Author(s): Abi N. Geykli; Somayeh Naderi
Linked Author(s): Abi N Geykli
Keywords: Wabash River Agricultural Runoff LULC Diffuse Pollution SWAT+
Abstract: The Wabash River Watershed in Terre Haute, Indiana, exemplifies the complex interplay between land use changes, climate shifts, and water resource management. The deterioration of soil and water quality in rural locales, particularly in areas like Terre Haute, Indiana, represents a significant environmental challenge. Prominent factors contributing to this degradation include agricultural runoff laden with nitrates and phosphates from fertilizer applications, alongside the inadequate management of septic systems. These agricultural pollutants catalyze harmful processes, such as eutrophication and the proliferation of toxic algal blooms, which result in diminished oxygen levels within aquatic ecosystems. Furthermore, sedimentation stemming from excessive stormwater runoff and the effects of deforestation amplify these issues, as they introduce a surplus of nutrients and various contaminants into local waterways, thereby exacerbating the detrimental environmental consequences. This study employs the Soil and Water Assessment Tool Plus (SWAT+) to evaluate the effects of various waste management strategies on soil health and water quality in the area. SWAT+ is a river basin scale model developed to quantify the impact of land management practices in large, complex watersheds. By simulating various waste management methodologies, the study strives to evaluate their respective influences on soil and water quality. Additionally, the research investigates the interplay between agricultural runoff and the discharge from septic systems, aiming to uncover sustainable waste management tactics that could enhance environmental health not only in Terre Haute but also in similar rural communities throughout the United States. The study is principally focused on identifying sources of contamination, modeling the movement of pollutants, and formulating best management practices (BMPs) that are specifically designed for rural contexts. Anticipated results from this research are aimed at guiding policy formulation and community initiatives, thereby contributing to the protection of soil and water resources, the enhancement of public health, and the promotion of overall environmental resilience. The investigation further considers pioneering waste management solutions, including community-driven recycling initiatives and green infrastructure designs, to alleviate the impacts of land-use alterations on water quality. By embracing a comprehensive approach, this study aspires to foster sustainable waste management strategies that emphasize both ecological integrity and the well-being of the public.
Year: 2025