# Evaluation of Inundation Probability and Inundation Depth through Rainfall–Runoff Analysis

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## Abstract

**:**

## 1. Introduction

## 2. Materials and Methods

## 3. Research Area and Establishment of Database

#### 3.1. Study Area

#### 3.2. Study Model

#### 3.3. Calibration of Urban Flooding Analysis

#### 3.4. Database of Inundation

## 4. Analysis of the Probability of Floods by Rainfall

## 5. Quantitative Evaluation of Underground Floods

#### 5.1. Selection of Probability Distribution

#### 5.2. Evaluation of Underground Inundation Probability

## 6. Discussion

## 7. Conclusions

## Author Contributions

## Funding

## Institutional Review Board Statement

## Informed Consent Statement

## Data Availability Statement

## Acknowledgments

## Conflicts of Interest

## References

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**Figure 3.**Stairway Height at Exit 6 of Gangnam Station: (

**a**) Facade; (

**b**) Height Measurement; (

**c**) Left Height; (

**d**) Right Height.

Rainfall Duration (min) | Frequency (Year) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|

2 | 3 | 5 | 10 | 20 | 30 | 50 | 70 | 80 | 100 | |

60 | 48.7 mm | 56.8 mm | 65.9 mm | 77.2 mm | 88.1 mm | 94.4 mm | 102.2 mm | 107.3 mm | 109.3 mm | 112.7 mm |

120 | 70.0 mm | 81.7 mm | 94.8 mm | 111.2 mm | 126.9 mm | 135.9 mm | 147.2 mm | 154.6 mm | 157.6 mm | 162.5 mm |

180 | 82.7 mm | 98.8 mm | 116.7 mm | 139.2 mm | 160.8 mm | 173.2 mm | 188.7 mm | 198.9 mm | 202.9 mm | 209.7 mm |

Scenario | Rainfall Duration | Max. Flooded Area (km^{2}) | Scenario | Rainfall Duration | Max. Flooded Area (km^{2}) | ||
---|---|---|---|---|---|---|---|

Result of 2D simulation | 2 yr | 1 h | 0.085 | Result of 2D simulation | 30 yr | 1 h | 0.565 |

2 h | 0.086 | 2 h | 0.604 | ||||

3 h | 0.083 | 3 h | 0.566 | ||||

3 yr | 1 h | 0.174 | 50 yr | 1 h | 0.638 | ||

2 h | 0.118 | 2 h | 0.696 | ||||

3 h | 0.106 | 3 h | 0.638 | ||||

5 yr | 1 h | 0.333 | 70 yr | 1 h | 0.679 | ||

2 h | 0.307 | 2 h | 0.769 | ||||

3 h | 0.249 | 3 h | 0.728 | ||||

10 yr | 1 h | 0.436 | 80 yr | 1 h | 0.702 | ||

2 h | 0.477 | 2 h | 0.785 | ||||

3 h | 0.402 | 3 h | 0.746 | ||||

20 yr | 1 h | 0.523 | 100 yr | 1 h | 0.724 | ||

2 h | 0.566 | 2 h | 0.823 | ||||

3 h | 0.539 | 3 h | 0.746 |

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**MDPI and ACS Style**

Keum, H.-J.; Seo, J.-C.; Choo, Y.-M.
Evaluation of Inundation Probability and Inundation Depth through Rainfall–Runoff Analysis. *Water* **2022**, *14*, 4076.
https://doi.org/10.3390/w14244076

**AMA Style**

Keum H-J, Seo J-C, Choo Y-M.
Evaluation of Inundation Probability and Inundation Depth through Rainfall–Runoff Analysis. *Water*. 2022; 14(24):4076.
https://doi.org/10.3390/w14244076

**Chicago/Turabian Style**

Keum, Ho-Jun, Jong-Cheol Seo, and Yeon-Moon Choo.
2022. "Evaluation of Inundation Probability and Inundation Depth through Rainfall–Runoff Analysis" *Water* 14, no. 24: 4076.
https://doi.org/10.3390/w14244076