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Showing 1 to 20 of 20 for “"impervious cover"”.
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Detecting Impervious Cover with Artificial Lighting in Astronaut Photography from the International Space Station
Impervious cover continues to pose a threat to flood-prone regions, especially the ones in dense urban areas. Mapping the location of impervious surface becomes vital to properly managing drainage and runoff in a city, along with the health of fluvial ecosystems. Kotarba and Aleksandrowicz, in …
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Creating A Stormwater Runoff Model For The City Of Oxford, Mississippi: When It Rains, Where Does That Water Go?
… urbanization. This rapid increase creates more impervious cover, such as bridges, roads, parking lots, etc., which can cause a stress on the capacity of stream load and causes flooding. To correct this, storm water management is needed in the city. This stormwater runoff model uses data …
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Assessment of Mansionization and Residential Infill Development on Stormwater Runoff
… development and the associated increases in impervious cover and stormwater runoff have the potential to overwhelm aging infrastructure causing erosion, flooding, and ecological degradation of waterways. The lack of greenfield sites available for new development around urban centers coupled …
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Urban wildlife species detection, species richness, and community shifts along a gradient of urbanization in an agriculturally embedded landscape using passive and active methods
… to a gradient of urbanization, measured by impervious cover, in Regina, Saskatchewan, Canada. Regina is a prairie city with a large amount of green space of planted trees, a lake, and is surrounded largely by monoculture annual crops. I deployed trail cameras and automated recording units to …
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Runoff Impacts And Lid Mitigation Techniques For Mansionization Based Stormwater Effects In Fairfax County, Va
… the subwatershed showed an average increase in impervious cover from 8% to 28% after redevelopment, resulting in an average increase in runoff volume of 18% for the 10-year, 24-hour storm. From 1997 to 2009, the total impervious cover in the subwatershed increased from 18% to 25%, resulting in a …
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Simulation of Runoff and Pollutant Loss in Urbanizing Watersheds
… planners in areas that previously had little impervious cover must now consider the effects of new roads and buildings on hydrologic processes. The ANSWERS-2000 watershed model was modified to simulate watersheds with mixtures of agricultural and urban areas. In addition, components were added …
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Modeling Watershed-Wide Bioretention Stormwater Retrofits to Achieve Thermal Pollution Mitigation Goals
… resulting in more heated runoff from impervious cover that is less likely to be cooled naturally. While several best management practices, including bioretention filters, have been able to reduce thermal pollution, success has been limited. The extent of thermal mitigation required to …
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The Effect of Antecedent Dry Time on Water Quality Inflow and Outflow to Wet Ponds and Pollutant Removal Efficiency
… of vegetation and pervious areas, and increased impervious cover, pollutant loading, and volume and velocity of storm water runoff. The potential for flooding and increased loading of pollutants into surface waters negatively impacts drinking water supplies, outdoor recreation, wildlife, …
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Effect of Urbanization on the Hyporheic Zone: Lessons from the Virginia Piedmont
… that relate urbanization (e.g., total percent impervious) with hyporheic potential at several spatial scales. For example, at the watershed level, we observed a decrease in horizontal hydraulic conductivity with urbanization and an increase in vertical hydraulic conductivity, which ultimately …
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Tree Canopy Cover Response to Land Development Policies in Fairfax County
Urban tree canopy cover is important because it mitigates negative impacts of urbanization such as urban heat and stormwater. Land development leads to canopy loss through tree removal, but some localities have regulations in place that require trees to be retained or replanted during development. …
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Land Cover and Impervious Surface Mapping Using Multispectral Airborne Laser Scanner Data
Impervious surfaces are land covers that do not allow water penetration. Water runoff from impervious surfaces can cause major flooding in extreme climates; therefore, mapping such surface covers in urban areas is of great importance for water resources, climatology, and urban studies. Automated …
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Investigation of Low Impact Development Practices For Coastal South Carolina: Oak Terrace Preserve
… lands to sprawling urban development. The impervious cover (e.g., roads, rooftops, driveways) that accompanies urban development leads to increases in the volume of stormwater and subsequent contributions of non-point source pollution to coastal water bodies (e.g., tidal creeks). State and …
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Population Dynamics and Occupancy Patterns of Eastern Screech Owls (Megascops Asio) in New York City Parks and Adjacent Suburbs
… modeled as functions of the amount of forest cover and impervious surface cover at each survey point. These models were validated against an independent dataset collected by myself and other trained scientists. Validated models indicated a negative association between occupancy and percent …
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Quantifying Long-Term Hydrologic and NPS Pollutant Response in an Urbanizing Watershed
… water chemistry, and derived land use/land cover (LULC) data. Long-term summaries document that several hydrologic and NPS pollutant delivery characteristics in the urbanizing Cub Run basin are significantly different from adjacent non-urban basins. Higher annual NPS fluxes of total …
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Spatial Analysis of La Nana Bayou Watershed to Assess Stream Health
… was to evaluate the feasibility of using land cover mapping to identify water quality indicators within a river basin, assessing whether this method provides greater efficiency compared to traditional field-based water quality testing. Land cover mapping has efficiently monitored environmental …
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Turbidity and Nutrient Response to Storm Events in the Wissahickon Creek, Suburban Philadelphia, PA
… physical parameters, bank vegetation, and algae cover. High frequency turbidity data suggests that the turbidity is locally sourced, as turbidity peaks at the same time as water level, or within an hour or two, at all sites regardless of storm size. Comparisons of the turbidity response with …
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Assessing annual urban change and its impacts on evapotranspiration
Land Use Land Cover Change (LULCC) is a major component of global environmental change, which could result in huge impacts on biodiversity, water yield and quality, climate, soil condition, food security and human welfare. Of all the LULCC types, urbanization is considered to be the most impactful …
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Characteristics of urban development and associated stormwater quality
Urban land uses and their associated impervious cover increase the quantity and worsen the quality of stormwater runoff, which can seriously impair receiving waters. It is known that there is considerable variability in runoff quantity and quality between rain-to-rain events due to rainfall spatial …
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Using Geophysics and Terrestrial LiDAR to Assess Stormwater Parameters in Vacant Lots in Philadelphia
… become an important issue in urban hydrology. Impervious cover associated with urbanization increases surface runoff volumes and degrades the water quality of urban streams and rivers. Cities with combined stormwater and sewer lines such as Philadelphia, have been tasked with decreasing runoff …
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Evaluating the impact of the urban heat island on public health: Spatial and social determinants of heat-related mortality in New York City
… level: poor housing conditions, poverty, impervious land cover, senior's hypertension and the surface temperatures aggregated to the UHF area level during the warm season. A negative association between area-based home-ownership rates and the mortality rate ratio was the strongest …