TY - JOUR ID - 1694 TI - The effect of trout farm effluents on the water quality parameters of Zaringol Stream (Golestan, Iran) based on NSFWQI and WQI indexes JO - Environmental Resources Research JA - IJERR LA - en SN - 2783-4832 AU - Mazaheri Kohanestani, Zohreh AU - Ghorbani, Rasoul AU - Hajimoradloo, Abdolmajid AU - Naeimi, Asghar AD - Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources Y1 - 2014 PY - 2014 VL - 1 IS - 2 SP - 191 EP - 201 KW - Trout Farm Effluent KW - Water quality KW - NSFWQI KW - WQI KW - Zaringol Stream DO - 10.22069/ijerr.2014.1694 N2 - The aim of this study was to assess the potential impact of Trout farm effluents on water quality of Zaringol stream based on NSFWQI and WQI indexes. Some physicochemical water quality parameters were measured from 14 point during December 2009 to September 2010 seasonality. The average value of NSFWQI is 53.21 and it shows spatial and temporal variation. The maximum value or best water quality condition (74.5) and minimum value of NSFWQI or the worst condition (50.93) belongs to point 1 and 2 respectively. Results show that the maximum and minimum of its values are estimated for autumn and spring which are 59.62 and 53.82. Similar to the NSFWQI, the WQI index changes between different stations. Point 2 and 8 have the lowest value (0.76), point 7 has the highest (1.01) one and the mean value is 0.88. Although the temporally variations of WQI are low, the highest value is calculated for summer (0.94) and the lowest one (0.81) referred to autumn Therefore, water quality status of Zaringol stream is average and need to change strategies of management and sanitary programs. It seems that effluents entering from Trout farms were located around Zaringol stream (point 2 and 8) and increasing those activities in spring and summer are reasons of the decline in water quality especially in these points. It is necessary to manage the production rates and use of wastewater treatment methods based self-purification power of Zaringol stream and environmental standards to avoid the future risks. UR - https://ijerr.gau.ac.ir/article_1694.html L1 - https://ijerr.gau.ac.ir/article_1694_64001459704dc15c8ebeeefd56d43f96.pdf ER -