effects to fish populations. Removing barriers to fish movement is often socio-economically infeasible so fishways are used to promote fish passage around barriers. Denil fishways consist of a chute for water to flow through and baffles to slow water velocities; they are a relatively cheap solution for promoting upstream fish passage over low-head barriers. The Big Hole River basin is home to the last fluvial population of Arctic Grayling in the continental United States. Per an agreement between landowners and several government organizations, Denil fishways were installed at irrigation diversions in the Big Hole Valley to provide fish volitional routes to navigate irrigation diversions. Eleven Denil fishways at irrigation diversions were evaluated for their effectiveness at passing grayling by using hydraulic modeling techniques coupled with biologic data. Hydrologic data was applied to hydraulic models to estimate water surface elevations about the Denils over time. A passage index was developed which inferred passage efficiency of the fishway based on depths at the upstream and downstream ends and assigning a 'passage condition.' Passage windows were developed which describe times when the fishways functioned to 'allow', 'limit', or 'prevent' upstream passage. Across all sites fishways were predicted to 'allow' passage 6.4% of the time, 'limit' passage 17.2% of the time, and 'prevent' passage 10.3% of the time. The modelled depth combination at fishways was 'out of range' of the passage index 66.1% of the time. A hydraulic design process was proposed with the goal of designing Denil fishways at pin-and-plank irrigation diversions to promote upstream passage at low flows. Design criteria were established, explained, and presented. One-dimensional hydraulic modeling techniques ... Thesis Arctic grayling Arctic Montana State University (MSU): ScholarWorks Arctic Low Head ENVELOPE(-58.133,-58.133,-62.150,-62.150) |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
English |
topic |
Fishways Hydraulics Models and modelmaking Arctic grayling Irrigation |
spellingShingle |
Fishways Hydraulics Models and modelmaking Arctic grayling Irrigation Platt, Nolan Chalmers Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches |
topic_facet |
Fishways Hydraulics Models and modelmaking Arctic grayling Irrigation |
description |
Man-made, instream structures can pose barriers to fish movement. Fish move about river systems to reach habitats associated with various stages of their life histories. If access to required habitat is blocked, it can cause detrimental effects to fish populations. Removing barriers to fish movement is often socio-economically infeasible so fishways are used to promote fish passage around barriers. Denil fishways consist of a chute for water to flow through and baffles to slow water velocities; they are a relatively cheap solution for promoting upstream fish passage over low-head barriers. The Big Hole River basin is home to the last fluvial population of Arctic Grayling in the continental United States. Per an agreement between landowners and several government organizations, Denil fishways were installed at irrigation diversions in the Big Hole Valley to provide fish volitional routes to navigate irrigation diversions. Eleven Denil fishways at irrigation diversions were evaluated for their effectiveness at passing grayling by using hydraulic modeling techniques coupled with biologic data. Hydrologic data was applied to hydraulic models to estimate water surface elevations about the Denils over time. A passage index was developed which inferred passage efficiency of the fishway based on depths at the upstream and downstream ends and assigning a 'passage condition.' Passage windows were developed which describe times when the fishways functioned to 'allow', 'limit', or 'prevent' upstream passage. Across all sites fishways were predicted to 'allow' passage 6.4% of the time, 'limit' passage 17.2% of the time, and 'prevent' passage 10.3% of the time. The modelled depth combination at fishways was 'out of range' of the passage index 66.1% of the time. A hydraulic design process was proposed with the goal of designing Denil fishways at pin-and-plank irrigation diversions to promote upstream passage at low flows. Design criteria were established, explained, and presented. One-dimensional hydraulic modeling techniques ... |
author2 |
Chairperson, Graduate Committee: Kathryn Plymesser Matt Blank, Kathryn Plymesser, Kevin Kappenman and Joel Cahoon were co-authors of the article, 'Modeling upstream arctic grayling passage through Denil fishways in the Big Hole Valley, Montana' submitted to the journal 'The journal of ecohydraulics' which is contained within this thesis. Matt Blank, Kathryn Plymesser, Kevin Kappenman and Joel Cahoon were co-authors of the article, 'Hydraulic design of a Denil fishway at pin-and-plank irrigation diversions: a technical report' submitted to the journal 'A technical report' which is contained within this thesis. |
format |
Thesis |
author |
Platt, Nolan Chalmers |
author_facet |
Platt, Nolan Chalmers |
author_sort |
Platt, Nolan Chalmers |
title |
Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches |
title_short |
Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches |
title_full |
Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches |
title_fullStr |
Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches |
title_full_unstemmed |
Designing and assessing the effectiveness of Denil fishways using hydraulic modeling-based approaches |
title_sort |
designing and assessing the effectiveness of denil fishways using hydraulic modeling-based approaches |
publisher |
Montana State University - Bozeman, College of Engineering |
publishDate |
2019 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/15559 |
op_coverage |
Big Hole River Valley |
long_lat |
ENVELOPE(-58.133,-58.133,-62.150,-62.150) |
geographic |
Arctic Low Head |
geographic_facet |
Arctic Low Head |
genre |
Arctic grayling Arctic |
genre_facet |
Arctic grayling Arctic |
op_relation |
https://scholarworks.montana.edu/xmlui/handle/1/15559 |
op_rights |
Copyright 2019 by Nolan Chalmers Platt |
_version_ |
1766305034365042688 |