Dam Breach Analysis
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BEI provides dam breach inundation analyses and failure consequence assessments for impoundment classification, emergency action plans (EAP), and regulatory compliance. Analyses are conducted in accordance with TCEQ dam safety regulations and applicable FEMA and USACE guidance.
Scope of Services
- Dam and embankment characterization: geometry, materials, and spillway capacity review
- Breach parameter development: breach width, side slopes, formation time (Froehlich, USBR, regression methods)
- HEC-RAS unsteady flow dam breach simulation (1D and 2D)
- Peak outflow and flood wave routing downstream through channel and floodplain
- Inundation mapping: peak depth, velocity, and arrival time grids
- Hazard classification support per TCEQ Chapter 299 criteria
- Emergency Action Plan (EAP) technical support and inundation zone mapping
- Incremental hazard analyses comparing breach vs. no-breach scenarios
Typical Projects
Applicable Guidance
| TCEQ Ch. 299 | Texas dam safety program classification and breach study standards |
| FEMA P-946 | Reverse routing and breach parameter guidance |
| HEC-RAS 2D | Coupled 1D/2D inundation modeling platform |
| USACE & USBR | Breach parameter regression equations |