The effects of watershed urbanization on the stream hydrology and riparian vegetation of Los Peñasquitos Creek, California

White, Michael D.; Greer, Keith

doi:10.1016/j.landurbplan.2004.11.015

Cited by 308 publications

(187 citation statements)

References 25 publications

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“…Additionally, there was a weak relationship between Pagriculture and water quality parameters, particularly for nutrients such as TN and TP. The results were contrary to general observations in many parts of the world [8,10,19]. Our hypothesis is that the impact of agriculture on water quality was masked by the impact of urban land use due to rapid urbanization and serious point-source pollution in the study area.…”

Section: Impacts Of Different Land Uses On Water Qualitycontrasting

confidence: 99%

“…In addition, urbanization has expanded impervious areas, which has led to faster storm flows and greater runoff volumes [57]. Impervious storm runoff washes all types of pollutants (e.g., non-point source and point source pollutants) into rivers, which increases concentrations of nutrients and other pollutants in surface waters [8]. Besides, a shortage of wastewater treatment infrastructure in suburban areas also contributes to increased nitrogen levels [58].…”

Section: Impacts Of Different Land Uses On Water Qualitymentioning

confidence: 99%

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Impacts of Land Use on Surface Water Quality in a Subtropical River Basin: A Case Study of the Dongjiang River Basin, Southeastern China

Ding

Jiang

Fu³

et al. 2015

Water

149

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Abstract:Understanding the relationship between land use and surface water quality is necessary for effective water management. We estimated the impacts of catchment-wide land use on water quality during the dry and rainy seasons in the Dongjiang River basin, using remote sensing, geographic information systems and multivariate statistical techniques. The results showed that the 83 sites can be divided into three groups representing different land use types: forest, agriculture and urban. Water quality parameters exhibited significant variations between the urban-dominated and forest-dominated sites. The proportion of forested land was positively associated with dissolved oxygen concentration but negatively associated with water temperature, electrical conductivity, permanganate index, total phosphorus, total nitrogen, ammonia nitrogen, nitrate nitrogen and chlorophyll-a. The proportion of urban land was strongly positively associated with total nitrogen and ammonia nitrogen concentrations. Forested and urban land use had stronger impacts on water quality in the dry season than in the rainy OPEN ACCESSWater 2015, 7 4428 season. However, agricultural land use did not have a significant impact on water quality. Our study indicates that urban land use was the key factor affecting water quality change, and limiting point-source waste discharge in urban areas during the dry season would be critical for improving water quality in the study area.

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Section: Impacts Of Different Land Uses On Water Qualitycontrasting

confidence: 99%

Section: Impacts Of Different Land Uses On Water Qualitymentioning

confidence: 99%

Impacts of Land Use on Surface Water Quality in a Subtropical River Basin: A Case Study of the Dongjiang River Basin, Southeastern China

Ding

Jiang

Fu³

et al. 2015

Water

149

View full text Add to dashboard Cite

show abstract

“…Bronstert et al (2007) stated that urban and farming changes decided the runoff responses based on simulation test of varied land cover conditions. Many researches (Arnold and Gibbons, 1996;White and Greer, 2006) concluded that storm runoff and peak flow increase with urban development as the proportion of impervious land increase. According to Warburtan et al (2012) and Sanyal et al (2014), spatial inhomogeneity of land use change makes local runoff responses present a more complex pattern.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the effect of urbanization on flood characteristics at catchment levels

et al. 2015

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Abstract. It is increasingly recognized that the land-use change, especially urbanization has influenced hydrological attributes intensely. Flood characteristics variation could likewise increase flood risks and pose higher demand on water management. The paper aims to evaluate temporal and spatial processes of urbanization affecting flood events at catchment level. The study sites were Xiaoqinhe catchment and its sub-catchments, a part of lower Yellow river basin in northern China. Historic cities Jinan and Zibo in the area have experienced dramatic urban expansion in recent decades, about 5 % growth of urban build-up area annually from 1990s to 2010s, and also pressed alarm for increasing flood disasters. In the paper, a HEC-HMS model was set up to simulate flood processes for different land-use scenarios. The possible effects of urbanization on flood characteristics were checked in study catchment and its sub-catchments.

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“…Such measurements or estimates are even more important for validating distributed watershed-scale models for their internal consistency as they are generally validated with measurement at the main watershed outlet only (Santhi et al 2008, Amatya andJha 2011). Furthermore, these estimates are becoming increasingly important in evaluating the infl uence of riparian vegetation ecosystem on fl ow regime characterized by stage, velocity, and discharge at various locations of the rivers and streams, especially those affected by urbanization (White and Greer 2006). Therefore, there is a great need for an improved estimation of velocity and discharge method in which fl ow resistance caused by the vegetative elements takes into consideration the infl uence of their size, shape, fl exibility and concentration on the extent of their submergence (Wilson and Horrit 2002).…”

Section: Introductionmentioning

confidence: 99%

Effects of cypress knee roughness on flow resistance and discharge estimates of the Turkey Creek watershed

Mirosław‐Świątek¹,

Amatya²

2017

Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation

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Abstract:Effects of cypress knee roughness on fl ow resistance and discharge estimates of the Turkey Creek watershed. In this study effects of cypress knees as vegetation resistance factor on Turkey Creek watershed discharge calculation were analyzed. The Turkey Creek watershed is a 3 rd order stream system draining an approximate area of 5,240 ha. It is located at 33°08' N latitude and 79°47' W longitude, approximately 60 km north-west of City of Charleston in South Carolina (USA). Turkey Creek (WS 78) is typical of other watersheds in the south Atlantic coastal plain. In the case of Turkey Creek watershed, one of the main channels and riparian fl oodplain vegetation contains cypress trees. Cypress trees live in moist or swampy regions along the Atlantic coastal plain. The cypress trees are characterized by the unique root system called knees that appear just above the water line, up to 1.2 m above water surface. This study is conducted to examine the effects of roughness of cypress knee as related to its shape (diameter and height) on discharge estimates of the Turkey Creek watershed. Hydraulic characteristics of the cypress knees were determined by fi eld inventory in selected cross-section along the main stream channel. The Pasche method was used to calculate the total Darcy-Weisbach friction factor in discharge capacity calculation of the study watershed. The results of this study show that the effect of vegetation shape in the Pasche approach is signifi cant. If the variability of vegetation stem diameter is taken into consideration in the calculations, an increase by 10-32% in the values of friction coeffi cients occurs.

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The effects of watershed urbanization on the stream hydrology and riparian vegetation of Los Peñasquitos Creek, California

Cited by 308 publications

References 25 publications

Impacts of Land Use on Surface Water Quality in a Subtropical River Basin: A Case Study of the Dongjiang River Basin, Southeastern China

Impacts of Land Use on Surface Water Quality in a Subtropical River Basin: A Case Study of the Dongjiang River Basin, Southeastern China

Analyzing the effect of urbanization on flood characteristics at catchment levels

Effects of cypress knee roughness on flow resistance and discharge estimates of the Turkey Creek watershed

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