Multiscale Variability of Hydrological Responses in Urbanizing Watershed

Anthropically-induced land-use/land cover (LULC) changes create an imbalance between water and energy fluxes by affecting rainfall-runoff partitioning. This alters the catchment’s flow regime, generating increased highs reduced low flows, triggering socio-economic environmental damages. The focus of this study is two-fold (i) to quantify hydrological induced in urbanizing watershed (ii) analyze streamflow variability generation extremes (high- low-flow), using soil assessment tool (SWAT) for Peachtree Creek, USA. results indicate that change LULC significantly influences availability moisture, ET, contribution groundwater flow. It observed variations these processes regulate from surface sub-surface sources, thus extreme flows. spatio-temporal analysis, response changes, indicates urbanization affects baseflow, its depends on degree predominant land-use class subwatersheds, seasonal baseflow streams depend ET timing magnitude outflow streams. These lead excess/deficit regions, increasing susceptibility floods during heavy precipitation events reducing reliability dry periods. Thus, watershed, regime may not always be a function runoff, but will modified dynamics. Further, shows model parameters can provide insight into implications regimes. Evaluating basin balance paramount deriving any management operations restoration activities. also outlines significance analyzing spatial temporal scale managing resources reduce damage lives properties.