Training Room 1 East/West (1st floor across from cafe)
“MODFLOW - One Water Hydrologic Flow Model” Workshop
In cooperation with the
United States Geological Survey
(California Water Science Center)
Tuesday May 31 through Friday June 3, 2016 from 9:00 to 4:30 pm
CalEPA Building, 1001 I Street (10th and I)
Location Map and Directions
Workshop Fee: $200 for CWEMF members, $300 for non-members, and $50 for students.
The four day workshop will cover the features and use of the USGS’s One-Water Hydrologic Flow Model (MF-OWHM) for
analysis of conjunctive use and sustainability of water resources. The workshop will cover current conjunctive use and
sustainability applications, how to use the new features of MF-OWHM, and selected support analysis tools. A simple set of
problems will be used to demonstrate the utility of the supply-and-demand framework that is used to perform resource analysis
. Finally the workshop will introduce the new features that will be part of the MF-OWHM version 2 release that will be available next year (2017).
MF-OWHM allows the simulation, analysis, and management of human and natural water movement within a physically-based
supply-and-demand framework. A unique feature of MF-OWHM is that it allows the simulation of head-dependent flows, flow
-dependent flows, and deformation-dependent flows that collectively affect conjunctive use and sustainability of water
resources. This framework includes groundwater, surface-water, and landscape budgets within water-accounting regions that
include climate, land usage, water deliveries, water transfers, and estimation of unknown ground water pumping, recharge,
runoff, and surface-water deliveries. This also includes surface-water and groundwater allocations as resource limits needed
for sustainability analysis. The supply-constrained and demand-driven framework combined with the linkages among packages
and processes provides complete relations of water use and movement, and helps you keep all water within the model, thus
accounting for "all of the water everywhere and all of the time." While MF-OWHM has many options, it can be used simply and
can be used to assess either data rich or data poor basins. MF-OWHM is based on the MODFLOW-2005 (MF) with the Farm
Process (FMP3), and is the latest, fastest, and most complete version of MODLFOW available from the USGS that
incorporates all the other features available in the separate versions of the MODFLOW suite (NWT, SWR, SWI, LGR) into one
integrated hydrologic flow model. It also includes many original code improvements to MF-2005, as well as many new features
that make building, calibrating, and maintaining models easier. MF-OWHM extends the capabilities of Local Grid Refinement
(LGR) for embedded models to use the Farm Process and Streamflow Routing within embedded grids. MF-OWHM also now
includes new linkages as well as new features such as the Surface-Water Routing Process (SWR), Seawater Intrusion (SWI),
Multi-Node Wells (MNW2), and Riparian Evapotranspiration (RIP-ET). MF-OWHM not only contains all the previously available
solvers but also new solvers such as Newton-Raphson (NWT) and the nonlinear preconditioned conjugate gradient (PCGN).
The workshop will introduce a new way to analyze conjunctive use and sustainability of water resources in a holistic and complete context of the entire simulated hydrosphere.
Randall T. Hanson, USGS Research Hydrologist
Scott Boyce, USGS Hydrologist
Jonathan Traum, USGS Hydrologist
Computer Requirements: Attendees will use their own laptops pre-loaded with MF-OWHM software and example problems.
Links and instructions to download and install the software will be provided approximately one week prior to the workshop.
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