Watershed 2022-03-30

⚠️This update fixes a serious vulnerability in large watershed delineation, please update to this version as soon as possible

Features

• use a robust algorithm to calculate cell area (Santini et al., 2010)
• disable buggy spatial indexing

Bugfixes

• cell height is wrong for non-square grids
• plot order does not match the order of features

Watershed 2022-03-25

Features

• Update dependencies (e.g. NumPy) and remove unnecessary dependencies

Bugfixes

• ORDER fields of large watersheds do not match their order in excel

Watershed 2022-03-18

Features

• Speed up the delineation of large watersheds based on spatial indexing
• Simplify GeoJSON objects in the Map.html to reduce storage size

Bugfixes

• The window is not in the screen center

Watershed 2022-02-24

Features

• Simplify code and reduce dependencies to improve stability
• Add hyperlink for recommended citation

Bugfixes

• Lost several tributary relocations in specific cases

Watershed 2022-01-21

Features

• Two parameters can be changed in ./source/draining/config.json, including (i) side length of search buffer (default 20km) and (ii) minimum ratio of an adjacent upstream reach to the side length (default 0.4)
• Provides a choice of data types for Flow Accumulation (acc_type), which are 32-bit unsigned integer ("u4", the default value to boost up the calculation, sufficient for 90m flow direction) and 64-bit unsigned integer ("u8", helpful in delineating extra-large watershed with 30m flow direction, such as Amazon River)

Bugfixes

• station.xlsx with extra blank rows causes watershed delineation to fail
• several gdal dependencies are missing from ./source

Watershed 2021-08-31

After decompression, double-click watershed.exe to use