{
    "twi_data": {
        "twi_physics": 16.0447203124221,
        "correction_factor": 1.2749471527921064,
        "twi_enhanced": 20.45617047966823,
        "risk_level": "VERY_HIGH"
    },
    "flood_zones": [
        {
            "location_id": "FLOOD_001",
            "coordinates": {
                "latitude": -6.807823,
                "longitude": 110.841687
            },
            "risk_level": "HIGH",
            "twi_enhanced": 20.45617047966823,
            "flood_probability": 0.7728085239834115,
            "area_affected_ha": 2.5,
            "recommendations": [
                "Install drainage system urgently",
                "Build retention pond",
                "Elevate critical infrastructure",
                "Implement flood early warning system"
            ]
        },
        {
            "location_id": "FLOOD_002",
            "coordinates": {
                "latitude": -6.802823,
                "longitude": 110.846687
            },
            "risk_level": "HIGH",
            "twi_enhanced": 20.45617047966823,
            "flood_probability": 0.7728085239834115,
            "area_affected_ha": 3.3,
            "recommendations": [
                "Install drainage system urgently",
                "Build retention pond",
                "Elevate critical infrastructure",
                "Implement flood early warning system"
            ]
        },
        {
            "location_id": "FLOOD_003",
            "coordinates": {
                "latitude": -6.812823,
                "longitude": 110.844687
            },
            "risk_level": "HIGH",
            "twi_enhanced": 20.45617047966823,
            "flood_probability": 0.7728085239834115,
            "area_affected_ha": 4.1,
            "recommendations": [
                "Install drainage system urgently",
                "Build retention pond",
                "Elevate critical infrastructure",
                "Implement flood early warning system"
            ]
        }
    ],
    "rtho_recommendations": [
        {
            "location_id": "RTH_001",
            "coordinates": {
                "latitude": -6.799823,
                "longitude": 110.835687
            },
            "priority": "LOW",
            "twi_enhanced": 20.45617047966823,
            "suitability_score": 0.62,
            "area_recommended_ha": 3.9,
            "location_purpose": "Intercept upstream runoff before reaching flood zones",
            "reasons": [
                "Gentle slope (2.8\u00b0) allows good infiltration",
                "Moderate soil moisture (0.30) indicates good drainage",
                "High potential for flood mitigation"
            ],
            "expected_benefits": {
                "water_retention_m3_per_event": 1545,
                "flood_reduction_percent": 31,
                "groundwater_recharge_m3_per_year": 46368,
                "catchment_area_ha": 30.9
            },
            "design_recommendations": {
                "vegetation_type": "Mixed trees and grass",
                "depth_m": 0.5,
                "infiltration_trenches": true,
                "bioswale": true,
                "retention_pond": true
            }
        }
    ],
    "drainage_recommendations": [
        {
            "location_id": "DRAIN_001",
            "coordinates": {
                "latitude": -6.801823,
                "longitude": 110.845687
            },
            "priority": "HIGH",
            "drainage_type": "Primary Drainage Channel",
            "necessity_score": 0.68,
            "specifications": {
                "channel_width_m": 2.5,
                "channel_depth_m": 1.5,
                "channel_slope_percent": 0.83,
                "lining_type": "Concrete",
                "length_estimated_m": 100
            },
            "capacity": {
                "design_capacity_m3_per_hour": 38997,
                "peak_flow_m3_per_second": 10.83,
                "catchment_area_ha": 46.4
            },
            "expected_benefits": {
                "flood_reduction_percent": 40.85795800730328,
                "ponding_time_reduction_hours": 8.1,
                "affected_area_ha": 32.5
            },
            "reasons": [
                "High TWI (20.5) indicates severe water accumulation",
                "Multiple flood zones (3) require comprehensive drainage",
                "High rainfall (10.5 mm/day) increases drainage necessity",
                "Strategic placement for optimal flood mitigation"
            ],
            "maintenance_requirements": {
                "cleaning_frequency": "Monthly",
                "inspection_frequency": "Weekly during rainy season",
                "estimated_annual_cost_million_idr": 7.5
            }
        },
        {
            "location_id": "DRAIN_002",
            "coordinates": {
                "latitude": -6.812823,
                "longitude": 110.847687
            },
            "priority": "HIGH",
            "drainage_type": "Secondary Drainage Network",
            "necessity_score": 0.68,
            "specifications": {
                "channel_width_m": 2.5,
                "channel_depth_m": 1.5,
                "channel_slope_percent": 0.83,
                "lining_type": "Concrete",
                "length_estimated_m": 150
            },
            "capacity": {
                "design_capacity_m3_per_hour": 38997,
                "peak_flow_m3_per_second": 10.83,
                "catchment_area_ha": 46.4
            },
            "expected_benefits": {
                "flood_reduction_percent": 40.85795800730328,
                "ponding_time_reduction_hours": 8.1,
                "affected_area_ha": 32.5
            },
            "reasons": [
                "High TWI (20.5) indicates severe water accumulation",
                "Multiple flood zones (3) require comprehensive drainage",
                "High rainfall (10.5 mm/day) increases drainage necessity",
                "Strategic placement for optimal flood mitigation"
            ],
            "maintenance_requirements": {
                "cleaning_frequency": "Monthly",
                "inspection_frequency": "Weekly during rainy season",
                "estimated_annual_cost_million_idr": 7.5
            }
        },
        {
            "location_id": "DRAIN_003",
            "coordinates": {
                "latitude": -6.800823,
                "longitude": 110.836687
            },
            "priority": "HIGH",
            "drainage_type": "Lateral Collection System",
            "necessity_score": 0.68,
            "specifications": {
                "channel_width_m": 2.5,
                "channel_depth_m": 1.5,
                "channel_slope_percent": 0.83,
                "lining_type": "Concrete",
                "length_estimated_m": 200
            },
            "capacity": {
                "design_capacity_m3_per_hour": 38997,
                "peak_flow_m3_per_second": 10.83,
                "catchment_area_ha": 46.4
            },
            "expected_benefits": {
                "flood_reduction_percent": 40.85795800730328,
                "ponding_time_reduction_hours": 8.1,
                "affected_area_ha": 32.5
            },
            "reasons": [
                "High TWI (20.5) indicates severe water accumulation",
                "Multiple flood zones (3) require comprehensive drainage",
                "High rainfall (10.5 mm/day) increases drainage necessity",
                "Strategic placement for optimal flood mitigation"
            ],
            "maintenance_requirements": {
                "cleaning_frequency": "Monthly",
                "inspection_frequency": "Weekly during rainy season",
                "estimated_annual_cost_million_idr": 7.5
            }
        },
        {
            "location_id": "DRAIN_004",
            "coordinates": {
                "latitude": -6.813823,
                "longitude": 110.837687
            },
            "priority": "HIGH",
            "drainage_type": "Outlet Channel",
            "necessity_score": 0.68,
            "specifications": {
                "channel_width_m": 2.5,
                "channel_depth_m": 1.5,
                "channel_slope_percent": 0.83,
                "lining_type": "Concrete",
                "length_estimated_m": 250
            },
            "capacity": {
                "design_capacity_m3_per_hour": 38997,
                "peak_flow_m3_per_second": 10.83,
                "catchment_area_ha": 46.4
            },
            "expected_benefits": {
                "flood_reduction_percent": 40.85795800730328,
                "ponding_time_reduction_hours": 8.1,
                "affected_area_ha": 32.5
            },
            "reasons": [
                "High TWI (20.5) indicates severe water accumulation",
                "Multiple flood zones (3) require comprehensive drainage",
                "High rainfall (10.5 mm/day) increases drainage necessity",
                "Strategic placement for optimal flood mitigation"
            ],
            "maintenance_requirements": {
                "cleaning_frequency": "Monthly",
                "inspection_frequency": "Weekly during rainy season",
                "estimated_annual_cost_million_idr": 7.5
            }
        }
    ],
    "summary": {
        "flood_zones": {
            "total": 3,
            "high_risk": 3,
            "moderate_risk": 0,
            "low_risk": 0
        },
        "rtho_recommendations": {
            "total": 1,
            "high_priority": 0,
            "medium_priority": 0,
            "total_area_ha": 3.9,
            "estimated_flood_reduction_percent": 31.0
        },
        "drainage_recommendations": {
            "total": 4,
            "high_priority": 4,
            "medium_priority": 0,
            "total_capacity_m3_per_hour": 155988,
            "estimated_flood_reduction_percent": 40.85795800730328
        }
    }
}