1. Applications of the NWS FLDWAV Model

2. Teton Dam Failure on Snake River

3. Teton Dam Failure Specifications Dam Height: 300 ft Crest Length: 3,000 ft Storage behind dam: 250,000 acre-ft Dam crest width: 35 ft Slope of upstream dam face: 1:2 Slope of downstream dam face: 1:2.5 Failure occurred June 6, 1976 11 people killed 25,000 people homeless $400M damage Peak Outflow: 1.6 – 2.8 million cfs (2.3M best estimate) Breach shape – trapezoid. Max width 500 ft; side slope 1 : 0.5 Reservoir depleted in 5 hrs

4. Outflow Hydrograph and Flooded Area Downstream of Teton Dam

5. Teton Dam Failure

6. Susquehanna River System

9. Lower Mississippi River System

10. Lower Mississippi River BONNET CARRE DIVERSION RED RIVER LDG (MI 302.4) BATON ROUGE DONALDSONVILLE RESERVE NEW ORLEANS CHALMETTE PT A LA HACHE VENICE (MI 10.7) MORGANZA DIVERSION MISSISSIPPI GAGING STATION AND COMPUTATIONAL NODE LATERAL INFLOW OR OUTFLOW