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Turbidity and Total Suspended Solids on the Lower Cache River Watershed, AR
Carlos A Rosado-Berrios1, Jennifer L Bouldin2,3,4
1Ecotoxicology Research Facility, Arkansas State University, P.O. Box 847, State University, AR, 72467, USA. carlos.rosadobe@smail.astate.edu.
Bulletin of Environmental Contamination and Toxicology
|April 14, 2016
Summary
The Cache River Watershed shows high sedimentation and turbidity, impacting water quality. Wetlands help filter sediments in the Bayou DeView tributary, but the main channel contributes significantly more pollution.
Area of Science:
- Environmental Science
- Hydrology
- Ecology
Background:
- The Cache River Watershed (CRW) in Arkansas contains vital bottomland hardwood forests.
- Despite wetlands' known water quality benefits, the Cache River is impaired by sedimentation and turbidity.
Purpose of the Study:
- To measure turbidity and total suspended solids (TSS) in the lower CRW.
- To assess sediment loading contributions from the Cache River main channel and Bayou DeView tributary.
Main Methods:
- Turbidity and TSS were measured at seven sites in the lower CRW, with six on the Bayou DeView tributary.
- Sediment loading was calculated using data from high precipitation events and mean TSS values.
Main Results:
- Turbidity ranged from 1.21 to 896 NTU, and TSS from 0.17 to 386.33 mg/L over three years.
- An increasing trend in turbidity and TSS was observed over the study period.
- A decreasing trend in turbidity and TSS was noted from upstream to downstream in the Bayou DeView tributary.
- The Cache River main channel contributed approximately 6.6 times more sediment than the Bayou DeView tributary.
Conclusions:
- Land use surrounding the river channel significantly impacts water quality.
- Wetlands along the Bayou DeView channel act as effective sediment filters.
- The Cache River main channel is a major source of sediment pollution in the watershed.
Keywords:
Bottomland hardwood forestsCache River, ArkansasSediment loadingTotal suspended solidsTurbidityWater quality impairmentMore Related Videos
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