Alpha Update 4/25/2025

Version 0.1.0.1678-dev

Layers

  • Velocity particle tracing and static arrows (see image below).
    • To enable particle tracing, turn any result on, and click the particle-tracing button in the upper right corner of the map window (highlighted blue).
  • Fixed multiple issues with exporting 2025 meshes to be used in HEC-RAS v6.6.

Terrain

  • USGS terrain importer now stitches adjacent tiles by default, so they merge to a single tile in your RAS terrain.
  • USGS terrain importer UI updates for selection, filtering, and styling.
  • Several bug and crash fixes for the USGS terrain importer.

Solver

  • GPU Solver minor bug fixes

User Interface

  • New spreadsheet tool! (Documentation pending).
    • Copy/Paste, arrow/tab navigation, and other improvements
  • Fixed mesh editing errors assigning region/arc properties
  • DPI improvements for the main launch screen.
  • Improved error messages across the board.

Web Imagery

  • OSM text rendering performance and quality improvements.

Technical

  • Internal libraries have been updated to the latest versions: WindowsAppSDK 1.7.1, Dotnet 9.0.4, and other auxiliary libraries.

Breaking Changes

  • The .vis file had some format changes, so any checked state and custom symbology may be lost.


Alpha Update 3/17/2025

Version 0.1.0.1576-dev

Layers

  • Fixed multiple issues with exporting 2025 meshes to be used in HEC-RAS v6.6.
  • Small mesh enhancements for honoring arc cell-sizing with bias.
  • Better mesh generation error propagation - new UI to zoom to mesh generation errors.

Terrain

  • Several bug and crash fixes for the USGS terrain importer.

Web Imagery

  • OSM rendering performance improvements for polygons.

Solver

  • GPU Solver is now 10-40% faster, especially benefitting smaller models.
  • GPU flow boundary condition bugs fixed.

User Interface

  • DPI improvements for the main launch screen.
  • Improved error messages across the board.
  • Model tab (tree) layout partial update. (More coming on this soon.)
    • We're in the process of heavy design experimentation with the model tab, so expect future changes in this area.
    • Results are now sorted under plans with the same name.
    • Result maps are now a drop-down underneath the result, instead of independent layers.
    • The Project Explorer tab is still under construction.

Technical

  • Internal libraries have been updated to the latest versions: WindowsAppSDK 1.6.6, Dotnet 9.0.3, and other auxiliary libraries.

Breaking Changes

  • The .vis file had some format changes, so any checked state and custom symbology may be lost.


Alpha Update 2/21/2025

Version 0.1.0.1506-dev

Layers

  • New raster symbology editor experience. (Documentation pending)
  • Fixed several issues with exporting 2025 meshes to be used in HEC-RAS v6.6.

Editing

  • Improved performance for mesh editing and computations.
  • Improved mesh generation in quad regions.

Terrain

  • Introducing the USGS terrain importer! (Documentation pending)
  • Fixed a bug importing very large (multi GB) terrains that had to re-project on import.
  • Fixed several bugs converting USC/SI terrain imports.

Web Imagery

  • OSM now uses a disk cache, improving rendering performance and reducing network usage.

Solver

  • RAS now has a GPU solver! For more information, see this.

User Interface

  • DPI improvements for small screens in various windows.
  • Improved error messages across the board.

Technical

  • Internal libraries have been updated to the latest versions: WindowsAppSDK 1.6.5, Dotnet 9.0.2.

Alpha Update 12/20/2024

Version 0.1.0.1421-dev

Layers

  • Fixed a variety of issues with exporting 2025 meshes to be used in HEC-RAS v6.6.
    • Exporting meshes to the HEC-RAS v6 file format was silently failing. These errors are now propagated back to 2025 and shown as a toast message.
    • All (known) errors with the exporter have been fixed. If you continue to have issues exporting meshes to be used in 6.6, please let us know with a new bug report. Reminder: It's very helpful to attach your geometry when reporting meshing issues!
    • Internal v6.7 builds have improved error handling and messaging when it can't import a mesh.
  • Can now import a RAS 2025 terrain file (*.h5) into another one. This will extract any raster files from the *.h5 file and import them through the normal workflow.

Editing

  • Improved performance for modifying large polygons.
  • Middle-mouse panning now works while using the measure tool.

Web Imagery

  • Fixed some async bugs that could leave web imagery stuck on.
  • Disable web imagery if the project has a local coordinate system (no projection).

Solver

  • Fixed convergence tolerance for USC datasets that could cause some unnecessary iterations when solving boundary-conditions.

Visual

  • Fixed some DPI issues causing buttons to draw offscreen on the New Project page.
    • We recognize many parts of the UI are still not laying out correctly for low-resolution or zoomed-in displays. More fixes are coming.

Technical

  • Internal libraries have been updated to the latest versions: Dotnet 9, and WindowsAppSDK 1.6.3.
  • Now sending loaded module/process state when you report a bug. This should help us catch some of the trickier installation errors.

Alpha Update 11/13/2024

Version 0.1.0.1384-dev

  • Paste polylines and polygons into your conceptual mesh! Docs
  • Click+Drag while using the Edit Tool to enter selection mode
  • Ctrl+Click to insert node where arcs intersect. Docs
  • Auto Fix command to fix common conceptual mesh errors. Docs
    • Detects intersections, coincident arcs, and other common errors to create a (mostly) correct conceptual mesh.
  • Improved reporting for conceptual mesh errors
    • Multiple new classes of errors detected, including duplicated/coincident nodes and 0-area regions
  • Many performance improvements for large conceptual meshes
  • Much improved editing, importing, and hit-testing operations
  • Improved mesh generation, particularly with quad-quad boundaries
  • Minor styling updates throughout the UI
    • Updated Context Menus
    • New Icons
  • Extra safety checks for saving files and creating backups
  • Restyled Importers
    • OSM background maps on by default
    • Reworked terrain importer
  • Improved logging and error reporting
  • Quick edit pickers (map annotations) no longer prevent scrolling
  • UI performance improvements 
    • Prevent icon double loading
    • Delayed loading of unused UI elements and assets
  • Edit tool symbology updates

Alpha Update 10/17/2024

Version 0.1.0.1323-dev

  • Fixed an issue with the updater that was introduced in 0.1.0.1295
    • If you are on version 0.1.0.1295, please download another copy to fix the updater.
  • Improved Conceptual mesh rendering and editing tools in a variety of scenarios.
  • Better conceptual mesh error reporting and messaging.
  • Fixed a scenario where mouse-hover on terrain layer can return incorrect values.
  • Fixed show arc/region labelling indices.
  • Fixed terrain tooltips for negative elevation values.
  • Misc. bug and crash fixes.

Alpha Update 10/8/2024

Version 0.1.0.1295-dev

  • Added extra validation for creating new projects - this should detect and warn when the user's default project directory isn't writeable, and prompt to choose a new one.
  • Added new data validation, error trapping, and user notifications based on submitted bugs.
  • Fixed some map window crashes that could occur when rapidly zooming in/out.
  • Cleaned up spatial boundary conditions UI that isn't ready/working yet.
  • Improved model file discovery (geometry/boundary-condition/plan) that wasn't validating properly.
  • New initial launch screen!

Alpha Update 10/2/2024

Version 0.1.0.1266-dev

  • Fixed an issue with time-zone localization that affected users that were in time-zones east (+X hours) of UTC. (This caused crashes opening Boundary Condition and Plan dialogs in particular).
  • Fixed a variety of charting issues and crashes.
  • Improved error logging (these bug reports have been a big help, keep them coming!)
  • Improved UI validation in GIS Mode (Reminder: You need to create a New Project to add a RAS terrain, etc.)
  • Misc. error and safety checks.

Alpha 1 Release 9/30/2024

This is our first publicly available release of RAS 2025! See our Quick Start Guide to get started.