scholarly journals Assessment of Surface Water Resources in the Big Sunflower River Watershed Using Coupled SWAT–MODFLOW Model

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 528 ◽  
Author(s):  
Fei Gao ◽  
Gary Feng ◽  
Ming Han ◽  
Padmanava Dash ◽  
Johnie Jenkins ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Assessment Tool ◽  
Stream Water ◽  
Stress Index ◽  
River Watershed ◽  
Groundwater Levels ◽  
Growing Seasons ◽  
Surface Water Resources ◽  
Supplementary Irrigation

The groundwater level in the Big Sunflower River Watershed (BSRW) in the U.S. has declined significantly in the past 30 years. Therefore, it is imperative to assess surface water resources (SWR) availability in BSRW to mitigate groundwater use for irrigation. This research applied the coupled Soil and Water Assessment Tool–Modular Groundwater Flow model (SWAT–MODFLOW) to assess SWR in BSRW. This study aimed at: (1) Assessing the reliability of SWAT–MODFLOW in BSRW, (2) analyzing temporal and spatial variations of SWR, and (3) assessing the potential availability of SWR in BSRW. Calibration and validation results showed that SWAT–MODFLOW can well simulate streamflow and groundwater levels in BSRW. Our results showed that BSRW had lower average monthly total stream resources (MSR = 8.8 × 107 m3) in growing seasons than in non-growing seasons (MSR = 11.0 × 107 m3), and monthly pond resources (MPR from 30,418 to 30,494 m3) varied less than stream resources. The proportion of sub-basins in BSRW with stream water resources greater than 700 mm was 21% in dry years (229 to 994 mm), while this increased to 35% in normal years (296 to 1141 mm) and 57% in wet years (554 to 991 mm). The Water Stress Index (WSI) ranged from 0.4 to 2.1, revealing that most of the sub-basins in BSRW have net SWR available for irrigation. Our results suggested that surface water resources might be supplementary irrigation sources to mitigate the water resources scarcity in this region.

scholarly journals Simulating Potential Weekly Stream and Pond Water Available for Irrigation in the Big Sunflower River Watershed of Mississippi Delta

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1271
Author(s):  
Fei Gao ◽  
Gary Feng ◽  
Ying Ouyang ◽  
Johnie Jenkins ◽  
Changming Liu
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Assessment Tool ◽  
Mississippi Delta ◽  
Stream Water ◽  
Groundwater Resources ◽  
Pond Water ◽  
River Watershed ◽  
Surface Water Resources ◽  
Agriculture Irrigation

Groundwater storage and level have declined rapidly in the Big Sunflower River Watershed (BSRW) of Mississippi Delta in recent years. Farmers in this region are beginning to save groundwater resources by increasing surface water usage for agricultural irrigation. In this study, we estimated the weekly amount of surface water available in ponds and streams, determined if the weekly surface water resources are sufficient for major crop irrigation demand, and assessed how much surface water can replace groundwater for agriculture irrigation in the BSRW. The SWAT (Soil and Water Assessment Tool) model was employed to simulate the weekly water resources for 23 sub-basins from the BSRW. Results showed that weekly stream water resources (SWR), stream evaporation (SE) and water loss from the channel via transmission through the side and bottom of the channel (stream transmission, referred as ST) for BSRW during the growing seasons ranged from 20.4 to 29.4 mm, 7.4 to 14.4 mm, 1.6 to 4.5 mm and 1.1 to 1.6 mm, while pond water resources (PWR) and pond evaporation (PE) ranged from 1.9 to 2.1 mm and 0.3 to 0.5 mm. The value of SWR − (ST + SE) and PWR − PE were positive in all sub-basins, indicating that there are net surface water resources available in this region. The percentages of total groundwater usage for irrigation that could be replaced by surface water in each sub-basin every week of each month from May to September ranged from 10% to 87%. Our studies suggested that the conjunctive use of surface and groundwater for agriculture irrigation is a feasible method for groundwater sustainable management in the Mississippi Delta.

scholarly journals Assessment of a Large Subsurface Controlled Drainage and Irrigation System: III. Water chemistry of the tile effluent and its potential impact on surface water resources

2010 ◽  
Vol 44-45 (2010-2011) ◽  
pp. 11-17
Author(s):  
Michael Aide ◽  
Indi Braden ◽  
Neil Hermann ◽  
David Mauk ◽  
Wesley Mueller ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Irrigation System ◽  
Subsurface Drainage ◽  
Soil Conditions ◽  
Soil Nitrate ◽  
Controlled Drainage ◽  
Surface Water Resources ◽  
Nitrate N ◽  
Nitrate Concentrations

Abstract Controlled subsurface drainage irrigation systems promote crop productivity; however, these land management systems also allow an efficient pathway for the transport of elements from soils to surface water resources. The nitrate and macro-element effluent concentrations from tile-drainage involving a 40 ha controlled subsurface drainage irrigation system are described and compared to soil nitrate availability. Soil nitrate concentrations generally show an increase immediately after soil nitrogen fertilization practices and are sufficiently abundant to promote their transport from the soil resource to the tile-drain effluent waters. The data indicates that: (1) the transport of nitrate-N in tile-drain effluent waters is appreciable; (2) denitrification pathways effectively reduce a portion of the soil nitrate-N when the controlled drainage system establishes winter-early spring anoxic soil conditions, and (3) the best strategy for reducing nitrate-N concentrations in tile-drain effluent waters is adjusting N fertilization rates and the timing of their application. The development of bioreactors for simulating wetland conditions may further limit nitrate concentrations in surface waters because of soil drainage.

Evaluating quality of surface water resources by ANN and ANFIS networks using Sentinel-2 satellite data

2022 ◽  
Author(s):  
Mostafa Kabolizadeh ◽  
Kazem Rangzan ◽  
Sajad Zareie ◽  
Mohsen Rashidian ◽  
Hossein Delfan
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Satellite Data ◽  
Surface Water Resources ◽  
Sentinel 2
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