Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2013.10.038 |
Hydrologic modeling analysis of a passive, residential rainwater harvesting program in an urbanized, semi-arid watershed | |
Walsh, Thomas C.; Pomeroy, Christine A.; Burian, Steven J. | |
通讯作者 | Walsh, Thomas C. |
来源期刊 | JOURNAL OF HYDROLOGY
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ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2014 |
卷号 | 508页码:240-253 |
英文摘要 | This paper presents the results of a long-term, continuous hydrologic simulation analysis of a watershed-scale residential rainwater harvesting (RWH) program in the Chollas Creek watershed, San Diego, California, USA. The U.S. Environmental Protection Agency’s Storm Water Management Model (SWMM) simulated rainfall-runoff responses for variations in a RWH network, including the RWH unit storage size, the number of implementing households, the amount of time before a unit is allowed to release captured runoff (i.e. drain delay), and the time it takes for the unit to drain (i.e. coefficient of discharge). Comparison of results found reductions to increase linearly with capacity and implementation. Maximum long-term watershed volumetric reductions between 10.1% and 12.4% were observed for the period of analysis (1948-2011) with a range of RWH storage sizes (227 L barrels to 7571 L cisterns). The ratio of overflow to underdrain flow, ranging from 5.17 to 0.014(227-7571 L), exhibits the ability of cisterns to fully capture the majority of annual and long-term events. Sensitivity analysis found regional precipitation characteristics and disconnection of rooftop runoff to impact long-term watershed reduction potential more so than available RWH capacity. Drain delay control and dry duration time increased reduction variability with cisterns, though long-term reductions were not significantly impacted. Normalization of net present value (NPV) to volumetric reductions yielded a RWH unit cost of $0.20-$1.71 per 1000 L of watershed runoff reduced on average per year. Minor variations in cost based on the extent of watershed implementation highlights the potential to incrementally institute RWH programs. For the case study location, the 227-L rain barrel provided the greatest cost-effectiveness, reducing an average 6500 L of runoff per dollar invested for the analysis period. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Stormwater Urban hydrology Low impact development Rainwater harvesting |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000332135600020 |
WOS关键词 | LOW IMPACT DEVELOPMENT ; STORMWATER MANAGEMENT ; LAND-USE ; RUNOFF ; SCALE ; BENEFITS ; DESIGN |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183411 |
作者单位 | Dept Civil & Environm Engn, Salt Lake City, UT 84112 USA |
推荐引用方式 GB/T 7714 | Walsh, Thomas C.,Pomeroy, Christine A.,Burian, Steven J.. Hydrologic modeling analysis of a passive, residential rainwater harvesting program in an urbanized, semi-arid watershed[J],2014,508:240-253. |
APA | Walsh, Thomas C.,Pomeroy, Christine A.,&Burian, Steven J..(2014).Hydrologic modeling analysis of a passive, residential rainwater harvesting program in an urbanized, semi-arid watershed.JOURNAL OF HYDROLOGY,508,240-253. |
MLA | Walsh, Thomas C.,et al."Hydrologic modeling analysis of a passive, residential rainwater harvesting program in an urbanized, semi-arid watershed".JOURNAL OF HYDROLOGY 508(2014):240-253. |
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