Flows, floods, floodplains and river restoration

Lake, Philip Spencer

doi:10.1111/j.1442-8903.2012.00672.x

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…There is a crucial need for more rigorous research on the effectiveness and risks of this approach, and the various forms of infrastructure by which engineered floods might be created, particularly focusing on the infrastructure required to optimize fluxes to and from the floodplain. Broader research on floodplain restoration more generally is also warranted (Lake 2012). A thorough assessment of the likelihood that engineered floods will achieve their intended ecological goals should be undertaken before the necessary infrastructure is constructed.…”

Section: Discussionmentioning

confidence: 99%

“…A thorough assessment of the likelihood that engineered floods will achieve their intended ecological goals should be undertaken before the necessary infrastructure is constructed. This should include consideration of other floodplain interventions (eg levee removal and agricultural retirement) that may also be required (Lake 2012). The effectiveness of engineered floods in achieving ecological goals should also be further assessed using rigorous monitoring programs that take into account the difficulties of monitoring environmental flow outcomes in regulated river systems (Konrad et al .…”

Section: Discussionmentioning

confidence: 99%

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Ecological risks and opportunities from engineered artificial flooding as a means of achieving environmental flow objectives

Bond

Costelloe

King

et al. 2014

Frontiers in Ecol & Environ

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Ecological risks and opportunities from engineered artificial flooding as a means of achieving environmental flow objectives

Bond

Costelloe

King

et al. 2014

Frontiers in Ecol & Environ

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“…The opportunities afforded by coupled approaches are especially apparent when considering flow releases below dams in conjunction with measures to enhance river-floodplain connectivity within lowland alluvial rivers (Hughes & Rood, 2003;Lake, 2012;Lamouroux et al, 2015;Nilsson et al, 2007), which would address some of the primary degrading forces in large rivers (Gore & Shields, 1995). Figure 2 provides a conceptual example of potential benefits accrued when coupling channel-floodplain manipulation and environmental flow approaches for such a situation.…”

Section: Why Coupled Approaches To Restore Highly Modified Rivers Mak...mentioning

confidence: 99%

Coupling landscapes and river flows to restore highly modified rivers

Whipple

Viers

2019

Water Resources Research

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Modifications to landscapes and flow regimes of rivers have altered the function, biodiversity, and productivity of freshwater ecosystems globally. Reestablishing geomorphological and hydrological conditions necessary to sustain ecosystems is a central challenge for restoration within highly altered systems. Meeting this challenge requires simultaneously addressing multiple and interacting stressors within the context of irreversible changes and socio-economic constraints. Traditionally, river restoration approaches either physically change the landscape or channel (channel-floodplain manipulation) or adjust hydrology (environmental flows), and such actions are often independent. We juxtapose these two subfields of river restoration, which have undergone parallel transformations, from goals of reproducing static representations of form and flow regime to goals of reestablishing processes. The parallel transformations have generated shared ideas, which point to benefits of coupling channel-floodplain manipulation and environmental flow actions to achieve process-based goals. Such coupling supports comprehensive river restoration efforts aimed at supporting resilient ecosystems within human dominated landscapes in a nonstationary climate. We identify four elements of coupled approaches for restoring highly modified rivers:(1) identify physical and ecological process potential given interactive effects of altered landscapes and flows;(2) consider capacity for sustaining identified processes under potential future change; (3) model alternatives for coupled restoration actions to support identified processes; and (4) evaluate alternatives using metrics representing integrative effects of coupled actions. We suggest these emergent elements contribute to the development of standard practices for restoring highly modified rivers and encourage an increasing number and quality of coupled applications.

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“…Blanton & Marcus, ) so that extreme floods can flow along designated and extensive lengths of river and their floodplains. Adequate connectivity between the floodplain and the channel is required to allow flood waters to migrate across and along the floodplain and recede back into the river channel as the flood abates (Lake, ). In the Murray–Darling Basin, Australia, a major management strategy has been to build and manage regulators to control the flow of floodwaters onto floodplains.…”

Section: Extreme Hydrological Events and Stream Restorationmentioning

confidence: 99%

Extreme hydrological events and the ecological restoration of flowing waters

Reich

Lake

2014

Freshwater Biology

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1. Extreme hydrological events (floods, droughts) in flowing waters can alter habitat availability and structure and produce significant shifts in biodiversity, species assemblages and ecosystem processes. 2. Extreme floods and droughts occur over large spatial extents and can greatly alter links between streams and their catchments. The nature and strengths of these links differ between degraded and intact streams and their catchments, strongly influencing the responses to and recovery from extreme events. It is essential that these catchment-stream linkages be identified and considered when planning stream restoration. 3. Despite the scarcity of comprehensive, long-term monitoring of most stream restoration projects, our understanding of the influence of extreme events on running waters suggests both positive and negative impacts on restoration efforts. Extreme hydrological events can impair stream restoration efforts giving rise to delays or complete failures in achieving restoration objectives. Alternatively, extreme floods may facilitate progress towards restoration goals by engendering key ecological processes. 4. Understanding the impacts and the temporal-spatial scales over which extreme events alter the ecological structure and function of streams (in both natural and damaged systems), as well as their underlying mechanisms, is a challenge for stream restorers that will only progress with the accumulation of long-term data. Restorers should recognise and plan for hydrological extreme events and their interactions with other disturbances (e.g. fire, urban development). Increasing connectivity of restoration efforts along with their spatial extent can lessen the negative effects of extreme hydrological events on stream restoration. 5. Successful ecological stream restoration requires long time spans and thus with a changing climate the prediction of more frequent and intense extreme events only strengthens the need to incorporate their likelihood into restoration planning and implementation.

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Flows, floods, floodplains and river restoration

Cited by 4 publications

References 7 publications

Ecological risks and opportunities from engineered artificial flooding as a means of achieving environmental flow objectives

Ecological risks and opportunities from engineered artificial flooding as a means of achieving environmental flow objectives

Coupling landscapes and river flows to restore highly modified rivers

Extreme hydrological events and the ecological restoration of flowing waters

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