2020
DOI: 10.5194/gmd-13-3267-2020
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Development of the Community Water Model (CWatM v1.04) – a high-resolution hydrological model for global and regional assessment of integrated water resources management

Abstract: Abstract. We develop a new large-scale hydrological and water resources model, the Community Water Model (CWatM), which can simulate hydrology both globally and regionally at different resolutions from 30 arcmin to 30 arcsec at daily time steps. CWatM is open source in the Python programming environment and has a modular structure. It uses global, freely available data in the netCDF4 file format for reading, storage, and production of data in a compact way. CWatM includes general surface and groundwater hydrol… Show more

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Cited by 119 publications
(114 citation statements)
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References 124 publications
(187 reference statements)
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“…The coupled MODFLOW model has a relatively higher spatial resolution of 500 m to distinguish different areas of GW recharge and capillary rise (i.e., where GW levels in MODFLOW grid cells reach the lower soil layer of CWatM) 53 . In this study, we used one layer of the confined aquifer with an initial thickness of 200 m, which was estimated from contour maps of GW aquifer thickness in Beijing.…”
Section: Methodsmentioning
confidence: 99%
“…The coupled MODFLOW model has a relatively higher spatial resolution of 500 m to distinguish different areas of GW recharge and capillary rise (i.e., where GW levels in MODFLOW grid cells reach the lower soil layer of CWatM) 53 . In this study, we used one layer of the confined aquifer with an initial thickness of 200 m, which was estimated from contour maps of GW aquifer thickness in Beijing.…”
Section: Methodsmentioning
confidence: 99%
“…Six GHMs perform calibration of their hydrological components, using different approaches (Table 6). CWatM calibrates monthly or daily streamflow for 12 catchments using the Distributed Evolutionary Algorithms in Python (DEAP) approach (Burek et al, 2020), while WaterGAP2 uses a beta function for the calibration of 1,319 gauged hydrological stations considering runoff as a nonlinear function of soil moisture. WaterGAP2 uses a runoff coefficient and two correction factors to calibrate the simulated and observed streamflow (Müller Schmied et al, 2014).…”
Section: Key Characteristics Of the Global Water Modelsmentioning
confidence: 99%
“…The Community Water Model (CWatM) is a large-scale integrated hydrological model, which encompasses general surface and groundwater hydrological processes, including human hydrological activities such as water use and reservoir regulation (Burek et al, 2019). CWatM takes six land cover classes into account and applies the tile approach.…”
Section: Cwatmmentioning
confidence: 99%