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Change Log

Version 3

Revision 4.0.2

  • Bug fix affecting gfortran compiling: print plants.plt days_mat and yrs_mat as integer instead of decimals.
  • Work-around fix affecting instances where the model has an error exit code despite the model running successfully.
  • IMPORTANT: Time-series recall (point source/inlet) data is still not supported in this release. Please keep using version 3.2.x and do not upgrade yet if you need recall.

Revision 4.0.1

  • Bug fix related to codes_bsn/i_fpwet column name change giving an error on new project setups using an old swatplus_datasets.sqlite version.

Revision 4.0.0

IMPORTANT: This new version of the editor is only compatible with SWAT+ rev. 62 and later. Due to structural model changes, rev. 61 and earlier are NOT supported. Project updates are available after software update.

RECALL NOT SUPPORTED: If you are using time-series recall (point source/inlet) data, we encourage you to not update your software yet. Continue using the 3.2.x versions with SWAT+ rev. 61.0.2. Recall is moving to water allocation and is not yet ready in this release of the model. We expect it to be ready late summer 2026.

  • Compatible with SWAT+ rev. 62
  • gwflow structure updates (QSWAT+ v4.0 update is REQUIRED)
  • Add carbon module (see basin section for carbon and carbon layers)
  • Update print.prt to include gwflow options and legacy carbon options
  • Time-series recall DISABLED (see note above)

Revision 3.2.4

  • Add fix for resetting observed weather input directory when stations are removed
  • Add check for existing observed weather data to set default in the WGN import form
  • Add option for deleting existing weather stations if you already have observed data from WGN import form

Revision 3.2.3

  • Add fix for reading misnamed channel_sdmorph_mon.csv output file
  • Add check in model run for exiting prematurely without error code despite error present
  • Add background image switching for some landuses in SWAT+ Check plants tab (light mode only)
  • Bug fix: add landuse category dropdown to nutrients and plants tabs in SWAT+ Check (only when categories detected)

Revision 3.2.2

  • Update SWAT+ Check to match SWAT+ Toolbox
  • Add option to only read output files required by SWAT+ Check

Revision 3.2.1

  • Bug fix writing hru-data.hru and wetland.wet sequential IDs starting at 1 in first column

Revision 3.2.0

  • Add option to choose model revision to run
  • Comes with official current, latest development, and previous release versions
  • Allow user to more easily add their own executable
  • Re-work output file analysis to read .csv instead of .txt files and auto-populate all tables
  • Added advanced option for skipping specified files in the interface
  • Re-work project update function and separate datasets DB updating for easier management in the future
  • Change 'Slice' to 'none/barren' in the land use pie chart on the project setup screen
  • Remove option to create weather station manually; added more warning/instruction on manual edit screen
  • Include pull request #24: add netcdf climate preparation to api
  • Netcdf with SWAT+ requires a model version update that will be released at a later time
  • Include pull request #25: gwflow bypass floodplain if channel ID not found

Revision 3.1.4

  • Fix bug in weather station import: multiple blank lines in weather files were causing errors.

Revision 3.1.3

  • Fix bug in weather station manual entry form: allow any text in the box when choosing weather files.

Revision 3.1.2

  • Set minimum wd and dp in hyd-sed-lte.cha to 0.001 instead of 0.00001 due to error in values less that 0.001 introduced in 61.0.2.

Revision 3.1.1

  • Bug fix where Channels -> Hydrology & Sediment and Nutrients pages were not displaying.

Revision 3.1.0

  • Update to SWAT+ rev. 61.0.2
  • Fix printing day_lag_max in the parameters.bsn to integer.
  • Fix bug in print.prt where salts and constituents objects were duplicated.
  • Remove water allocation editor because it is outdated (will rework in a future release).
  • Update Basin Parameters -> adj_pkrt_sed, set default to 484 and recommended range to 250-800.
  • Update Hard Calibration / Parameters (cal_parms.cal) to remove unused parameters and non-zero minimums.

Revision 3.0.12

  • Add SWATPlus-IAHRIS program linkage if it is installed on Windows.
  • Remove SWAT+ LTE model option since it is discontinued.

Revision 3.0.11

  • Fix bug importing output files where gis_id is 0 and can't be determined from the object name.

Revision 3.0.10

  • When converting SWAT2012 weather files to SWAT+, change temperature extension from .tmp to .tem because Windows auto-deletes .tmp files
  • Fix a bug where pages wouldn't load for Connections -> Reservoirs -> Reservoir Hydrology and Wetland Hydrology
  • Update read_output.py to check for asterisks and too long of number in the gis_id column

Revision 3.0.9

  • Fix a bug importing from GIS where HRUs would select the wrong lum due to matching only partial names
  • Fix some connection indexing bugs when writing input files when the database ID doesn't match the row number
  • Add SWAT+ Check to main swatplus_api call

Revision 3.0.8

  • Update to allow per-user install into the user's profile directory
  • Fix bug in routing to connections/reservoirs/wetlands
  • Fix bug retrieving data from wetlands table due to gwflow conflict
  • Broken documentation link fixes

Revision 3.0.7

  • Fix bug related to data table importing.
  • Fix bug introduced in 3.0.6 during run due to typo.

Revision 3.0.6

  • Fix SWAT+ Check to allow null land use management pointer in HRUs.
  • Fix importing from GIS to allow default land use management properties when user-added non-standard plant codes to swatplus_datasets.sqlite.
  • Fix printing 0 value instead of null for missing soils values.
  • Add check for empty weather generator data and issue warning both on WGN page and the run model page.
  • Add note about future support for scenario land use update decision tables, planned for editor v3.1.
  • Add manual check for updates button.

Revision 3.0.5

  • Bug fix in some tables with broken link to Hydrology section tables
  • Bug fix listing HRU elements in Landscape Units section
  • Added copy function to LUM
  • Fix landuse matching bug in SWAT+ Check

Revision 3.0.4

  • SWAT+ Check bug fix - the the Land Use Summary tab, urban land use codes were not being looked up correctly resulting in 'NA'. Updated SWAT+ Check to refer to the name in landuse.lum, but this will require standard names in the form of "cropname_lum". More detailed warnings given when this naming lookup is unsuccessful.
  • Added default curve number values for importing SWAT+ lte projects so users do not get errors when using custom plants outside the standard table provided by SWAT+.
  • Bug fix in auto-updater. Please download this version manually.

Revision 3.0.3

  • Update tiledrain.str dist parameter default to 5m; users should manually update their project values if using tile drains
  • Bug fix in hard calibration and other pages where it wasn't allowing negative numbers
  • Bug fix in adding outflow to point source / inlets
  • Minor package updates
  • Add automatic software updates

Revision 3.0.2

  • Change default of codes.bsn i_fpwet from 2 to 1 due to model issue in rev. 61.0.1
  • Bug fix in landuse management editor where Manning's N dropdown was using CN2 values
  • Bug fix in SWAT+ Check dark mode theme where text on images was not visible
  • Added 'More Actions...' buttons to the Run and SWAT+ Check pages for easier navigation

Revision 3.0.1

  • SWAT+ model update to revision 61.0.1
  • See model release notes for a full list of changes
  • Bug fix: check for old version of swatplus_datasets.sqlite in new projects
  • SWAT+ Check and GWFLOW are not fully compatible at this time. Added a fix so that you can still run SWAT+ Check, but with a warning about some missing values in the hydrology and landscape nitrogen losses sections.
  • Bug fix: gwflow_wetlands table wasn't always created by default causing an error writing inputs.

Revision 3.0.0

  • SWAT+ model update to revision 61.0
  • See model release notes for a full list of changes
  • Added editor interfaces for groundwater flow module (GWFLOW):
  • Requires initial model setup using GWFLOW option in the latest QSWAT+
  • Found in the editor under Connection -> Groundwater Flow
  • Updated model support for constituents:
  • Fixed bugs in file format for pest/path_hru/water.ini files
  • Updated interface to simplify enabling and adding pesticides and pathogens
  • Added new salinity module and interfaces
  • Updated the soft calibration interfaces and functionality
  • Some menu reorganization:
  • Move plant communities under Land Use Management
  • Rename Initialization to Constituents
  • Add the ability to choose which model input text files to write or not write
  • Under the Run page, expand 'Choose where to write your input files' and click the 'Advanced: Customize files to write' button
  • Add a link to the model executable folder in the Run page so you can more easily update the model if needed
  • On the Run page, click the folder icon to the right of the model version number
  • Underlying code framework updates:
  • Update python rest API code to link to the project database in the request header
  • No longer use python flask restful package and just use the main flask to serve the API
  • Update to Vue.js 3.x
  • Change from Bootstrap Vue to Vuetify GUI framework
  • Various bug fixes and GUI enhancements

Version 2

Revision 2.3.3

  • Bug fix related to num_steps column in weir_res that should have been deleted.

Revision 2.3.2

  • Bug fix when creating a new project without QGIS: invalid reference to path join.

Revision 2.3.1

  • Fixed long-standing issue regarding aquifer routing. The editor was routing from aquifer to downstream channel (following through a PT in gis_routing and to the downstream channel or reservoir). Instead, we needed to take the channel/reservoir associated with the PT the aquifer routes to. So in gis_routing instead of AQU->PT->CH/RES, it should be AQU->CH/RES where CH/RES is found from AQU->PT and CH/RES->PT.

Revision 2.3

  • SWAT+ model updated to revision 60.5.7; see model revision notes for input/output changes
  • swatplus_datasets.sqlite updated to version 2.3
  • Due to the change to plants.plt, if you're updating an existing project, consider reloading your plants database with the new data through the interface. Download the plants CSV file from plus.swat.tamu.edu (browse to version 2.3), and from SWAT+ Editor go to Edit -> Databases -> Plants, click the Import button, then select the Import tab and downloaded CSV file.
  • Added basic interface for building water allocation tables. Water allocation tables are very specific to the watershed and new feature in SWAT+. We recommend working with the model development team if you are unsure. Because this is a new addition, the interface is still limited if you're trying to build a large table with many source and demand objects.
  • Bug fix in SWAT+ Check - urban codes now displayed in the Land Use Summary section

Revision 2.2.2

  • Bug fix for error received when enabling constituents and saving

Revision 2.2.1

  • Bug fix for creating new atmospheric deposition station
  • Bug fix when saving and loading scenarios

Revision 2.2

  • Complete reworking of source code to update Electron and Vue.js
  • Added interface for atmospheric deposition
  • Added a delete all button to weather stations and weather generator pages
  • HRU/Hydrology/EPCO default now set to 0.5
  • Added button to project setup page to re-import from GIS and switch between full SWAT+ and SWAT+ lte
  • Added link to SWAT+ Toolbox

Revision 2.1

  • SWAT+ input structure update for revision 60.5.4. Please see the model release notes at the top of this page for changes. Recall/Export Coefficients sections combined and renamed to Point Source / Inlet within the editor. Previous bugs in writing these inputs have been corrected.
  • Decision table editing is now available. You may edit individual tables in plain text, and there is now a guided interface for the land use management decision tables under the Land Use Management -> Management Schedules section. Use the guided builder to select from prebuilt tables from the SWAT+ development team and edit values to suit your model. Types of decision tables available include: crop rotation, tillage, fertilizer, irrigation, grazing, hay and forest cutting.
  • Observed weather data files with different starting and ending dates are now allowed through the import process. Please note that model simulation dates outside the range of your observed data will result in simulated weather.

Revision 2.0.4

  • Fix bug affecting SWAT+ lte projects during input file writing.

Revision 2.0.3

  • Minor update to add WETW and WETM land uses to swatplus_datasets.sqlite. WETW is for playas and WETM is not currently active. This requires you to update to QSWAT+ version 2.0.6.
  • Improved write time for .con (connect) files. This mostly affects larger projects or grid models.
  • Fix default location of WGN database for Linux/Mac.

Revision 2.0.1

  • Minor update to fix write time of rout_unit.def and ls_unit.def for larger projects with many HRUs.

Revision 2.0.0

We recommend using new projects created in the new QSWAT+ 2.0.x with version 2 of the editor. However, if this is not feasible, an upgrade function is available when you load your older projects in the editor. If you are using the land use management (lum.dtl) default decision tables provided in previous versions of the editor, we recommend manually updating them. The old ones have an error causing crops not to be planted. Download instructions below:

Editor feature updates:

  • New feature: save and load scenarios. After running the model, make a copy of your inputs and outputs. Any changes made after saving will not affect the saved scenario. Load the scenario back to the editor anytime from the project setup screen.
  • New feature: SWAT+ Check. Features from SWAT Check have been brought in for SWAT+ and built in directly to the editor. This is still a work in progress.
  • New feature: constituents section available under initialization data editing section. Pesticides and pathogens are available to be configured.

User interface redesigned and enhanced:

  • Project setup screen simplified and project information shown here after project is loaded.
  • SWAT+ lte (simplified model with just channels and HRUs) option now available for all projects when importing GIS.
  • Connections editing screens simplified to combine connect file inputs and properties into one.
  • Bulk editing mode now available when clicking edit on any item and using the pull down arrow on the right of the Save Changes button. Filtering available by subbasin, landuse, and HRU if applicable.
  • Table views may now be filtered.
  • Copy feature added to most sections (click on edit to an item). Does not apply to connection objects.
  • Import from GIS functionality updated. Aquifers now read from QSWAT+ routing tables, speeding up import. Users are recommended to install the most recent QSWAT+ 2.0.x for this feature.
  • Default project data updated:
  • Set values for hydrology.hyd variables perco, cn3_swf, and latq_co based on soil hyd. group and HRU slope
  • Project database structure and dataset updates to match revisions in SWAT+ rev. 60.5.x (see model revision notes linked in section above).

Version 1

Revision 1.2.3

  • Fixed bug in reading output file headers
  • Fixed bug that allowed user to run model without adding weather generator data
  • Added rotation year to management operation schedule
  • Updated SWAT+ rev. 59.3 to fix bug where it wasn't printing all IDs in lsunit output files

Revision 1.2.2

  • Fixed bug in writing aqu_catunit.ele where basin fraction would be 0 for small areas
  • Fixed various bugs while importing GIS data
  • Updated model rev. 59.3 with various bug fixes
  • Improved weather and wgn importing speed when matching to connect objects
  • Limit map view in connect pages to avoid display locking in large projects
  • When writing inputs, changed bsn_frac column to exponential format for better precision

Revision 1.2.1

  • Small fix for projects using barren land use.
  • Fixed bug when receiving an error trying to edit a row in landuse management.

Revision 1.2.0

  • Compatible with SWAT+ rev. 59.3
  • Fixes default routing in rout_unit_con for upland to floodplain surface runoff. Use fraction of area of upland routing unit surface runoff goes to channel/reservoir, the remaining goes to floodplain (see Bieger et al. JAWRA 2019). New projects only, existing projects should try re-import from GIS option.
  • Change aquifer creation. Previously created one aquifer per channel. Changed to two per subbasin (upland/floodplain), and add a deep aquifer for each outlet.
  • Fixes default principal/emergency area and volume of reservoirs. Note: new projects / re-import GIS data only. Existing projects should update values manually as needed. New defaults are described below:
    • Principal spillway area (area_ps) is set from GIS data
    • Emergency spillway area is set to area_ps * 1.15
    • Principal spillway volume is set to area_ps * 10
    • Emergency spillway volume is set to area_es * 10
  • Un-managed ponds are now retained as HRUs in QSWAT+. Imported to the editor as HRUs with wetlands inputs (wetlands_wet and hydrology_wet).
  • Update output database tables to include revisions from model rev. 59.3: channel and channel morph, reservoir, and wetlands columns.
  • Project update function available for the following data changes related to model rev. 59.1-3:
    • Update cal_parm_cal abs_max=10 and units=m for flo_min and revap_min. Add dep_bot.
    • Update aquifer_aqu default values for gw_flo=0.05, dep_wt=10, flo_min=5, revap_min=3.
    • In plant_ini_item, yrs_init changed to fraction (change values to 1 where previously 15), and biomass increased for some plants. Lc_status changed to yes for past and barr plants.
    • Update codes_bsn default values for pet=1, rtu_wq=1, wq_cha=1
  • User interface improvements:
    • Add csv import for weather generator data.
    • All related table search boxes return all possible results underneath matches to typed text.
    • Add automatic database rollback when user gets an error importing GIS or updating project.
  • Bug fixes:
    • Fixed bug when updating project from 1.0.0, a variable was not declared.
    • Fixed bug where weather stations were created but not always assigned weather data file if one exists.
    • Fixed bug when trying to import weather data located on another hard drive.
    • Fixed bug where swatplus_rest_api.exe wasn't terminating correctly when exiting the editor.

Revision 1.1.1

  • Fixes bug when importing GIS data into plant communities not in the datasets database
  • Print section usability update
  • Update automatic project database backups so multiple failed import/upgrade attempts don't overwrite the original

Revision 1.1.0

  • Upgrade function available for projects made with version 1.0.0.
  • Compatible with SWAT+ rev. 59.
  • Re-designed project setup page. If importing GIS, allow SWAT+ lte option for projects without point source or reservoir data.
  • Channels now default to using the channel-lte structure (as per SWAT+ rev. 58). Please note that this means your channel input files are different (chandeg.con) and the channel output will be in channel_sd tables.
  • New management schedule and decision table defaults determined by your HRU's plant type in plants.plt. It will use an automatic schedule based on corn (warm) or wheat (cold) plants. See the land use management documentation for more information.
  • New editor sections for: basin parameters, connections--export coefficients, recall, delivery ratio, landscape unit regions, land use management, calibration, initialization data, soils, databases, and structural.
  • Added export/import to and from CSV files for most sections.
  • Other miscellaneous usability improvements.