Deltares/pyflwdir

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Fast methods to work with hydro- and topography data in pure Python.

Stars: 117
Forks: 40
Open beginner issues: 0
Indexed issues: 13
Avg merge: 7d 23h
Merged PRs (30d): 2

Dominant language: Python
License: MIT
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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13 open issues indexed

order_cells: a smaller upstream index, and two more orderings Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

Deltares/pyflwdir#114 · 2 comments · Opened Sep 1, 2026
Publish build artifacts to Sonatype Nexus (PyPI channel: pyflwdir-releases) Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

Deltares/pyflwdir#113 · Opened Aug 27, 2026
parallel processing of disconnected graphs Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

Deltares/pyflwdir#85 · 3 comments · Opened Apr 16, 2026
FlwdirRaster.basins(xy=(X, Y)): with output Basin + Ldd Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

Deltares/pyflwdir#75 · 2 comments · Opened Aug 14, 2025
Slope calculation as steepest downward slope on planar triangular facets Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

Deltares/pyflwdir#49 · 1 comment · Opened Jul 26, 2024
Please add D-Inf flow direction Open

enhancement wontfix

Difficulty 5/5 Over a week Newbie friendliness 25/100

Deltares/pyflwdir#48 · 3 comments · Opened Jul 26, 2024
method to get all upstream nodes for vector based flow directions Open

needs refinement

Difficulty 5/5 Over a week Newbie friendliness 20/100

Deltares/pyflwdir#40 · Opened Dec 13, 2023
river branch map Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

Deltares/pyflwdir#28 · Opened Nov 8, 2022
subgrid floodplain schematization Open

enhancement

Deltares/pyflwdir#27 · 1 assignee · Opened Nov 8, 2022
fix version number in docs Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

Deltares/pyflwdir#20 · Opened Jan 19, 2022
refactor IHU upscaling code for readability Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 42/100

Deltares/pyflwdir#5 · 2 comments · Opened Sep 24, 2021
document vector flow direction capabilities Open

documentation

Difficulty 3/5 1-2 days Newbie friendliness 20/100

Deltares/pyflwdir#4 · Opened Sep 24, 2021
support SAGA and GRASS D8 conventions Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

Deltares/pyflwdir#3 · 1 reaction · Opened Sep 24, 2021

Deltares/pyflwdir

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