Cargando…

Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System

Low Impact Development (LID) is an alternative to conventional urban stormwater management practices, which aims at mitigating the impacts of urbanization on water quantity and quality. Plot and local scale studies provide evidence of LID effectiveness; however, little is known about the overall wat...

Descripción completa

Detalles Bibliográficos
Autores principales: Hoghooghi, Nahal, Golden, Heather E., Bledsoe, Brian P., Barnhart, Bradley L., Brookes, Allen F., Djang, Kevin S., Halama, Jonathan J., McKane, Robert B., Nietch, Christopher T., Pettus, Paul P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6687309/
https://www.ncbi.nlm.nih.gov/pubmed/31396407
http://dx.doi.org/10.3390/w10080991
_version_ 1783442710041985024
author Hoghooghi, Nahal
Golden, Heather E.
Bledsoe, Brian P.
Barnhart, Bradley L.
Brookes, Allen F.
Djang, Kevin S.
Halama, Jonathan J.
McKane, Robert B.
Nietch, Christopher T.
Pettus, Paul P.
author_facet Hoghooghi, Nahal
Golden, Heather E.
Bledsoe, Brian P.
Barnhart, Bradley L.
Brookes, Allen F.
Djang, Kevin S.
Halama, Jonathan J.
McKane, Robert B.
Nietch, Christopher T.
Pettus, Paul P.
author_sort Hoghooghi, Nahal
collection PubMed
description Low Impact Development (LID) is an alternative to conventional urban stormwater management practices, which aims at mitigating the impacts of urbanization on water quantity and quality. Plot and local scale studies provide evidence of LID effectiveness; however, little is known about the overall watershed scale influence of LID practices. This is particularly true in watersheds with a land cover that is more diverse than that of urban or suburban classifications alone. We address this watershed-scale gap by assessing the effects of three common LID practices (rain gardens, permeable pavement, and riparian buffers) on the hydrology of a 0.94 km(2) mixed land cover watershed. We used a spatially-explicit ecohydrological model, called Visualizing Ecosystems for Land Management Assessments (VELMA), to compare changes in watershed hydrologic responses before and after the implementation of LID practices. For the LID scenarios, we examined different spatial configurations, using 25%, 50%, 75% and 100% implementation extents, to convert sidewalks into rain gardens, and parking lots and driveways into permeable pavement. We further applied 20 m and 40 m riparian buffers along streams that were adjacent to agricultural land cover. The results showed overall increases in shallow subsurface runoff and infiltration, as well as evapotranspiration, and decreases in peak flows and surface runoff across all types and configurations of LID. Among individual LID practices, rain gardens had the greatest influence on each component of the overall watershed water balance. As anticipated, the combination of LID practices at the highest implementation level resulted in the most substantial changes to the overall watershed hydrology. It is notable that all hydrological changes from the LID implementation, ranging from 0.01 to 0.06 km(2) across the study watershed, were modest, which suggests a potentially limited efficacy of LID practices in mixed land cover watersheds.
format Online
Article
Text
id pubmed-6687309
institution National Center for Biotechnology Information
language English
publishDate 2018
record_format MEDLINE/PubMed
spelling pubmed-66873092019-08-08 Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System Hoghooghi, Nahal Golden, Heather E. Bledsoe, Brian P. Barnhart, Bradley L. Brookes, Allen F. Djang, Kevin S. Halama, Jonathan J. McKane, Robert B. Nietch, Christopher T. Pettus, Paul P. Water (Basel) Article Low Impact Development (LID) is an alternative to conventional urban stormwater management practices, which aims at mitigating the impacts of urbanization on water quantity and quality. Plot and local scale studies provide evidence of LID effectiveness; however, little is known about the overall watershed scale influence of LID practices. This is particularly true in watersheds with a land cover that is more diverse than that of urban or suburban classifications alone. We address this watershed-scale gap by assessing the effects of three common LID practices (rain gardens, permeable pavement, and riparian buffers) on the hydrology of a 0.94 km(2) mixed land cover watershed. We used a spatially-explicit ecohydrological model, called Visualizing Ecosystems for Land Management Assessments (VELMA), to compare changes in watershed hydrologic responses before and after the implementation of LID practices. For the LID scenarios, we examined different spatial configurations, using 25%, 50%, 75% and 100% implementation extents, to convert sidewalks into rain gardens, and parking lots and driveways into permeable pavement. We further applied 20 m and 40 m riparian buffers along streams that were adjacent to agricultural land cover. The results showed overall increases in shallow subsurface runoff and infiltration, as well as evapotranspiration, and decreases in peak flows and surface runoff across all types and configurations of LID. Among individual LID practices, rain gardens had the greatest influence on each component of the overall watershed water balance. As anticipated, the combination of LID practices at the highest implementation level resulted in the most substantial changes to the overall watershed hydrology. It is notable that all hydrological changes from the LID implementation, ranging from 0.01 to 0.06 km(2) across the study watershed, were modest, which suggests a potentially limited efficacy of LID practices in mixed land cover watersheds. 2018-07-27 2018 /pmc/articles/PMC6687309/ /pubmed/31396407 http://dx.doi.org/10.3390/w10080991 Text en This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hoghooghi, Nahal
Golden, Heather E.
Bledsoe, Brian P.
Barnhart, Bradley L.
Brookes, Allen F.
Djang, Kevin S.
Halama, Jonathan J.
McKane, Robert B.
Nietch, Christopher T.
Pettus, Paul P.
Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System
title Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System
title_full Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System
title_fullStr Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System
title_full_unstemmed Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System
title_short Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System
title_sort cumulative effects of low impact development on watershed hydrology in a mixed land-cover system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6687309/
https://www.ncbi.nlm.nih.gov/pubmed/31396407
http://dx.doi.org/10.3390/w10080991
work_keys_str_mv AT hoghooghinahal cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT goldenheathere cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT bledsoebrianp cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT barnhartbradleyl cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT brookesallenf cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT djangkevins cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT halamajonathanj cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT mckanerobertb cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT nietchchristophert cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem
AT pettuspaulp cumulativeeffectsoflowimpactdevelopmentonwatershedhydrologyinamixedlandcoversystem