{
  "nx": 72,
  "ny": 24,
  "dx": 20.0,
  "dy": 20.0,
  "dt": 1.0,
  "steps": 2400,
  "manning_n": 0.035,
  "bed_slope": 0.005,
  "initial_depth": 0.3,
  "inflow_base_m3s": 55.0,
  "inflow_peak_m3s": 230.0,
  "peak_time_s": 360.0,
  "velocity_limit_ms": 6.0,
  "breach": {
    "enabled": true,
    "x_start": 44,
    "x_end": 49,
    "right_bank": true
  },
  "output_interval": 10
}