LARGE AREA HYDROLOGIC MODELING AND ASSESSMENT PART I: MODEL DEVELOPMENT 1
Abstract
ABSTRACT: A conceptual, continuous time model called SWAT (Soil and Water Assessment Tool) was developed to assist water resource managers in assessing the impact of management on water supplies and nonpoint source pollution in watersheds and large river basins. The model is currently being utilized in several large area projects by EPA, NOAA, NRCS and others to estimate the off‐site impacts of climate and management on water use, non‐point source loadings, and pesticide contamination. Model development, operation, limitations, and assumptions are discussed and components of the model are described. In Part II, a GIS input/output interface is presented along with model validation on three basins within the Upper Trinity basin in Texas.
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The SWAT can simulate changes in runoff, sedimentation, and nutrients in the watershed due to alterations in land use, soil types, and land management conditions.
“The SWAT can simulate changes in runoff, sedimentation, and nutrients in the watershed due to alterations in land use, soil types, and land management conditions (Arnold et al., 1998).”
From Future Hydrological Drought Analysis Considering Agricultural Water Withdrawal Under SSP Scenarios (2022) · cites this paper as Arnold et al., 1998
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“SWAT is a conceptual, time-continuous and semi-distributed hydrological and watershed-scale model [59] that was initially developed by the United States Department of Agriculture (USDA) Research Service and Texas A&M University to predict changes in landscape management practices on water, sediment and chemical yield…”
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Future Hydrological Drought Analysis Considering Agricultural Water Withdrawal Under SSP Scenarios
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- Authors
- Arnold, J. G., Srinivasan, R., Muttiah, R. S., & Williams, J. R.
- Affiliations
- Agricultural Research Service (US)
- Corresponding author
- Williams, J. R.
- ORCID
- Srinivasan, R.
- Venue
- JAWRA Journal of the American Water Resources Association
- Publisher
- Wiley
- Published
- 1998-02
- Volume
- 34
- Issue
- 1
- Pages
- 73-89
- ISSN
- 1093-474X (ISSN-L)
- 1752-1688
- OpenAlex
- W1983724666
- Cited by
- 7,945
- References
- 1
- Citations by year
- 2026: 441 · 2025: 529 · 2024: 540 · 2023: 572 · 2022: 559 · 2021: 537 · 2020: 492 · 2019: 445 · 2018: 470 · 2017: 417 · 2016: 381 · 2015: 375 · 2014: 344 · 2013: 334 · 2012: 286
- FWCI
- 32.59
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- JAWRA Journal of the American Water Resources Association (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Hydrology and Watershed Management Studies
- Physical Sciences › Earth and Planetary Sciences › Geology › Environmental Monitoring and Data Management
- Physical Sciences › Environmental Science › Environmental Engineering › Soil Moisture and Remote Sensing
- Keywords
- SWAT model, watershed modeling, large river basins, non-point source pollution, pesticide contamination, water consumption, climate impacts on water resources, land management impacts, model development, model validation
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