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Weather, waste, and leachate data were used to perform a water balance and estimate the contributions of three water sources (infiltration, incoming waste, and leachate recycling) to active municipal solid waste (MSW) landfills in Ohio, USA. Hourly precipitation and ET values wer...

Tributary phosphorus (P) loads are one of the main drivers of eutrophication problems in freshwater lakes. Being able to predict P loads can aid in understanding subsequent load patterns and elucidate potential degraded water quality conditions in downstream surface waters. We de...

Drywells are widely used as managed aquifer recharge devices to capture stormwater runoff and recharge groundwater, but little research has examined the role of subsurface heterogeneity in hydraulic properties on drywell recharge efficiency. Numerical experiments were therefore ...

Drywells (DWs) and infiltration basins (IBs) are widely used as managed aquifer recharge (MAR) devices to capture stormwater runoff and recharge groundwater. However, no published research has compared the performance of these two engineered systems under shared conditions. Numer...

Many arid and semi-arid regions of the world face challenges in maintaining water quantity and quality needs of growing populations. A drywell is an engineered vadose zone infiltration device widely used for stormwater capture and managed aquifer recharge. To our knowledge, no pr...

The HELP model is used by landfill designers/owners to demonstrate that the leachate depth over a landfill liner does not exceed the 30 cm (one foot) limit required by the Resource Conservation and Recovery Act 40 CFR 264.301 “Design and Operating Requirements” for landfills. •T...

Headwater streams drain over 70% of the land in the United States with headwater wetlands covering 6.59 million hectares. These ecosystems are important landscape features in the southeast United States, with underlying effects on ecosystem health, water yield, nutrient cycling, ...

Visualizing Ecosystem Land Management Assessments (VELMA) is an ecohydrology model being leveraged in a recently-initiated effort to identify practical, proactive watershed restoration strategies that can be initiated now to lessen long-term impacts of climate change on Puget Sou...

Visualizing Ecosystem Land Management Assessments (VELMA) is an ecohydrology model being leveraged in a recently initiated effort to identify practical, proactive watershed restoration strategies that can be initiated now to lessen long-term impacts of climate change on Puget Sou...

 This presentation focuses on Puget Sound applications of the U.S. EPA’s VELMA ecohydrological model for identifying watershed BMPs for reducing various pollutants impacting freshwater and marine water quality endpoints of concern. The presentation is one of six workshop presenta...

This presentation focuses on applications of the U.S. EPA’s VELMA ecohydrological model for assessing the effectiveness green and gray infrastructure improvements for reducing stormwater contaminant loads to Seattle’s Longfellow Creek. This creek, like many other urban creeks dra...

·         Transport of materials from the landscape controls nearshore water quality in most estuarine and coastal ecosystems, including Puget Sound. A prevailing assumption is that nearshore and coastal water quality can be improved through effective land use policies designed t...

This Facilitator Manual provides the practical steps necessary for an agency or organization to implement a multi-session, participatory workshop for municipalities to engage their communities in the development of stormwater funding solutions. The Manual is a paired resource wit...

Our nation's water infrastructure is in need of billions of dollars of repairs, upgrades, and replacements. This presentation provides an overview of recent EPA Office of Research and Development research on the topic of resilient water infrastructure, including free models and t...

Urban centers are a major greenhouse gas (GHG) emission source in the global carbon budget, making them a focus of climate mitigation and adaptation. Adapting and optimizing carbon-laden inflexible transportation and water supply infrastructure through adaptive urban planning and...

Presenting a brief introduction to EPA's National Stormwater Calculator at the EWRI Congress

Bioretention units were constructed at USEPA’s Edison Environmental Center to evaluate drainage to surface runoff ratio for sizing of bioretention stormwater controls. Three sizes of hydraulically isolated bioretention units were tested in duplicate with changes in aspect ratio o...

Using the US EPA&rsquo;s Grants Reporting and Tracking System (GRTS), we test if completion of best management practices (BMPs) through the Clean Water Act Section (&sect;)319 National&nbsp;Nonpoint Source&nbsp;Program was associated with a decreasing trend in total suspended sol...

Presentation to EPA Region 2 Science Council on green infrastructure stormwater planters&nbsp;

Bioinfiltration units were constructed at USEPA&rsquo;s Edison Environmental Center to evaluate drainage to surface runoff ratio for sizing of bioinfiltration stormwater controls. Three sizes of hydraulically isolated bioinfiltration units were tested in duplicate with changes in...

Climate change is expected to result in more intense precipitation events that will affect the performance and design requirements of stormwater management infrastructure. Projected changes will vary regionally, and for events of different magnitude. Potential impacts include alt...

To evaluate the effectiveness of dispersed stormwater control measures (SCMs) it is important to consider groundwater-surface water interactions and their consequences for stream hydrologic responses relevant to channel geomorphic stabilty and ecology. A process-based block-conne...

Environmental changes impact people&rsquo;s perceptions, values, and uses of waterbodies. Understanding the impacts of environmental changes can help improve governance, practitioner engagement, and user education. We will discuss the green infrastructure (GI) possibilities of cr...

This is a presentation on how homeowners or developers can use EPA's National Stormwater Calculator for LEED v4 documentation for credits and also to help design their green infrastructure low-impact development controls. 

Freshwater Salinization Syndrome (FSS) refers to the suite of physical, biological, and chemical impacts of salt ions on the degradation of natural, engineered, and social systems. Impacts of FSS on mobilization of chemical cocktails has been documented in streams and groundwater...