Impacts of urban drainage systems on stormwater hydrology: Rocky Branch Watershed, Columbia, South Carolina
學年 109
學期 1
出版（發表）日期 2020-09-01
作品名稱 Impacts of urban drainage systems on stormwater hydrology: Rocky Branch Watershed, Columbia, South Carolina
作品名稱（其他語言）
著者 Logan D. Ress; Chen-Ling J. Hung; L. Allan James
單位
出版者
著錄名稱、卷期、頁數 Journal of Flood Risk Management 13 (3), e12643
摘要 Increases in impervious surfaces and land‐use changes associated with urbanization have long been the focus of urban hydrological research. However, studies and calculations that consider impervious surfaces alone do not encompass all factors that influence urban hydrologic response, as alternative urban structures may have a substantial effect on stormflow. This study examines several descriptors to improve estimations of hydrologic impacts of urbanization in small watersheds. Configurations of drainage densities that include storm sewers were computed for the highly urbanized Rocky Branch Watershed. Storm sewer configurations resulted in an approximate tripling of the drainage density. In addition, rainfall and stormflow data were analyzed to compare the hydrologic response of two subcatchments with varying percentages of impervious areas and drainage densities. The subcatchment with a higher percentage of impervious area produced significantly (p < .01) higher runoff volumes with an average runoff coefficient of 0.446, while the subcatchment with higher storm sewer densities displayed significantly shorter lag times of 9 min. In this case, the percentage of impervious area increased the volume of runoff but, storm sewer densities accelerated hydrologic responses, suggesting that hydrologically relevant metrics should be considered to accurate assess flood risk alternatives.
關鍵字 flood generation; hydrology; rainfall runoff; urban drainage
語言 en_US
ISSN 1753-318X
期刊性質 國外
收錄於 SCI
產學合作 國外
通訊作者 L. Allan James
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/119422 )

SDGS 優質教育,潔淨水與衛生,產業創新與基礎設施,永續城市與社區,夥伴關係