HEC PROSPECT Training Materials Current: #114 - HEC-RAS Steady Flow (Jan 2025) PDF Download PDF Download page #114 - HEC-RAS Steady Flow (Jan 2025). Current page All pages #114 - HEC-RAS Steady Flow (Jan 2025) For the HEC-RAS 1D Unsteady Flow class material, please go here.For additional HEC-RAS training materials, including PROSPECT #188, please see the HEC-RAS Training home space. ×