Ice in reservoirs and regulated rivers

Huokuna, Mikko; Morris, M. P.; Beltaos, Spyros; Burrell, Brian C.

doi:10.1080/15715124.2020.1719120

Cited by 21 publications

(9 citation statements)

References 48 publications

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“…This suggests observed changes within the GLM complex are being compounded by other factors such as climate change and increased urbanization, and there is some evidence of limited sediment deposition behind Mactaquac Dam (Grace et al, 2017). Dam construction is, however, linked to the probability and location of ice jams, an important flood pulse mechanism in the Wolastoq | Saint John River (Canadian Rivers Institute, 2011;Huokuna et al, 2020). Although it is problematic to confirm without baseline measurements, the increased inundation period, as well as the sediment deprivation experienced in floodplains following upstream dam construction (Marren et al, 2014), likely had a role in the loss of wetland habitat that is evident in the GLM complex.…”

Section: Anthropogenic Alteration Of Floodplain Wetlandsmentioning

confidence: 99%

“…Through hydropeaking, even run-of-the-river dams can significantly alter downstream hydrology; water may be released at regular intervals or steadily, unlike the variable flood pulses in a natural system (Almeida et al, 2020). In temperate rivers, where ice jams are an important driver of spring flood pulses (Tockner et al, 2010), dams can create physical barriers to ice, altering ice regimes by impacting the probability and location of ice jams, and thus the volume and timing of the spring freshet (Huokuna et al, 2020). Dams also change sediment dynamics in the river by trapping fine sediment behind impoundments, starving them of nutrients and leaving downstream riverbeds composed of greater proportions of gravel (Csiki and Rhoads, 2014).…”

Section: Introductionmentioning

confidence: 99%

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The Beautiful and the Dammed: Defining Multi-Stressor Disturbance Regimes in an Atlantic River Floodplain Wetland

et al. 2021

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Natural hydrological fluctuations within river floodplains generate habitat diversity through variable connections between habitat patches and the main river channel. Human modification of floodplains can alter the magnitude and frequency of large floods and associated sediment movement by interrupting these floodplain connections. The lower Wolastoq | Saint John River and its associated floodplain wetlands are experiencing anthropogenic disturbances arising from climate change, increased urbanization in the watershed, changing upstream agricultural landscape practices, and, most notably, major road and dam construction. By comparing digitized aerial images, we identified key periods of change in wetland extent throughout an ecologically significant component of the floodplain, the Grand Lake Meadows and Portobello Creek wetland complex, with significant erosion evident in coves and backwater areas across the landscape following dam construction and significant accretion around the Jemseg River following highway construction. Connectivity and hydrological regime also influenced other habitat components, namely nutrients and metals retention, as well as the composition of the local macrophyte community. These findings address two key aspects of floodplain management: (1) understanding how hydrological alteration has historically influenced floodplain wetlands can inform us of how the ecosystem may respond under future conditions, such as climate change, and (2) the mechanisms by which habitat diversity and disturbance regimes filter biological communities, with the potential for patches to host a rich biodiversity continuously supporting critical ecosystem functions.

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Section: Anthropogenic Alteration Of Floodplain Wetlandsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Beautiful and the Dammed: Defining Multi-Stressor Disturbance Regimes in an Atlantic River Floodplain Wetland

et al. 2021

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“…Widespread geomorphological changes, including the loss of sinuosity and the widening of the active unvegetated channel, have been observed along the Aishihik River, Yukon, and attributed mainly to the effect of regulation on river-ice processes [74]. In addition to other factors, downstream transport and deposition characteristics of the river may be significantly modified because ice breakup regimes can change considerably under regulation [75]. Such changes should be carefully considered in planning new projects or in assessing environmental impacts of existing projects.…”

Section: Environmental Implications 61 Geomorphic Considerationsmentioning

confidence: 99%

Effects of River-Ice Breakup on Sediment Transport and Implications to Stream Environments: A Review

Beltaos

Burrell²

2021

Water

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During the breakup of river ice covers, a greater potential for erosion occurs due to rising discharge and moving ice and the highly dynamic waves that form upon ice-jam release. Consequently, suspended-sediment concentrations can increase sharply and peak before the arrival of the peak flow. Large spikes in sediment concentrations occasionally occur during the passage of sharp waves resulting from releases of upstream ice jams and the ensuing ice runs. This is important, as river form and function (both geomorphologic and ecological) depend upon sediment erosion and deposition. Yet, sediment monitoring programs often overlook the higher suspended-sediment concentrations and loads that occur during the breakup period owing to data-collection difficulties in the presence of moving ice and ice jams. In this review paper, we introduce basics of river sediment erosion and transport and of relevant phenomena that occur during the breakup of river ice. Datasets of varying volume and detail on measured and inferred suspended-sediment concentrations during the breakup period on different rivers are reviewed and compared. Possible effects of river characteristics on seasonal sediment supply are discussed, and the implications of increased sediment supply are reviewed based on seasonal comparisons. The paper also reviews the environmental significance of increased sediment supply both on water quality and ecosystem functionality.

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“…It is also noteworthy to mention that one of the major complications is related to frazil ice accumulation in trash racks, which may happen immediately, and results in blocking the flow to the intake [9]. Moreover, in this season, the storage capacity of the reservoir is only partially utilized due to the ice formation in the reservoir and the winter baseflow reduction [10]. Bo et al suggested that more water needs to be carried before than during the ice period, per se, to keep the ice cover continuous [3].…”

Section: Introductionmentioning

confidence: 99%

The Application of the Thermal Stabilization Prompted by the Ice Cover Expansion Considering the Energy Production Optimization in the Dam-Reservoir Coupled Systems on the Vistula River

Kolerski

Radan

2022

Energies

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In this study, the thermal stabilization of a water resource together with an energy production optimization in the power plant of the dam–reservoir coupled system is conducted. This coupled dam system is designed to consist of a primary (Włocławek) and secondary (Siarzewo) dam due to the erosion control aspect. The other beneficial aspect of this coupled dam design is to have an additional power plant, with the aim of achieving more efficient renewable energy production. One of the factors to be included in the conditions influencing the energy production is the ice formation in the reservoir and tailwater due to the hydrodynamic and meteorological conditions of the site location. Frazil formation and jam may reduce the power plant efficiency. The concept of thermal stabilization, based on the previous studies, refers to providing the ice cover in the reservoir section of a dam to isolate the water from thermal condition. In this research, the ice cover expansion is triggered by the discharge reduction over a specific time and the entire study site. The optimized discharge for stimulating the ice cover through the night was found based on the results, leading to the desired thermal stabilization. This power loss emerged by reduced water withdrawal in the specific time during the day (nighttime), and will be remedied by the more suitable hydrodynamic condition over winter.

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Ice in reservoirs and regulated rivers

Cited by 21 publications

References 48 publications

The Beautiful and the Dammed: Defining Multi-Stressor Disturbance Regimes in an Atlantic River Floodplain Wetland

The Beautiful and the Dammed: Defining Multi-Stressor Disturbance Regimes in an Atlantic River Floodplain Wetland

Effects of River-Ice Breakup on Sediment Transport and Implications to Stream Environments: A Review

The Application of the Thermal Stabilization Prompted by the Ice Cover Expansion Considering the Energy Production Optimization in the Dam-Reservoir Coupled Systems on the Vistula River

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