Davids Engineering has developed methods to incorporate low-cost satellite imagery analysis into spatially-distributed water balance models to develop time series data of irrigation demands and return flows to support the management of surface water and groundwater supplies. Our modeling approach is customized to our clients’ needs, following industry-standard best practices.
Integrated Water Flow Model (IWFM): IWFM is an integrated groundwater and surface water modeling system used for water resources management and planning. IWFM-based model applications have been used to support Groundwater Sustainability Plan (GSP) development for Subbasins across California. At Davids Engineering, we have proven experience developing and refining the surface layer of IWFM models to ensure that surface water supplies and water use are accurately represented.
IWFM Demand Calculator (IDC): IDC is a key component of the IWFM that we use to model flows through the root zone in a physically-base daily or monthly water balance. At Davids Engineering, we use IDC and other root zone water balance tools to support water budget analyses and accurately and consistently track crop evapotranspiration, deep percolation, and other fluxes through the root zone.
Remote Sensing Root Zone (RSRZ) model: Satellite remote sensing techniques are powerful analysis tools that allow crop water use to be quantified across large, diverse landscapes using satellite imagery. Application of remote sensing combined with daily remote sensing-based root zone (RSRZ) water balance modeling allows us to make reliable, consistent estimates of surface water interactions with the groundwater system in the absence of more detailed, ground-based information.