The document discusses the wflow hydrological modeling framework. It provides an overview of wflow, describing it as an open source, distributed hydrological model based on PCRaster and Python. It outlines some of wflow's key strengths like direct links to datasets, inclusion of multiple hydrological concepts, and connections to other packages. The document also summarizes example wflow applications, current developments like the new 2018.1 release, and planned future improvements and research.
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21 May, 2018
4. About the wflow framework
The Deltares open source hydrological modelling framework
Wflow can be used freely
Key strengths:
Directly links to available (gridded) datasets
Multiple hydrological concepts included
Open Source – easy to work together / share knowledge
Strongly linked to other packages (e.g. MODFLOW (BMI),
Delft-FEWS (wflow-adapter) and OpenDA (BMI))
Source code can be downloaded from: https://github.com/openstreams/wflow/
More information: http://wflow.readthedocs.org/en/latest/
Connectivity via:
BMI
NETCDF-CF
Open standards
5. Usage of the wflow framework
Wflow is used by Universities, Research Institutes, Consultants and
Governments around the world
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6. What is wflow?
A hydrological modelling framework:
Based on PCRaster / Python framework
Fully distributed hydrological model
Different hydrological concepts available
HBV
SBM
FlexTopo (beta)
W3RA
PCRGLOB-WB
Different modules available:
Routing module
(Simple) reservoirs module
Crop growth module (LINTUL)
7. Characteristics of the wflow model
Gridded output: results can be obtained for any point in the model
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8. Characteristics of the wflow model
Grid output: multiple variables can be stored and displayed
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Snowpack simulation in Albania Runoff simulation in France
9. Example projects using wflow
“RWSOS Rivieren” (forecasting Rhine / Meuse
flows into the Netherlands)
Indonesia (nation wide water availability)
Sava Flood Forecasting System (forecasting)
Ganga River Basin Model for strategic basin planning
(IWRM)
10. Wflow product
Wflow development version:
Python scripts, Python-PCRaster framework, GDAL, …
Open source, adjust the scripts, get latest updates
Contribute!
Wflow binaries:
Pre-compiled, tested (automatic) and ready-to-use
Periodical release (2018.1 is recently released!)
Obtaining latest executables, contact: wflow@deltares.nl
Coming soon: https://oss.deltares.nl/web/wflow
Note: wflow does not come with a GUI
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12. Latest developments: Release 2018.1
Main features of the new release:
Migration to Python3 and PCRaster 4.2.0
New model concept added: pcrglob-wb
Improvements of the wflow_sbm model:
Reduced root water uptake (Feddes)
Allow soil evaporation from saturated store
Multiple soil layers (optional)
Reservoir areas added to simple reservoir
module (P and PET)
Lake modelling based on HBV-96
Minor improvements/bug fixes (240 commits in
2018)
Automatic test & build process setup
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13. Latest developments: Release 2018.1
Main features of the new release:
Migration to Python3 and PCRaster 4.2.0
Python2 no longer supported from 2020 onwards
Some packages (e.g. pandas) already unsupported
PCRaster 4.2.0 only supports Python3
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https://pythonclock.org/
14. Latest developments: Release 2018.1
Main features of the new release:
Reservoir areas added to simple reservoir module (P and PET)
Rain and evaporation calculated in reservoir module
No double counting
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Rainfall
taken care of
in reservoir
module
15. Current and upcoming developments
Activity Status
Documentation (incl. tutorials) Ongoing
Rolling out of a global wflow model Ongoing
Possible new collaborations (ao VU / NCAR) Ongoing / Open
Upgrade wflow model builder (“Hydro Earth”) Ongoing
Connection to emission / WQ model Ongoing
Improvements to the snow / glacier module Research
Improved lake / reservoir module Research
Online coupling to Delft3D FM (detailed) Research
Improved routing scheme (faster) Idea
(Online) coupling with water allocation model Idea
Expand crop growth module with more crops Idea
Develop a QGIS plugin for wflow Idea
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16. Activity Status
Documentation (incl. tutorials) Ongoing
Rolling out of a global wflow model Ongoing
Possible new collaborations (ao VU / NCAR) Ongoing / Open
Upgrade wflow model builder (“Hydro Earth”) Ongoing
Connection to emission / WQ model Ongoing
Improvements to the snow / glacier module Research
Improved lake / reservoir module Research
Online coupling to Delft3D FM (detailed) Research
Improved routing scheme (faster) Idea
(Online) coupling with water allocation model Idea
Expand crop growth module with more crops Idea
Develop a QGIS plugin for wflow Idea
Current and upcoming developments
21 May, 2018
Any other ideas / suggestions?
17. More information
Online technical documentation:
http://wflow.readthedocs.io/en/latest/
GitHub repos:
https://github.com/openstreams/wflow
More info? Sent an email:
wflow@deltares.nl
Soon also on Open Source Software portal:
https://oss.deltares.nl/web/wflow
21 May, 2018