TY - JOUR
T1 - Anthropogenic controls from urban growth on flow regimes
AU - Mejía, Alfonso
AU - Rossel, Florian
AU - Gironás, Jorge
AU - Jovanovic, Tijana
N1 - Funding Information:
We are thankful to the three reviewers for their criticisms and suggestions which helped improve the quality of the original manuscript. The funding support provided by the Pennsylvania Sea Grant as well as the Department of Civil and Environmental Engineering at the Pennsylvania State University is gratefully acknowledged. The support from project FONDECYT 1131131 and CEDEUS-Conicyt/Fondap/15110020 is also acknowledged. The present work was partially developed within the framework of the Panta Rhei Research Initiative of the International Association of Hydrological Sciences.
Publisher Copyright:
© 2015.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Streamflow can be drastically perturbed in urban basins with important implications for stream, floodplain, and riparian ecosystems. Normally, the dynamic influence of urbanization on streamflow is studied via space-for-time substitution. Here we explicitly consider urban growth when determining the flow regime of 14 urban basins. To synthetically represent the flow regime, we employ flow duration curves (FDCs) determined using a stochastic model. The model permits derivation of FDCs that are dependent on few parameters representing climatic, land use, conventional stormwater management, and geomorphological conditions in an urban basin. We use the model, under conditions of urban growth, to assess the influence of urbanization on key model parameters and to determine different indicators of hydrologic alteration. Overall, results indicate consistent changes in the temporal evolution of the perturbed flow regimes, which in this case can largely be explained by the progressive redistribution with urban growth of water from slow subsurface runoff and evapotranspiration to fast urban runoff.
AB - Streamflow can be drastically perturbed in urban basins with important implications for stream, floodplain, and riparian ecosystems. Normally, the dynamic influence of urbanization on streamflow is studied via space-for-time substitution. Here we explicitly consider urban growth when determining the flow regime of 14 urban basins. To synthetically represent the flow regime, we employ flow duration curves (FDCs) determined using a stochastic model. The model permits derivation of FDCs that are dependent on few parameters representing climatic, land use, conventional stormwater management, and geomorphological conditions in an urban basin. We use the model, under conditions of urban growth, to assess the influence of urbanization on key model parameters and to determine different indicators of hydrologic alteration. Overall, results indicate consistent changes in the temporal evolution of the perturbed flow regimes, which in this case can largely be explained by the progressive redistribution with urban growth of water from slow subsurface runoff and evapotranspiration to fast urban runoff.
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U2 - 10.1016/j.advwatres.2015.08.010
DO - 10.1016/j.advwatres.2015.08.010
M3 - Article
AN - SCOPUS:84940949939
SN - 0309-1708
VL - 84
SP - 125
EP - 135
JO - Advances in Water Resources
JF - Advances in Water Resources
ER -