DSM2 V8.2.0 employs the daily DCD channel depletions instead of the monthly values produced by DICU as in the previous release.

DSM2 V8.2.0b1 release applies the daily DCD v1.0 channel depletions. Main differences with DSM2 V8.1.2 release: 1. DCD v1.0 daily channel depletions, including diversions, drainages, and seepages, replace the monthly values produced by DICU. 2. The sizes of the arrays related to channel depletions in DSM2 code have been expanded to load the daily data instead of the monthly data. Hydro and Qual have been recomplied accordingly. 3. The dispersion coefficients in the conflunence area of Sacramento River and San Joaquin River have been adjusted due to the new daily channal depletions. 4. The pathnames to retrieve the DCD v1.0 data in the Hydro time series inp file have been modified..

DSM2 version 8.3.1

DSM2 version 8.3.1

The current release DSM2 v8.2.2 differs from the previous release DSM2 v8.2.1 in that a bug in ECO-PTM was fixed. Specifically, ECO-PTM in DSM2 v8.2.2 improves the channel selection algorithm so that when particles encounter a gate or barrier that has no open culverts or weirs, they will not cross the gate or barrier.

Files related to the 2020 calibration of DSM2 v 8.2.0

The following is a summary of the features from the DSM2 Monitoring Special Study (MSS) release that were merged into the DSM2 2023 Full Calibration Release (FC_2023.01)* to create the "DSM2 Input 2025-05-28 historical update" release. The "DSM2 Input 2025-05-28 historical update" release was calibrated using DSM2 v8.4.1. * Delta Modeling Section (DMS) standard directory structure and file naming conventions * MSS time period, calendar years 2015-2024 * Time series input from MSS, with Yolo Bypass and Yolo Toe Drain inputs added. * Five minute time step for boundary flow and EC inputs * Martinez stage boundary input adjusted to compensate for the lack of simulation of wind and density-induced pressure gradient from salinity gradients * Channel depletions adjusted to improve simulation of null zone diversions and improve circulation patterns around Fabian Tract and Pescadero Tract. * Inferred drainage EC inputs from MSS for South Delta. All negative values were replaced with zeros. * Gate configuration and operating rules from MSS, with one change to the operating rules to correct an error in the operation of the Suisun Marsh Salinity Control Gates (SMSCG) * Input allows for variable delta x in different parts of the domain. * Cross-sections updated in South Delta using DEM for Modeling, Version 4.3 (add link). Source code and executables: DSM2 HYDRO, QUAL, and PTM: https://github.com/CADWRDeltaModeling/dsm2/releases/ * DSM2 2023 Full Calibration Release (FC_2023.01) and the corresponding release notes are available at https://data.cnra.ca.gov/dataset/dsm2-fc-2023-01

Release Notes The following is a summary of the differences between the current release DSM2 FC.2023.01 and the previous release DSM2 v8.2.2: - Updated cross-sections and channel lengths using the DSM2 GIS Reference Project, which used 2018 bathmetry, and determined channel lengths using the CSDP centerline lengths (for more information, see Chapter 2 of the 2020 Annual Report at https://data.cnra.ca.gov/dataset/dsm2/resource/010599fd-6d3c-42a6-bade-37822d4aa486). - Added reservoirs to represent the Yolo Flyway, Decker Island, and Tule Red restoration areas - Added channels to represent the Lindsey Slough restoration area. - Added a channel to connect the two branches of Paradise Cut. - Added channels to connect the Yolo Flyway, Decker Island, and Tule Red Restoration areas to the model grid. - Added layered reservoir input for all reservoirs. - Added channels for the Yolo Toe Drain, aka Prospect Slough. - Added Yolo Toe Drain inflow data as a boundary inflow. - Removed low flows from Calaveras flow input (lower flows don't make it to the Delta). This release contains time series inputs from the 2022 DSM2 historical release, with the following changes: - removed lower flow values from Calaveras River inflow time series. These lower flows do not actually make it to the Delta. - Added a time series for Yolo Toe Drain (aka Prospect Slough) inflow. Source Code: DSM2 HYDRO, QUAL, and PTM: https://github.com/CADWRDeltaModeling/dsm2/releases/

The current release DSM2 V8.2.1 differs from the previous release DSM2 V8.2.0 as follows: ========================================================================= 1. An updated grid map is included. 2. ECO-PTM is included in the current release. 3. DCD and SMCD packages are included. 4. The historical setup includes new SMCD results and updated output locations.

The current release DSM2 V8.2.1 differs from the previous release DSM2 V8.2.0 as follows: ========================================================================= 1. An updated grid map is included. 2. ECO-PTM is included in the current release. 3. DCD and SMCD packages are included. 4. The historical setup includes new SMCD results and updated output locations.