The Beshar River is one aquatic ecosystem,which is
affected by pollutants. This study was conducted to evaluate the
effects of human activities on the water quality of the Beshar river.
This river is approximately 190 km in length and situated at the
geographical positions of 51° 20' to 51° 48' E and 30° 18' to 30° 52'
N it is one of the most important aquatic ecosystems of Kohkiloye
and Boyerahmad province next to the city of Yasuj in southern Iran.
The Beshar river has been contaminated by industrial, agricultural
and other activities in this region such as factories, hospitals,
agricultural farms, urban surface runoff and effluent of wastewater
treatment plants. In order to evaluate the effects of these pollutants
on the quality of the Beshar river, five monitoring stations were
selected along its course. The first station is located upstream of
Yasuj near the Dehnow village; stations 2 to 4 are located east, south
and west of city; and the 5th station is located downstream of Yasuj.
Several water quality parameters were sampled. These include pH,
dissolved oxygen, biological oxygen demand (BOD), temperature,
conductivity, turbidity, total dissolved solids and discharge or flow
measurements. Water samples from the five stations were collected
and analysed to determine the following physicochemical
parameters: EC, pH, T.D.S, T.H, No2, DO, BOD5, COD during 2008
to 2009. The study shows that the BOD5 value of station 1 is at a
minimum (1.5 ppm) and increases downstream from stations 2 to 4 to
a maximum (7.2 ppm), and then decreases at station 5. The DO
values of station 1 is a maximum (9.55 ppm), decreases downstream
to stations 2 - 4 which are at a minimum (3.4 ppm), before increasing
at station 5. The amount of BOD and TDS are highest at the 4th
station and the amount of DO is lowest at this station, marking the
4th station as more highly polluted than the other stations. The
physicochemical parameters improve at the 5th station due to
pollutant degradation and dilution. Finally the point and nonpoint
pollutant sources of Beshar river were determined and compared to
the monitoring results.
[1] APHA., "Standard Methods for the Examination of Water and
Wastewater,"18th ed., American Public Health Association,
Washington, DC. Bulut, V.N., 1998
[2] Chau, K.W., Chuntian, C. & Li, C.W , "Knowledge management system
on flow and water quality modelin,"g Journal of Expert Systems with
Applications, 22(4) :321-330, 2002
[3] Sohngen, B. and Yeh, C.Y. "Total Maximum Daily Loads ,"
(TMDLs).http://ohioline.osu.edu/ae-fact/0007.html, 1999
[4] United States. " Environmental Protection Agency , Quality Criteria for
Water ," EPA 440/5-86-001,1986
[5] Diersing, Nancy "Water Quality: Frequently Asked Questions ,"PDA.
NOAA,2009
[6] United States Environmental Protection Agency (EPA) , Washington,
DC. "Water Quality Standards Review and Revision,",2006
[1] APHA., "Standard Methods for the Examination of Water and
Wastewater,"18th ed., American Public Health Association,
Washington, DC. Bulut, V.N., 1998
[2] Chau, K.W., Chuntian, C. & Li, C.W , "Knowledge management system
on flow and water quality modelin,"g Journal of Expert Systems with
Applications, 22(4) :321-330, 2002
[3] Sohngen, B. and Yeh, C.Y. "Total Maximum Daily Loads ,"
(TMDLs).http://ohioline.osu.edu/ae-fact/0007.html, 1999
[4] United States. " Environmental Protection Agency , Quality Criteria for
Water ," EPA 440/5-86-001,1986
[5] Diersing, Nancy "Water Quality: Frequently Asked Questions ,"PDA.
NOAA,2009
[6] United States Environmental Protection Agency (EPA) , Washington,
DC. "Water Quality Standards Review and Revision,",2006
@article{"International Journal of Earth, Energy and Environmental Sciences:53244", author = "Fardin Boustani and Mohammah Hosein Hojati", title = "Pollution and Water Quality of the Beshar River", abstract = "The Beshar River is one aquatic ecosystem,which is
affected by pollutants. This study was conducted to evaluate the
effects of human activities on the water quality of the Beshar river.
This river is approximately 190 km in length and situated at the
geographical positions of 51° 20' to 51° 48' E and 30° 18' to 30° 52'
N it is one of the most important aquatic ecosystems of Kohkiloye
and Boyerahmad province next to the city of Yasuj in southern Iran.
The Beshar river has been contaminated by industrial, agricultural
and other activities in this region such as factories, hospitals,
agricultural farms, urban surface runoff and effluent of wastewater
treatment plants. In order to evaluate the effects of these pollutants
on the quality of the Beshar river, five monitoring stations were
selected along its course. The first station is located upstream of
Yasuj near the Dehnow village; stations 2 to 4 are located east, south
and west of city; and the 5th station is located downstream of Yasuj.
Several water quality parameters were sampled. These include pH,
dissolved oxygen, biological oxygen demand (BOD), temperature,
conductivity, turbidity, total dissolved solids and discharge or flow
measurements. Water samples from the five stations were collected
and analysed to determine the following physicochemical
parameters: EC, pH, T.D.S, T.H, No2, DO, BOD5, COD during 2008
to 2009. The study shows that the BOD5 value of station 1 is at a
minimum (1.5 ppm) and increases downstream from stations 2 to 4 to
a maximum (7.2 ppm), and then decreases at station 5. The DO
values of station 1 is a maximum (9.55 ppm), decreases downstream
to stations 2 - 4 which are at a minimum (3.4 ppm), before increasing
at station 5. The amount of BOD and TDS are highest at the 4th
station and the amount of DO is lowest at this station, marking the
4th station as more highly polluted than the other stations. The
physicochemical parameters improve at the 5th station due to
pollutant degradation and dilution. Finally the point and nonpoint
pollutant sources of Beshar river were determined and compared to
the monitoring results.", keywords = "Beshar river, physicochemical parameter, waterpollution, Yasuj", volume = "4", number = "10", pages = "441-4", }