GroMoPo Metadata for Yanqi Basin SWAT-MODFLOW model

Authors:

GroMoPo E. Leijnse

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gromopo_admin

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Resource

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The size of this resource is 2.3 KB

Created:

Feb 08, 2023 at 4:38 a.m.

Last updated:

Feb 08, 2023 at 4:39 a.m.

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Abstract

Increased groundwater extraction leads to the decrease of the extent of wetlands due to the implementation of a water-saving transformation project in an arid irrigation area. The application of integrated mitigation tools and strategies in China have increasing significance. In this study, an integrated approach (SWAT-MODFLOW) was followed; it is based on a soil and water assessment tool (SWAT) coupled with a modular three-dimensional finite difference groundwater model (MODFLOW). Recharge and evaporation values were estimated by SWAT and were then used to simulate groundwater in a MODFLOW model. Calibration (over the years 2000-2010) and validation (over the years 2010-2016) were performed, based on observed groundwater-level data; results showed that the combined SWAT-MODFLOW provides more accurate simulation and prediction of the dynamic changes of surface water and groundwater in irrigation areas than results from individual MODFLOW models. This method was applied to the Yanqi Basin, which is one of the most appropriate arid agricultural basins for modeling lake wetland and groundwater in China. The correlation coefficients (R-2) between the simulated and real groundwater level are 0.96 and 0.91 in SWAT-MODFLOW and MODFLOW, respectively. With the gradual increase in the extraction to 248%, 0.62 x 10(8) m(3) of groundwater discharged into the lake became -2.25 x 10(8) m(3). The lake level drops 1.3 m compared with the current year, when the groundwater exploitation increases by 10 x 10(8) m(3)/year. Overall, the results of the coupling model offer scientific evidence for agricultural water management and lake recovery, so as to enhance the water use coordination.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

China

North Latitude

42.4358°

East Longitude

86.6191°

South Latitude

41.6250°

West Longitude

85.1567°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.3390/w12113225
Depth	100
Scale	10 001 - 100 000 kmÂ²
Layers	1
Purpose	Groundwater resources
GroMoPo_ID	208
IsVerified	True
Model Code	MODFLOW;SEAWAT
Model Link	https://doi.org/10.3390/w12113225
Model Time	1961 - 2017
Model Year	2020
Model Authors	Jiang, MY; Xie, ST; Wang, SX
Model Country	China
Data Available	Report/paper only
Developer Email	jiangmy2018@lzu.edu.cn; xiesht18@lzu.edu.cn; wangshuixian@lzu.edu.cn
Dominant Geology	Model focuses on multiple geologic materials
Developer Country	Peoples R China
Publication Title	Water Use Conflict and Coordination between Agricultural and Wetlands-A Case Study of Yanqi Basin
Original Developer	No
Additional Information	This study applies MODFLOW and SWAT-MODFLOW models to simulate groundwater levels in the Yanqi Basin, China, particularly taking into consideration the characteristics of a dry climate and a deep aquifer. It is discovered that the latterâ€™s performance was superior than the formerâ€™s performance. In the SWAT model, the sensitivity analysis and parameter calibration of several important parameters affecting runoff simulation results were implemented by using SWAT-CUP software, and the model was verified by using the measured runoff from 1991 to 2017. The results showed that: for the Yanqi Basin in Xinjiang, for long time scales of the simulation of runoff values, there was good agreement with the measured values.
Integration or Coupling	Water use;Water management
Evaluation or Calibration	Dynamic water levels
Geologic Data Availability	Yes

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Yanqi Basin SWAT-MODFLOW model, HydroShare, http://www.hydroshare.org/resource/5a2a5951937542608a0a7c4dcd733f3c

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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