Peer-Reviewed Journal Articles
Hawley, R.J., Cooper, K., McGregor, M., Acosta, S., Mulhall, B., Raetz, A., and Korth, N.L. 2025. Seasonally stable wetted width elucidates freshwater mussel species richness and endangered species presence: implications for T&E management programs and stream restoration design. Restoration Ecology, 33(1): e14341. Open Access »
2025
2024
Goode, J.R., Hawley, R.J., Lewis, R.H., and Mulhall, B. 2024. Rapid geomorphic assessment walkabouts as a tool for stream mitigation monitoring. Journal of the American Water Resources Association, 60(5): 991-1007. Open Access »
Nietch, C.T., Hawley, R.J., Safwat, A., Christensen, J.R., Heberling, M.T., McManus, J., McClatchey, R., Lubbers, H., Smucker, N.J., Onderak, E., and Macy, S. 2024. Implementing constructed wetlands for nutrient reduction at watershed scale: Opportunity to link models and real world execution. Journal of Soil and Water Conservation, 79(3): 113-131. Open Access »
van Rees, C.B., Chambers, M.L., Catalano, A.J., Buhr, D.X., Mansur, A.V., Hall, D.M., Nelson, A., Suedel, B., Hawley, R.J., Bledsoe, B., and Nibbelink, N. 2024. An interdisciplinary overview of levee setback benefits: Supporting spatial planning and implementation of riverine nature-based solutions. WIREs Water, 11(6): e1750. Open Access »
2023
Hawley, R.J., Thomas, J.A., and Acosta, S.N. 2023. Watershed-scale strategies to increase resilience to climate-driven changes to surface waters: North American electric power sector case study. Journal of Water Resources Planning and Management, 149(5). Open Access »
Kaushal, S.S., Fork, M.L., Hawley, R.J., Hopkins, K.G., Rios-Touma, B., and Roy, A.H. 2023. Stream restoration milestones: Monitoring scales determine successes and failures. Urban Ecosystems, 26: 1131-1142. Read Article »
2022
Fork, M.L. Hopkins, K.G., Chappell, J., Hawley, R.J., Kaushal, S.S., Murphy, B., Rios-Touma, B., and Roy, A. 2022. Urbanization and stream ecology: Moving the bar on multidisciplinary solutions to wicked urban stream problems. Freshwater Science, 41(3): 398-403. Read Article »
Hawley, R.J. 2022. Expanding catchment-scale hydrologic restoration in suburban watersheds via stream mitigation crediting—A Northern Kentucky (USA) case study. Urban Ecosystems, 25: 133-147. Open Access »
Hawley, R.J., Russell, K., and Olinde, L. 2022. Qc threshold departs from theoretical Qc in urban watersheds: The role streambed mobility data in managing the urban disturbance regime. Freshwater Science, 41(3): 489-506. Read Article >>
Hawley, R.J., Russell, K., and Taniguchi-Quan, K. 2022. Restoring geomorphic integrity in urban streams via mechanistically-based storm water management: minimizing excess sediment transport capacity. Urban Ecosystems, 25: 1247-1264. Open Access »
Murphy, B.M., Russell, K.L., Stillwell, C.C., Hawley, R.J., Scoggins, M., Hopkins, K.G., Burns, M.J., Taniguchi-Quan, K.T., Macneale, K.H., and Smith, R.F. 2022. Closing the gap on wicked urban stream restoration problems: integrating science and social-ecological values. Freshwater Science, 41(3): 521-531. Open Access »
Rieck, L., Carson, C., Hawley, R.J., Heller, M., Paul, M., Scoggins, M., Zimmerman, M., and Smith, R.F. 2022. Phase II MS4 challenges: moving toward effective stormwater management for small municipalities. Urban Ecosystems. 25: 657-672 Open access »
Scoggins, M., Booth, D.B., Fletcher, T., Fork, M., Gonzalez, A., Hale, R.L., Hawley, R.J., Roy, A., Bilger, E., Bond, N., Burns, M.J., Hopkins, K., Macneale, K., Marti, E., McKay, S.K., Neale, M., Paul, M., Rios-Touma, B., Russell, K.L., Smith, R., Wagner, S., and Wenger, S. 2022. Community-powered urban stream restoration: A framework for sustainable and resilient urban ecosystems. Freshwater Science, 41(3): 404-419. Open Access »
Wooten, M.S, Hawley, R.J., and Rust, C. 2022. Optimizing stormwater management to facilitate urban stream restoration via a science-based approach. Freshwater Science, 41(3): 477-488. Read Article »
2021
Mikelonis, A.M., Hawley, R.J., and Goodrich, J.A. 2021. Emergency response to stormwater contamination: A framework for containment and treatment. Journal of Environmental Management, 280: 111838. Read article »
EPA’s Stormwater Emergency Response Framework (SERF) Homepage
2020
Hawley, R.J., MacMannis, K.R., Wooten, M.S., Fet, E.V., and Korth, N.L. 2020. Suburban stream erosion rates in northern Kentucky exceed reference channels by an order of magnitude and follow predictable trajectories of channel evolution. Geomorphology, 352: 106998. Open Access »
2019
Hawley, R.J. and MacMannis, K.R. 2019. Tree roots as a dominant agent of streambed habitat, profile pattern, and grade control. Geomorphology, 343: 81-91. Open Access »
2018
Hawley, R.J. 2018. Making stream restoration more sustainable: A geomorphically, ecologically, and socioeconomically principled approach to bridge the practice with the science. BioScience, 68(7): 517-528. Open Access »
Sengupta, A., Hawley, R.J., and Stein, E.D. 2018. Predicting hydromodification in streams using nonlinear memory-based algorithms in southern California streams. Journal of Water Resources Planning and Management, 144(1): 04017079. Read article »
2017
Hawley, R.J., Goodrich, J.A., Korth, N.L., Rust, C.J., Fet, E.V., Frye, C., MacMannis, K.R., Wooten, M.S., Jacobs, M., and Sinha, R. 2017. Detention outlet retrofit device improves the functionality of existing detention basins by reducing erosive flows in receiving channels. Journal of the American Water Resources Association, 53(5): 1032-1047. Read article »
2016
Hawley, R.J. and G.J. Vietz. 2016. Addressing the urban stream disturbance regime. Freshwater Science, 35(1): 278-292. Read article »
Hawley, R.J., Wooten, M.S., MacMannis, K.R., and E.V. Fet. 2016. When do macroinvertebrate communities of reference streams resemble urban streams? The biological relevance of Q critical. Freshwater Science, 35(3): 778-794. Read article »
Smith, R.F., Hawley, R.J., Neale, M.W., Vietz, G.J., Diaz-Pascacio, E., Herrmann, J., Lovell, A.C., Prescott, C., Rios-Touma, B., Smith, B. and R.M. Utz. 2016. Urban stream renovation: incorporating societal objectives to achieve ecological improvements. Freshwater Science, 35(1): 364-379. Read article »
Utz, R.M., Hopkins, K., Beesley, L., Booth, D., Hawley, R.J., Baker, M., Freeman, M.C., and K. Jones. 2016. Ecological resistance in urban streams: the role of natural and legacy attributes. Freshwater Science, 35(1): 380-397. Read article »
2013
Hawley, R.J. and B.P. Bledsoe. 2013. Channel enlargement in semi-arid suburbanizing watersheds: A Southern California case study. Journal of Hydrology, 496: 17-30.
Read article »
Hawley, R.J., MacMannis, K.R., and M.S. Wooten. 2013. Bed coarsening, riffle shortening, and channel enlargement in urbanizing watersheds, northern Kentucky, USA. Geomorphology, 201: 111-126. Read article »
2012
Bledsoe, B.P., Stein, E.D., Hawley, R.J., and D.B. Booth. 2012. Framework and tool for rapid assessment of stream susceptibility to hydromodification. Journal of the American Water Resources Association, 48(4): 788-808. Read article »
Hawley, R.J., Bledsoe, B.P., Stein, E.D., and B.E. Haines. 2012. Channel evolution model of semiarid stream response to urban-induced hydromodification. Journal of the American Water Resources Association., 48(4): 722-744. Read article »
Hawley, R.J., Wooten, M.S., Vatter, B.C., Onderak, E., Lachniet, M .J., Schade, T., Grant, G., Groh, B., and J. DelVerne. 2012. Integrating stormwater controls designed for channel protection, water quality, and inflow/infiltration mitigation in two pilot watersheds to restore a more natural flow regime in urban streams. Watershed Science Bulletin, 3(1), 25-37. Read article »
2011
Hawley, R.J. and B.P. Bledsoe. 2011. How do flow peaks and durations change in suburbanizing semi-arid watersheds? A southern California case study. Journal of Hydrology, 405 (1-2), 69-82. Read article »
Book Chapters
2019
Vietz, G.J. and R.J. Hawley. 2019. Protecting and Managing Stream Morphology in Urban Catchments Using WSUD. In Approaches to Water Sensitive Urban Design, A. Sharma, D. Begbie, and T. Gardner (Eds). Elsevier, pp. 249-267. Read article »
Patents
2019
Hawley, R.J., Goodrich J.A., and MacMannis, K.R. 2019. Detain H2O – Detention Pond Retrofit Device. U.S. Patent Number 10,316,506. Patent Issued June 11, 2019. Read more »
CONGRESSIONAL TESTIMONY
Gibson, J.P. 2014. Testimony submitted to the United States Senate, Environment and Public Works Committee, Water and Wildlife Subcommittee. Hearing entitled, "Solving the Problem of Polluted Transportation Infrastructure Stormwater Runoff." May 13, 2014.
See full testimony and video archive »
Sustainable Streams' client serves as an invited witness to US Senate Hearing on Stormwater Runoff. See written testimony from Mr. James P. Gibson, Jr. of SD1 or watch the full video archive.
Industry Media and News
US EPA. 2022. Watershed Planning and Partnerships Lead to Gunpowder Creek Delisting. Read article »
Louisville's Mill Creek could be among 'largest urban stream restoration projects' in US. Courier Journal, January 12, 2022. Read article »
Buried for generations, a creek re-emerges in Cincinnati – and carries the hopes of a neighborhood. Cinncinati.com, January 20, 2021. Read article »
SD1 bringing innovative approach to region’s growing erosion problem; protecting public health. Northern Kentucky Tribune, July 18, 2018. Read article »
Hawley, R., Lyons, J., Wolnitzek, G., and Lodor, M. 2015. Stream daylighting – A viable CSO mitigation strategy. World Water: Stormwater Management. Water Environment Federation, April/May 2015, p. 17-19. Read article »
WEF. 2012. Stream-channel Protection Requires Focus on more than Flow Magnitude. The Stormwater Report. Newsletter of the Water Environment Federation (WEF), 2(8). Read article »
Hawley, R.J. 2012. New Stormwater Regulations: 'Channel Protection Controls' — What Are They and What Do They Mean? Stream Lines. Newsletter of the KY-TN Water Environment Association, Spring/Summer 2012, p. 28-30. Read article »
Webinars and Workshops
Preventing Stream Erosion Using Qcritical Stormwater Management – Austin, TX. ASCE EWRI Workshop. June 16, 2023. Watch »
Hand-placed Logs Demonstration Workshop. Oldham County Fiscal Court. October 17, 2022. Watch »
Urban stream geomorphology – science and management insights from Australia, Canada, and the United States. Symposium on Urbanization and Stream Ecology. September 8, 2022. Watch »
Low-cost Stream Enhancement Using Hand-placed Log Structures. Chagrin River Watershed Partners. February 22, 2022. Watch »
Stormwater Basin Retrofit Screening Tool Training. Central Lake Erie Basin Collaborative. August 17, 2021. Watch »
Design for Stream Restoration and Channel Stability at Stream Crossings. Transportation Research Board of the National Academies of Sciences, Engineering, and Medicine. April 30, 2018. More Information »
PUBLIC SERVICE ANNOUNCEMENTS
The Role of Floodplain Wetlands in Reducing Erosion and Nutrients in Streams and Waterways—the Williamsburg Off-Channel Wetland Project. Public Service Announcement from Clermont Soil and Water Conservation District. December 14, 2023. Watch »
Stormwater Basin Retrofits to Reduce Stream Erosion—the Role of Qcritical. Public Service Announcement from the Kentucky Division of Water. April 25, 2023. Watch »