The following research programs, agencies, and organizations have provided funding for capabilities in the HEC-RAS softaware.

U.S. Army Corps of Engineers
- System-Wide Water Resources Program (SWWRP)
  - General research and development support
  - Sediment transport
  - Nutrient fate and transport
  - Modified Puls Routing within an Unsteady flow model
- U.S. Army Engineer Districts
  - Los Angeles District
    - Channel design/modification tools
  - New Orleans District
    - Pump Stations
    - Old River Control Structure
    - Pressurized Pipe flow
    - Geo-referencing tools
    - Minor losses and Contraction and expansion losses for unsteady flow
  - Portland District
    - Water Temperature Modeling
  - St. Paul District
    - Lock & Dam Gate Operations
    - Pump Station Override Rules
  - Little Rock District
    - Advanced Lateral Structures
- Corps Mapping Modeling and Consequences Center
  - HEC-RAS Mapper (performs inundation mapping inside of RAS)
Federal Highway Administration
- WSPRO Bridge Hydraulics
Tampa Bay Water
- Overflow Gates
- User Defined Rules for Gate Operations
South Florida Water Management District
- Groundwater interaction with Storage areas
- Improved Pump control with Rules

Sponsors