Gregory Morris - Academia.edu (original) (raw)
Papers by Gregory Morris
Water resources engineering, 1995
Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Kn... more Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Knowledge & Learning: Books & Journals; CE Body of Knowledge; Certification; Codes & Standards; Conferences; Continuing ...
This work on reservoir sedimentation management and control, emphasizes practice rather than theo... more This work on reservoir sedimentation management and control, emphasizes practice rather than theory, defines the nature and severity of sedimentation, thoroughly reviews relevant physical processes, describes techniques used to combat sedimentation and presents detailed ...
Many techniques are available to actively manage reservoir sedimentation, and an equally importan... more Many techniques are available to actively manage reservoir sedimentation, and an equally important suite of adaptive strategies are available for managing the impacts of sedimentation without manipulating the sediment. Successful reservoir management to combat the effects of sedimentation may employ a combination of active plus adaptive strategies. This paper describes both active and adaptive strategies to manage reservoir sedimentation, and may be useful as a checklist of options to consider in addressing a sedimentation problem. Widespread application of both active and adaptive strategies will be required to successfully address the growing sedimentation problem worldwide.
… , Modeling, and Practice, 2008
Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Kn... more Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Knowledge & Learning: Books & Journals; CE Body of Knowledge; Certification; Codes & Standards; Conferences; Continuing ...
Extending the Life of Reservoirs: Sustainable Sediment Management for Dams and Run-of-River Hydropower, 2016
Reservoir silting is one of the principal problems affecting the performance of dams in Algeria f... more Reservoir silting is one of the principal problems affecting the performance of dams in Algeria from the standpoint of reservoir capacity for storage. Foum El Kherza Reservoir (also known as Foum El Gherza), near Biskra Town, Algeria, is subject to dredging operations with the intent of recovering 70% of its initial storage capacity of 47 hm3 (million cubic metres). The forecasting of sediment volume trapped in the reservoir is essential to plan the future use of this resource and to sustain irrigation for the palm groves characteristic of the region. However, there are currently no sediment data, nor a sediment rating curve, for predicting sediment inflow based on hydrological data. This paper describes the optimization of a cumulative trapped sediment curve for Foum El Kherza Reservoir based on 44 years of daily inflows, by using a spreadsheet optimization tool, Microsoft Excel® Solver to calibrate the cumulative sediment load against the cumulative sediment inflow as documented b...
Water
Sedimentation is steadily depleting reservoir capacity worldwide, threatening the reliability of ... more Sedimentation is steadily depleting reservoir capacity worldwide, threatening the reliability of water supplies, flood control, hydropower energy and other benefits that form the basis of today’s water-intensive society. The strategies available to combat reservoir sedimentation may be classed into four broad categories. Three proactive categories seek to improve the sediment balance across reservoirs by: (a) reducing sediment yield from the watershed, (b) routing sediment-laden flows around or through the storage pool, and (c) removing deposited sediment following deposition. The fourth category (d) consists of strategies that adapt to capacity loss, without addressing the sediment balance. Successful management will typically combine multiple strategies. This paper presents a comprehensive classification of both proactive and adaptive strategies, consistent with current international practice. Functional descriptions and examples are given for each strategy, and criteria are provi...
Sustainable reservoir management seeks to retard sedimentation and reduce its adverse impacts, ul... more Sustainable reservoir management seeks to retard sedimentation and reduce its adverse impacts, ultimately achieving an equilibrium between sediment inflow and outflow while sustaining storage capacity to maximize project benefits. Sedimentation data has traditionally been collected with the objective of simply documenting the timewise decline in reservoir capacity and computation of reservoir " useful life. " However, if the decision is made to manage the reservoir in a sustainable manner the available data needs to be analyzed differently, and additional data will be required to better understand sedimentation processes and develop management alternatives. This paper outlines some of the shortcomings of existing datasets and identifies data interpretation strategies and additional data types that can support sustainable reservoir management.
Many techniques are available to actively manage reservoir sedimentation, and an equally importan... more Many techniques are available to actively manage reservoir sedimentation, and an equally important suite of adaptive strategies are available for managing the impacts of sedimentation without manipulating the sediment. Successful reservoir management to combat the effects of sedimentation may employ a combination of active plus adaptive strategies. This paper describes both active and adaptive strategies to manage reservoir sedimentation, and may be useful as a checklist of options to consider in addressing a sedimentation problem. Widespread application of both active and adaptive strategies will be required to successfully address the growing sedimentation problem worldwide.
Journal of Hydraulic Engineering-asce, 1992
In China, where rivers draining loess soils have some of the highest sediment concentrations in t... more In China, where rivers draining loess soils have some of the highest sediment concentrations in the world, reservoir sedimentation is a serious problem that has been the subject of intensive investigation since 1957. This paper describes patterns of sediment deposition and ...
Journal of Hydraulic Engineering-asce, 1992
During the past 30 years, China has implemented structural and operational procedures to maximize... more During the past 30 years, China has implemented structural and operational procedures to maximize sediment discharge from the impounded reaches of rivers, thereby reducing, arresting, or reversing reservoir sedimentation at many sites. Hydraulic methods used in China to preserve ...
Water resources engineering, 1995
Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Kn... more Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Knowledge & Learning: Books & Journals; CE Body of Knowledge; Certification; Codes & Standards; Conferences; Continuing ...
This work on reservoir sedimentation management and control, emphasizes practice rather than theo... more This work on reservoir sedimentation management and control, emphasizes practice rather than theory, defines the nature and severity of sedimentation, thoroughly reviews relevant physical processes, describes techniques used to combat sedimentation and presents detailed ...
Many techniques are available to actively manage reservoir sedimentation, and an equally importan... more Many techniques are available to actively manage reservoir sedimentation, and an equally important suite of adaptive strategies are available for managing the impacts of sedimentation without manipulating the sediment. Successful reservoir management to combat the effects of sedimentation may employ a combination of active plus adaptive strategies. This paper describes both active and adaptive strategies to manage reservoir sedimentation, and may be useful as a checklist of options to consider in addressing a sedimentation problem. Widespread application of both active and adaptive strategies will be required to successfully address the growing sedimentation problem worldwide.
… , Modeling, and Practice, 2008
Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Kn... more Shop ASCE; MyASCE; Donate Now; Contact Us; About Civil Engineering; About ASCE. ASCE Join Now. Knowledge & Learning: Books & Journals; CE Body of Knowledge; Certification; Codes & Standards; Conferences; Continuing ...
Extending the Life of Reservoirs: Sustainable Sediment Management for Dams and Run-of-River Hydropower, 2016
Reservoir silting is one of the principal problems affecting the performance of dams in Algeria f... more Reservoir silting is one of the principal problems affecting the performance of dams in Algeria from the standpoint of reservoir capacity for storage. Foum El Kherza Reservoir (also known as Foum El Gherza), near Biskra Town, Algeria, is subject to dredging operations with the intent of recovering 70% of its initial storage capacity of 47 hm3 (million cubic metres). The forecasting of sediment volume trapped in the reservoir is essential to plan the future use of this resource and to sustain irrigation for the palm groves characteristic of the region. However, there are currently no sediment data, nor a sediment rating curve, for predicting sediment inflow based on hydrological data. This paper describes the optimization of a cumulative trapped sediment curve for Foum El Kherza Reservoir based on 44 years of daily inflows, by using a spreadsheet optimization tool, Microsoft Excel® Solver to calibrate the cumulative sediment load against the cumulative sediment inflow as documented b...
Water
Sedimentation is steadily depleting reservoir capacity worldwide, threatening the reliability of ... more Sedimentation is steadily depleting reservoir capacity worldwide, threatening the reliability of water supplies, flood control, hydropower energy and other benefits that form the basis of today’s water-intensive society. The strategies available to combat reservoir sedimentation may be classed into four broad categories. Three proactive categories seek to improve the sediment balance across reservoirs by: (a) reducing sediment yield from the watershed, (b) routing sediment-laden flows around or through the storage pool, and (c) removing deposited sediment following deposition. The fourth category (d) consists of strategies that adapt to capacity loss, without addressing the sediment balance. Successful management will typically combine multiple strategies. This paper presents a comprehensive classification of both proactive and adaptive strategies, consistent with current international practice. Functional descriptions and examples are given for each strategy, and criteria are provi...
Sustainable reservoir management seeks to retard sedimentation and reduce its adverse impacts, ul... more Sustainable reservoir management seeks to retard sedimentation and reduce its adverse impacts, ultimately achieving an equilibrium between sediment inflow and outflow while sustaining storage capacity to maximize project benefits. Sedimentation data has traditionally been collected with the objective of simply documenting the timewise decline in reservoir capacity and computation of reservoir " useful life. " However, if the decision is made to manage the reservoir in a sustainable manner the available data needs to be analyzed differently, and additional data will be required to better understand sedimentation processes and develop management alternatives. This paper outlines some of the shortcomings of existing datasets and identifies data interpretation strategies and additional data types that can support sustainable reservoir management.
Many techniques are available to actively manage reservoir sedimentation, and an equally importan... more Many techniques are available to actively manage reservoir sedimentation, and an equally important suite of adaptive strategies are available for managing the impacts of sedimentation without manipulating the sediment. Successful reservoir management to combat the effects of sedimentation may employ a combination of active plus adaptive strategies. This paper describes both active and adaptive strategies to manage reservoir sedimentation, and may be useful as a checklist of options to consider in addressing a sedimentation problem. Widespread application of both active and adaptive strategies will be required to successfully address the growing sedimentation problem worldwide.
Journal of Hydraulic Engineering-asce, 1992
In China, where rivers draining loess soils have some of the highest sediment concentrations in t... more In China, where rivers draining loess soils have some of the highest sediment concentrations in the world, reservoir sedimentation is a serious problem that has been the subject of intensive investigation since 1957. This paper describes patterns of sediment deposition and ...
Journal of Hydraulic Engineering-asce, 1992
During the past 30 years, China has implemented structural and operational procedures to maximize... more During the past 30 years, China has implemented structural and operational procedures to maximize sediment discharge from the impounded reaches of rivers, thereby reducing, arresting, or reversing reservoir sedimentation at many sites. Hydraulic methods used in China to preserve ...