Robert J. Hawley
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View article: Reorienting urban stream management to focus on equitable delivery of benefits
Reorienting urban stream management to focus on equitable delivery of benefits Open
Urban streams are often managed in ways that contribute to societal inequities. Members of marginalized groups are frequently exposed to elevated flood risk and impaired water quality, with reduced access to essential water infrastructure …
View article: Seasonally stable wetted width elucidates freshwater mussel species richness and endangered species presence: implications for T&E management programs and stream restoration design
Seasonally stable wetted width elucidates freshwater mussel species richness and endangered species presence: implications for T&E management programs and stream restoration design Open
Centuries of beaver extirpation, deforestation, and other anthropogenic impacts have disconnected North American rivers from their floodplains and concentrated more hydraulic energy within their channels, degrading aquatic habitat and maki…
View article: An interdisciplinary overview of levee setback benefits: Supporting spatial planning and implementation of riverine nature‐based solutions
An interdisciplinary overview of levee setback benefits: Supporting spatial planning and implementation of riverine nature‐based solutions Open
Nature‐based solutions (NbS, and related concepts like natural infrastructure, Ecosystem‐based Adaptation, and green infrastructure) are increasingly recognized as multi‐benefit strategies for addressing the critical sustainability challen…
View article: Rapid geomorphic assessment walkabouts as a tool for stream mitigation monitoring
Rapid geomorphic assessment walkabouts as a tool for stream mitigation monitoring Open
Monitoring of compensatory stream mitigation projects conventionally relies on spatially discrete geometric data and habitat assessments collected from representative reaches. Project success is evaluated by extrapolating site‐scale metric…
View article: Implementing constructed wetlands for nutrient reduction at watershed scale: Opportunity to link models and real-world execution
Implementing constructed wetlands for nutrient reduction at watershed scale: Opportunity to link models and real-world execution Open
The negative effects of nutrient pollution in streams, rivers, and downstream waterbodies remain widespread global problems. Understanding the cost-effectiveness of different strategies for mitigating nutrient pollution is critical to maki…
View article: Watershed-Scale Strategies to Increase Resilience to Climate-Driven Changes to Surface Waters: North American Electric Power Sector Case Study
Watershed-Scale Strategies to Increase Resilience to Climate-Driven Changes to Surface Waters: North American Electric Power Sector Case Study Open
This case study synthesizes strategies that electric power utilities can implement to reduce surface water risks to infrastructure, operations, and regulatory compliance as climate change impacts hydrologic regimes over the next century. T…
View article: Closing the gap on wicked urban stream restoration problems: A framework to integrate science and community values
Closing the gap on wicked urban stream restoration problems: A framework to integrate science and community values Open
Restoring the health of urban streams has many of the characteristics of a wicked problem. Addressing a wicked problem requires managers, academics, practitioners, and community members to make negotiated tradeoffs and compromises to satis…
View article: Community-powered urban stream restoration: A vision for sustainable and resilient urban ecosystems
Community-powered urban stream restoration: A vision for sustainable and resilient urban ecosystems Open
Urban streams can provide amenities to people living in cities, but those benefits are reduced when streams become degraded, potentially even causing harm (disease, toxic compounds, etc.). Governments and institutions invest resources to i…
View article: Restoring geomorphic integrity in urban streams via mechanistically-based storm water management: minimizing excess sediment transport capacity
Restoring geomorphic integrity in urban streams via mechanistically-based storm water management: minimizing excess sediment transport capacity Open
Stream channel erosion, enlargement, and habitat degradation are ubiquitous in urban watersheds with conventional stormwater management that increase channel-eroding flows relative to undeveloped watersheds. Hydrologic-based restoration ai…
View article: Restoring Geomorphic Integrity in Urban Streams via Mechanistically Based Stormwater Management: Minimizing Excess Sediment Transport Capacity
Restoring Geomorphic Integrity in Urban Streams via Mechanistically Based Stormwater Management: Minimizing Excess Sediment Transport Capacity Open
Stream channel erosion, enlargement, and habitat degradation are ubiquitous in urban watersheds with conventional stormwater management. Hydrologic-based restoration aims to discharge a more natural flow regime via stormwater management in…
View article: Phase II MS4 challenges: moving toward effective stormwater management for small municipalities
Phase II MS4 challenges: moving toward effective stormwater management for small municipalities Open
Federal regulations for municipal separate storm sewer systems (MS4s) in the United States have been in place since 1990 as part of the Nation Pollutant Discharge Elimination System (NPDES), aiming to reduce sediment and pollutant loads or…
View article: Expanding catchment-scale hydrologic restoration in suburban watersheds via stream mitigation crediting—A Northern Kentucky (USA) case study
Expanding catchment-scale hydrologic restoration in suburban watersheds via stream mitigation crediting—A Northern Kentucky (USA) case study Open
The need for hydrologic restoration is well established in stream ecosystems across the world; however, available funding for catchment-scale restoration typically falls far short of what is required to produce in-stream results. Hydrologi…
View article: Expanding catchment-scale hydrologic restoration in suburban watersheds via stream mitigation crediting—A Northern Kentucky (USA) case study
Expanding catchment-scale hydrologic restoration in suburban watersheds via stream mitigation crediting—A Northern Kentucky (USA) case study Open
The need for hydrologic restoration is well established in stream ecosystems across the world; however, available funding for catchment-scale restoration typically falls far short of what is required to produce in-stream results. Hydrologi…
View article: Suburban stream erosion rates in northern Kentucky exceed reference channels by an order of magnitude and follow predictable trajectories of channel evolution
Suburban stream erosion rates in northern Kentucky exceed reference channels by an order of magnitude and follow predictable trajectories of channel evolution Open
This paper documents ranges of streambed and bank erosion observed across suburban northern Kentucky via time-series surveys at 61 stream monitoring sites from the last ~10 yr. Average erosion rates in streams draining undeveloped watershe…
View article: Tree roots as a dominant agent of streambed habitat, profile pattern, and grade control
Tree roots as a dominant agent of streambed habitat, profile pattern, and grade control Open
Tree roots are a ubiquitous biotic agent in numerous fluvial settings, but their role in controlling streambed habitat and profile patterns is understudied. Although their importance in resisting bank erosion is more widely reported, tree …
View article: Making Stream Restoration More Sustainable: A Geomorphically, Ecologically, and Socioeconomically Principled Approach to Bridge the Practice with the Science
Making Stream Restoration More Sustainable: A Geomorphically, Ecologically, and Socioeconomically Principled Approach to Bridge the Practice with the Science Open
Despite large advances in the state of the science of stream ecology and river mechanics, the practitioner-driven field of stream restoration remains plagued by narrowly focused projects that sometimes even fail to improve aquatic habitat …
View article: Detention Outlet Retrofit Improves the Functionality of Existing Detention Basins by Reducing Erosive Flows in Receiving Channels
Detention Outlet Retrofit Improves the Functionality of Existing Detention Basins by Reducing Erosive Flows in Receiving Channels Open
By discharging excess stormwater at rates that more frequently exceed the critical flow for stream erosion, conventional detention basins often contribute to increased channel instability in urban and suburban systems that can be detriment…
View article: Urban stream renovation: incorporating societal objectives to achieve ecological improvements
Urban stream renovation: incorporating societal objectives to achieve ecological improvements Open
Pervasive human impacts on urban streams make restoration to predisturbance conditions unlikely. The effective- ness of ecologically focused restoration approaches typically is limited in urban settings because of the use of a reference-co…