Tim D. Fletcher

TL;DR: The impact of urbanization on groundwater contributions to urban streams is poorly understood as mentioned in this paper, and the route taken by groundwater to become streamflow in urban landscapes is not generally considered, while high flows caused by impervious runoff to streams are a common focus of urban studies, and the impact of groundwater flow through the sealing of native soils with impervious surfaces and through modifications to the subsoil by constructed drainage and other infrastructure (trenches and excavations, e.g. water supply).

TL;DR: In this article, an urban typology distinguishing the common classes of urban land and water management that are hypothesized to have different effects on stream ecosystems is developed. And the importance of step changes in the hydrologic consequences of urbanization, the often-unrecognized massive increase in drainage density of urban catchments, the difficulty in setting reference condition for many cities and the resulting difficulties in comparing responses to urbanization among cities.

TL;DR: A series of statistical models are developed to predict the Total Phosphorus and Total Nitrogen removal performance of stormwater biofilters using various numbers of design characteristics and operational conditions and indicate that the model was quite sensitive to all regression coefficients and intercepts.

TL;DR: Data from extensive field measurements at seven different catchments used to determine effective sampling strategies for estimating pollutant concentrations indicate that the random sampling strategies were the most promising method in reproducing SMCs for TSS and TN, while some fixed strategies were better for estimating the SMC of E. coli.

TL;DR: The overall results demonstrated the potential of using vertical flow wetlands to remove arsenic and metals from contaminated water, having cocopeat, zeolite or limestone as supporting media.