See Right Sidebar for links to pages that have new or updated content since the 2021 release of HEC-ResSim 3.3.

New Content in ResSim 3.5

Updated Content in ResSim 3.5

  • Page:
    The Options Editor (HEC-ResSim 3.5 User's Manual) —

    To access the Options Editor:

    • Select Options… from the Tools menu of any ResSim module.

    As shown in "Figure: ResSim Options Editor", the Options Editor is arranged in tabs. Some tabs are module dependent, such as the Simulation tab which only appears when the Options Editor is accessed from the Simulation module of ResSim.
  • Page:
    Lookback Tab (HEC-ResSim 3.5 User's Manual) —

    UPDATED IN RESSIM 3.5

    Selecting Lookback Type

    After specifying the operation set for each of your reservoirs, you will need to specify the initial (or starting) conditions for the alternative. This is referred to in ResSim as the Lookback (or warmup) period. You will need to specify what type of data will define each element and parameter during the Lookback period.
  • Page:
    Basics of Opening a ResSim Model (HEC-ResSim 3.5 User's Manual) —

    Starting ResSim

    To begin modeling reservoirs, you must first start ResSim. Like most other Windows applications, you can launch ResSim by:
  • Page:
    Hotstart Tab (HEC-ResSim 3.5 User's Manual) —

    The Hotstart Tab is used to create or use initial conditions based on a prior run.

    UPDATED IN RESSIM 3.5 As of ResSim 3.5, the Hotstart option must be enabled on the Run Control tab of the Alternative Editor. 

    Hotstart Options
  • Page:
    Reservoir Operation Zones (HEC-ResSim 3.5 User's Manual) —

    As illustrated in "Figure: Reservoir Editor Showing New Operation Set", when you create a new Operation Set, ResSim automatically creates a Zone-Rules tree that contains three default reservoir operation zones: Flood Control, Conservation, and Inactive. You may wish to rename these default zones and add descriptions. You may need to define additional zones as well. This section will detail how to edit the zone definitions of your operation set.
  • Page:
    Defining a Prescribed Release Rule (HEC-ResSim 3.5 User's Manual) —

    UPDATED IN RESSIM 3.5

    A Prescribed Release rule is a rule that can be used to "hand regulate" a reservoir. That means that you can tell the reservoir how to operate over a specific time window with a specific operating objective. The operating objective is defined by selecting an Operator and an accompanying value. For example, if the Operator is "Rel % Inflow", the Value is the percentage of inflow that should be released.
  • Page:
    OSI Menu Bar (HEC-ResSim 3.5 User's Manual) —

    UPDATED IN RESSIM 3.5

    The Menu Bar in the OSI is important to the setup and configuration of the OSI. After configuring the OSI, menus will be used less frequently.

    File Menu
  • Page:
    Operation Support Interface (HEC-ResSim 3.5 User's Manual) —

    Updated in v3.5

    OSI Look and Feel improvements have been made in version 3.5.  UPDATED IN RESSIM 3.5

    Bug in v3.5

    There are numerous MINOR bugs in the OSI in version 3.5.  Improvements are expected in future versions.