Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA
Worldwide, sedimentation represents a major problem for reservoir and dam management due to the related environmental and economic consequences. However, reservoir sedimentation can be significantly mitigated by controlling the rates of sediment loss across a watershed. This article uses a case stud...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2018-09-01
|
| Series: | International Soil and Water Conservation Research |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095633917303088 |
| _version_ | 1797283561655500800 |
|---|---|
| author | Dagbegnon Clement Sohoulande Djebou |
| author_facet | Dagbegnon Clement Sohoulande Djebou |
| author_sort | Dagbegnon Clement Sohoulande Djebou |
| collection | DOAJ |
| description | Worldwide, sedimentation represents a major problem for reservoir and dam management due to the related environmental and economic consequences. However, reservoir sedimentation can be significantly mitigated by controlling the rates of sediment loss across a watershed. This article uses a case study to highlight an assessment technique for sustaining effective soil conservation strategies by providing an insight into the spatial variability of sediment loss rates at the watershed scale. The assessment method employs the Soil and Water Assessment Tool (SWAT) and the Modified Universal Sediment Loss Equation (MUSLE) to quantify sediment losses in a case study for the Somerville reservoir, located in Texas. The SWAT model was employed to simulate upstream inflows in the studied reservoir watershed. The goodness-of-fit analyses suggested a realistic representation of the watershed behavior and satisfactory values of Nash-Sutcliffe Efficiency were obtained during the calibration and validation stages (0.76 ≤ NSE ≤ 0.69). Then the calibrated SWAT was used to generate MUSLE estimates of soil losses under undammed conditions. A weight-average formulation was developed to evaluate the rates of sediment loss at the sub-basin level. Meaningful contrasts were outlined between the sub-basins located at the downstream, the midstream, and the upstream. The study was able to pinpoint sub-basins with critical needs of soil conservation (sediment loss > 4 t/ha/year). Overall, the outcomes of the case study demonstrated the value of the methodology and that the outcomes may be used to address the complex problem of sedimentation in watersheds with reservoirs. Keywords: Reservoir watershed, Sedimentation, Runoff, SWAT, Soil conservation |
| first_indexed | 2024-03-07T17:33:27Z |
| format | Article |
| id | doaj.art-eaca07af17774ea2afb35b81c0c487ad |
| institution | Directory Open Access Journal |
| issn | 2095-6339 |
| language | English |
| last_indexed | 2024-03-07T17:33:27Z |
| publishDate | 2018-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Soil and Water Conservation Research |
| spelling | doaj.art-eaca07af17774ea2afb35b81c0c487ad2024-03-02T17:34:28ZengKeAi Communications Co., Ltd.International Soil and Water Conservation Research2095-63392018-09-0163222229Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USADagbegnon Clement Sohoulande Djebou0Department of Biological and Agricultural Engineering, Texas A&M University, Scoates Hall, CE-TTI Bldg 303H, 3135 TAMU, Spence Street, College Station, TX 77843, USA; Texas A&M Transportation Institute - Texas A&M University, CE-TTI Bldg 303H, 3135 TAMU, Spence Street, College Station, TX 77843, USA; Corresponding author at: Department of Biological and Agricultural Engineering, Texas A&M University, Scoates Hall, CE-TTI Bldg 303H, 3135 TAMU, Spence Street, College Station, TX 77843, USA.Worldwide, sedimentation represents a major problem for reservoir and dam management due to the related environmental and economic consequences. However, reservoir sedimentation can be significantly mitigated by controlling the rates of sediment loss across a watershed. This article uses a case study to highlight an assessment technique for sustaining effective soil conservation strategies by providing an insight into the spatial variability of sediment loss rates at the watershed scale. The assessment method employs the Soil and Water Assessment Tool (SWAT) and the Modified Universal Sediment Loss Equation (MUSLE) to quantify sediment losses in a case study for the Somerville reservoir, located in Texas. The SWAT model was employed to simulate upstream inflows in the studied reservoir watershed. The goodness-of-fit analyses suggested a realistic representation of the watershed behavior and satisfactory values of Nash-Sutcliffe Efficiency were obtained during the calibration and validation stages (0.76 ≤ NSE ≤ 0.69). Then the calibrated SWAT was used to generate MUSLE estimates of soil losses under undammed conditions. A weight-average formulation was developed to evaluate the rates of sediment loss at the sub-basin level. Meaningful contrasts were outlined between the sub-basins located at the downstream, the midstream, and the upstream. The study was able to pinpoint sub-basins with critical needs of soil conservation (sediment loss > 4 t/ha/year). Overall, the outcomes of the case study demonstrated the value of the methodology and that the outcomes may be used to address the complex problem of sedimentation in watersheds with reservoirs. Keywords: Reservoir watershed, Sedimentation, Runoff, SWAT, Soil conservationhttp://www.sciencedirect.com/science/article/pii/S2095633917303088 |
| spellingShingle | Dagbegnon Clement Sohoulande Djebou Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA International Soil and Water Conservation Research |
| title | Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA |
| title_full | Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA |
| title_fullStr | Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA |
| title_full_unstemmed | Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA |
| title_short | Assessment of sediment inflow to a reservoir using the SWAT model under undammed conditions: A case study for the Somerville reservoir, Texas, USA |
| title_sort | assessment of sediment inflow to a reservoir using the swat model under undammed conditions a case study for the somerville reservoir texas usa |
| url | http://www.sciencedirect.com/science/article/pii/S2095633917303088 |
| work_keys_str_mv | AT dagbegnonclementsohoulandedjebou assessmentofsedimentinflowtoareservoirusingtheswatmodelunderundammedconditionsacasestudyforthesomervillereservoirtexasusa |