HSPEXP+ 3.2.1 release candidate

HSPEXP+3.2.1 contains the updates for HSPEXP+.

New Features:

1. Generate reports over several years but just using outputs for certain months (i.e. June through September for the River Eutrophication Standard or April through September for the Sediment Standard).
2. Reach Annual Average Budget (RCH_Ann_Avg_Budget) reports now have more descriptive info in the documentation (ConstituentBalanceReportsDocumentation.pdf)
3. Also clarified info in the Load Allocation Tables in the documentation.
   HSPEXP+3.2.1.zip

BASINS 4.5.2 Release

September 2025 update of BASINS 4.5.2 Core, using USGS OSN server for data download.
Also updates NLDAS download to 2024 specifications.

HSPEXP+ 3.2 release candidate

HSPEXP+3.2 contains the newest enhancements for HSPEXP+. This release includes segmentation options for WASP model setup including benthic segments. additional constituent balance reports for ortho phosphorus, tkn, nitrite-nitrate, and total ammonia, and complete documentation of additional constituent balance reports in Appendix A.

HSPF 12.5 Plugin for BASINS 4.5 -- July 2020

This package installs HSPF v12.5 and WinHSPF v3.1, along with the BASINS model setup plugin for HSPF. It is intended for installation on top of the BASINS 4.5 Core.

HSPF 12.5 Plugin for BASINS 4.5 -- June 2020

This package installs HSPF v12.5 and WinHSPF v3.1, along with the BASINS model setup plugin for HSPF. It is intended for installation on top of the BASINS 4.5 Core.

HSPEXP+ 3.1 beta2

HSPEXP+3.1 beta 2 contains the newest enhancements for HSPEXP+. This release includes extended documentation for the constituent balance reports in Appendix A, along with a first draft of statistics and advice for SNOW calibration. It also includes enhanced setup for WASP, writing the WASP8 version of the WASP input file.

USGS HydroToolbox 1.0

This version is the integrated groundwater and surface water hydrologic toolbox. The various analyses are grouped into legacy tools, GW tools, SW tools, and general time series tools in the menu for better organization. The Run R program is updated to work with the latest R software.

Surface Water Toolbox 1.0.5

This version updates the frequency and N day analyses to use the conditional probability adjusted statistics in both IDF and the legacy DFLOW program.

This version also contains updated Run R program that can work with the latest R software. The R.NET library is updated to search for R installation info from registry more thoroughly. Should the Run R program fail to find installed R software, a 'R_HOME' environment path variable can be created to point to a custom installed R on a user's system (for example: C:\Users\john.doe\Documents\R\R-3.6.2)

HSPEXP+ 3.1 beta1

HSPEXP+3.1 beta 1 contains the newest enhancements for HSPEXP+. This release includes extended documentation for the constituent balance reports in Appendix A, along with a first draft of statistics and advice for SNOW calibration.

HSPEXP+ 3.0 Release Candidate 3

HSPEXP+3.0 is the latest version of HSPEXP+.

This version includes a further refined model QA/QC report, plus tools for setting up WASP and BATHTUB receiving water models. Also uses 'subset by date' in Regan plots and Diurnal reports. This update fixes known problems with scatter plots and GQual constituent balance reports.