HEC-RAS 7.0 2D · SWE-EM
HEC-RAS 7.0.1 2D with its Eulerian shallow-water option (SWE-EM), which HEC recommends for dam breaks.
Production software, installed from its official source and run by the suite with its defaults, except the settings each card names. Rank #2 on the leaderboard, OpenHydro rating 951 (95 % interval 714 to 1188) over 7 tests; median difference 0.73 %. Score cards from: HEC-RAS 7.0.1 2D SWE-EM.
| Test | Difference, rank | Checks |
|---|---|---|
| Dam break onto dry ground A1F-010 | #12= 15 % off of 20 models | • Flood front 57.8 m behind exact; · Water conserved 0.0049 % error |
| Dam break into shallow water A1F-011 | #12= 1.4 % off of 20 models | • Average depth error 7.7 mm off; · Water conserved 0.011 % error |
| Steady flow over a shaped bed A2A-010 | #1= under 0.01 % off of 12 models | • Average depth error 0.062 mm off; · Water conserved 0.0039 % error |
| Flooding a cut-off pond A2C-EA1 | #7= 5.1 % off of 10 models | • Pond level, point 1 1.3 cm off; • Pond level, point 2 1.3 cm off; • Peak level 0.05 mm off |
| Filling floodplain hollows A2C-EA2 | #7= 0.73 % off of 10 models | • Water conserved 0.73 % off |
| Flood spreading over a floodplain A2C-EA4 | #1= under 0.01 % off of 10 models | • Water conserved 0.00088 % off |
| Valley flooding A2C-EA5 | #7= 0.044 % off of 10 models | • Water conserved 0.044 % off |