The spatial and temporal variation of water quality at a community garden site in an urban setting: citizen science in action

2019 ◽  
Vol 38 (2) ◽  
pp. 352-364 ◽  
Author(s):  
Martin R. Dawson ◽  
Mike Hutchins ◽  
Nuria Bachiller-Jareno ◽  
Steven Loiselle
Keyword(s):  
Water Quality ◽  
Temporal Variation ◽  
Citizen Science ◽  
Urban Setting ◽  
Spatial And Temporal Variation ◽  
Community Garden

scholarly journals Spatio-temporal variation analysis of hydrochemical characteristics in the Luanhe River Basin, China

2013 ◽  
Vol 67 (6) ◽  
pp. 1332-1338 ◽  
Author(s):  
Ying Xie ◽  
Xuyong Li ◽  
Huiliang Wang ◽  
Wenzan Li
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Temporal Variation ◽  
River Water ◽  
River Basin ◽  
Pollution Control ◽  
Spatial And Temporal Variation ◽  
Hydrochemical Characteristics ◽  
Water Pollution Control ◽  
Luanhe River Basin

The analysis of river pollution and assessment of spatial and temporal variation in hydrochemistry are essential to river water pollution control in the context of rapid economic growth and growing pollution threats in China. In this study, we focused on hydrochemical characteristics of the Luanhe River Basin (China) and evaluation of 12 hydrochemical variables obtained from 32 monitoring stations during 2001–2010. In each study year, the streams were monitored in the three hydrological periods (April, August, and October) to observe differences in the impacts of agricultural activity and rainfall pattern. Multivariate statistical methods were applied to the data set, and the river water hydrochemical characteristics were assessed using the water quality identification index (WQIIM). The results showed that parameters had variable contribution to water quality status in different months except for ammonia nitrogen (NH4-N) and total nitrogen (TN), which were the most important parameters in contributing to water quality variations for all three periods. Results of WQIIM revealed that 18 sites were classified as 'meeting standard' while the other 14 sites were classified as 'not meeting standard', with most of the seriously polluted sites located in urban area, mainly due to discharge of wastewater from domestic and industrial sources. Sites with low pollution level were located primarily in smaller tributaries, whereas sites of medium and high pollution levels were in the main river channel and the larger tributaries. Our findings provide valuable information and guidance for water pollution control and water resource management in the Luanhe River Basin.

scholarly journals Spatial and temporal variation of dissolved heavy metals in the Lijiang River China: Implication of rainstorm on drinking water quality

2021 ◽  
Author(s):  
Liming Deng ◽  
Asfandyar Shahab ◽  
He Xiao ◽  
Jieyue Li ◽  
Saeed Rad ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Drinking Water ◽  
Health Risk ◽  
Temporal Variation ◽  
High Flow ◽  
Anthropogenic Sources ◽  
Spatial And Temporal Variation ◽  
Lijiang River ◽  
Dissolved Heavy Metals

Abstract Lijiang River is an essential drinking water source and natural scenery in the Guilin City. For the first time, implications of rainstorm were taken into consideration by investigating spatial and temporal variation of dissolved heavy metals (HMs) in the Lijiang River water. A total of 68 water samples were collected during low flow (normal) season and high flow (rainstorm) season from 34 sampling sites. Dissolved HMs including Cr, Mn, Co, Cu, Zn, As, Cd, Sb, and Pb were found to meet the respective drinking water standards, while higher concentration was observed after the rainstorm season, except for Cr. Multivariate statistical analysis showed Co, Cu, Cr, Zn, Sb, and Pb in normal season are mainly controlled by anthropogenic sources. Furthermore, higher concentration of Mn, Cu, Cd, Pb, Co and Zn during the high flow season is attributed to rainstorm. The water quality index (WQI) showed good grades, and comparatively lower in rainstorm season. The results of health risk assessment revealed that HMs in Lijiang River pose limited health risk, however, As poses potential health risk during rainstorm season. It is suggested to adopt preventive measures in mining activities and industrial waste-water discharge at the river’s upstream and downstream.

scholarly journals Remote Sensing Applied to the Evaluation of Spatial and Temporal Variation of Water Quality in a Coastal Environment, Southeast Brazil

2019 ◽  
Vol 11 (05) ◽  
pp. 500-521
Author(s):  
Pedro Bettencourt ◽  
Julio Cesar Wasserman ◽  
Fábio Ferreira Dias ◽  
Paulo Roberto Alves ◽  
Dandara Bernardino Bezerra ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Temporal Variation ◽  
Coastal Environment ◽  
Spatial And Temporal Variation ◽  
Southeast Brazil

scholarly journals Spatial and Temporal Variation in Water Quality of River Benue, Nigeria

2012 ◽  
Vol 03 (08) ◽  
pp. 915-921 ◽  
Author(s):  
Ishaq S. Eneji ◽  
Agada P. Onuche ◽  
Rufus Sha’Ato
Keyword(s):  
Water Quality ◽  
Temporal Variation ◽  
Spatial And Temporal Variation

Evaluation of spatial and temporal variation in Karun River water quality during five decades (1968-2014)

2017 ◽  
Vol 27 (2) ◽  
pp. 71-75 ◽  
Author(s):  
Mehdi Ahmadmoazzam ◽  
Amal Saki Malehi ◽  
Sahand Jorfi ◽  
Bahman Ramavandi ◽  
Mehdi Ahmadi
Keyword(s):  
Water Quality ◽  
Temporal Variation ◽  
River Water ◽  
River Water Quality ◽  
Spatial And Temporal Variation ◽  
Karun River
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