KR20030043115A - generation and management system for flood hazard map using a GIS - Google Patents

Abstract

PURPOSE: A flood risk map production and management system is provided to estimate the flood risk area and to produce a flood risk map by interlocking the GIS(Geographic Information System) with a water supply/floodgate model. CONSTITUTION: The system comprises a GIS database, a river data search module, a map production module, and a water supply/floodgate analysis module. The GIS database includes GIS diagram data and attribute data for flood risk estimation and an estimation display. The river data search module enables a user to search for the river data and inundation data in the GIS database. The water supply/floodgate analysis module performs a rainfall analysis, a water outflow analysis, a water flow analysis, and an inundation analysis, and enables a user to construct a model of the water supply/flood gate. The map production module displays the constructed model, and produces the map based on the modeling result.

Description

Generation and management system for flood hazard map using a GIS}

The present invention relates to a flood risk map production and management system (hereinafter referred to as a flood risk map system). In particular, a flood risk area prediction and a flood risk map are produced and produced by linking a hydraulic and hydrological model with a Geographic Information System (GIS) database. It relates to a flood risk mapping and management system that enables management.

In order to minimize property and casualties caused by repeated floods, areas with high risk of flood damage should be identified and managed. In addition, detailed information on evacuation routes and evacuation sites, locations of medicines, food, and critical rescue equipment should be provided to ensure rapid disaster response and to minimize damage to people and property.

The flood risk map shows the expected flooded areas due to the overflow and collapse of the levee in case of floods caused by typhoon or heavy rainfall by rainfall frequency (100, 200, etc.), and expresses the flooded area and depth. It is used as a means of public policy on management decision-making and flood damage. As the damages caused by floods in Korea are increasing day by day and natural disasters are increasing due to the development of the national territory, flood risk guidance as part of efforts to promote the safety and welfare of the people through the development of national disaster prevention type and to minimize the damage caused by the flood. The need for a production and management system is increasing.

In Japan, two types of maps are distributed to residents, including maps containing flood flood zones and evacuation routes.

Immersion depths were based on 0.5m intervals in Japan, and survey results were 0.2m or 0.5m. In the case of scale, the accumulation of about 1: 10,000 should be displayed to indicate the information to be expressed basically so that the transmission of information will be clear.

The present invention was devised to solve the above problems, and the object of the present invention is to implement a query and search of figures and attributes, analysis of hydrology and hydrology, and a schematic of analysis results by using a built database.

It is also an object of the present invention to provide an easy-to-use interface for users who use the system.

Flood risk map production and management system applied to the present invention,

GIS database that stores GIS graphic data and attribute data for flood risk prediction and result city, river information retrieval module that retrieves river information using GIS database, hydraulic and hydrological modeling, and is stored in GIS database It consists of a hydrologic module and a cartography module that maps the modeling results.

The GIS database consists of a graphic database consisting of topographic maps, river maps, soil maps, watershed maps, and administrative district maps, and an attribute database consisting of river basic status, watershed data status, rainfall data status, flooding data status, and topographical data status. do.

The river information retrieval module is composed of river information retrieval, flood information retrieval, river metadata retrieval, and the repair and hydrologic module is composed of rainfall analysis, runoff analysis, flood analysis, and river channel tracking.

The mapping module consists of stream information diagram, related information diagram, and flood map diagram.

Hereinafter, the flood risk map production and management system of the present invention will be described.

The flood risk mapping system (hereinafter referred to as flood risk guidance system) can produce and manage the flood risk area prediction and flood risk map by linking hydraulic and hydrological models and GIS database.

-Pilot Area

The pilot area for the development of this system covers the areas of Munsan-eup and Munsan-cheon Basin, which are wetland flooding areas considering flood events in northern Gyeonggi-do in summer '99 (Figure 1).

-Design of flood risk maps;

Experts survey found that the purpose of the flood risk map should be used for flood disaster management and disaster evacuation. In Japan, two types of maps are distributed to residents, including maps containing flood flood zones and evacuation routes.

Immersion depths were based on 0.5m intervals in Japan, and survey results were 0.2m or 0.5m. In the case of the scale, the accumulation of about 1: 10,000 should be displayed to indicate the information to be expressed basically, so that the information can be clearly communicated, but in the case of the result of this task, only 1: 25,000 digital map is secured. 1: 25,000 was used.

The flood risk map to be produced is intended to be distributed to the general public, so professional contents should be excluded and similar to general paper maps should be prepared for easy understanding.

Drawing standards

Two standards for flood risk maps can be produced: basic and posted. In order to be compatible with other existing map production systems, the drawing standards are designed to be the same as the drawing standards of the national basic map issued by the National Geographic Institute, and in the case of the posting type, refer to the foreign flood risk map. It was.

① Basic type: 550 mm × 440 mm

② Posting Type: 1120 mm × 780 mm

Schematic Items

Flood risk maps include watershed names, scales, legends, and guidelines. Items other than watershed names should be marked using margins when mapping. The notation method for each detailed item is as follows.

-Watershed name

Fill in the name of the map with the name of the watershed.

(Example) Moonsan Basin Flood Risk Map

-Scale

The labeling method is in accordance with the National Geographical Mapping Guidelines, and the scale can be changed flexibly according to the watershed.

Legend

Since it is distributed to ordinary people without specialized knowledge, only the flooding and past dike collapse points should be marked. Immersion depths were divided into eight levels of 50 cm units, and Figure 4 shows a legend of paper maps.

- Notice

The purpose of map creation, utilization, precautions for flood disasters, etc., should be filled out with information to be distributed to the residents. Rainfall frequency is based on 100-year rainfall so that it can be changed according to the size of the watershed and the importance of the region. An example of the notice is shown below.

o Examples of guidance:

System design and database design

The flood risk guidance system is a system for efficient measures and management before and after floods. The main goal of the map production system is to include the inquiry function of flood-related data in order to increase the efficiency of river managers and disaster managers.

This system is built on ArcView and Visual Basic based on Windows, and the result of hydraulic and hydrological model is saved as database, and it is used to create flood risk map by mapping it with GIS database.

-Major components of the system

The system consists of the GIS database, river information retrieval module, mapping module, and hydrology and hydrology module (Figure 5).

o GIS database: GIS graphic data and attribute data for flood risk prediction and resulting cities.

o River information retrieval module: Retrieval of river information using GIS database.

o Repair and hydrology module: Linkage of hydraulic and hydrology modeling and storage as GIS database.

o Mapping module: map the modeling results

Database design

-Flow of data

(1) system basic data flow chart

(2) shape search

(3) Watershed Status

(4) Immersion performance data

(5) hydraulic and hydrological models

(6) Linkage between hydraulic and hydrological models

(7) system management

Database design

-Shape data list

Table 1 lists the input GIS graphic data of the flood risk map system.

-Attribute Data List

Except for the attribute data associated with the figure data used in this system, the attribute data in the form of a separate DBF file has two attribute data files related to the river master and the flood analysis (Table 2).

Detailed design of the database

Explosive River

The exploded stream of the flood risk map is the exploded stream defined in the standard stream data model. That is, the explosive stream can extract the river layer from the NGIS topographic map 1: 5,000 by referring to the feature code corresponding to the stream. The feature codes and attribute tables for the rivers are shown in Table 3.

-Contour

Contour lines can be extracted by referring to feature codes corresponding to contour lines from NGIS topographic map 1: 5,000. The contour has the attribute table and feature codes shown in Table 4.

-Elevation

Elevation allows extraction of layers from NGIS topographic maps with reference to the following feature codes (Table 5).

-Road boundary

The road can be extracted from the digital topographic map, and the National Geographical Institute's digital topographic layer code is shown below (Table 6). The roads include high-speed national highways, general national highways, provincial roads, metropolitan provinces, metropolitan cities, provinces, archipelagos, counties, republics and roads.

-Railway center line

Railway center lines can be extracted from the digital topographic map, using the layer codes shown in Table 7. The center line of the railway includes all the regular railways, special railways, railways in tunnels, railways under construction, subway (underground) and subway (ground) included in NGIS.

Administrative border

The administrative boundary can be extracted from the digital topographic map and follows the digital topographic layer code system. The following Table 8 shows the layer codes of the attribute table and the digital topographic map of the administrative boundary.

-Lakes and reservoirs

Lakes and reservoirs are extracted from the NGIS topographic map 1: 5,000 by referring to the feature code corresponding to the stream (Table 9).

-Water resource map

The water resource unit map follows the code system of the water resource unit map presented by Korea Water Resources Corporation. The attribute values are shown in Table 10.

-Geological map

The geological map follows the system of numerical geological maps of the Korea Institute of Geoscience and Mineral Resources, and the attribute table is shown in Table 11.

-Soil map

Soil maps were extracted from precision soil maps with a scale of 1: 25,000, and the structural structure of the shapes and attributes of precision soil maps presented by the Agricultural Infrastructure Corporation. ).

-Green area

Natural greenery is also extracted from the green nature of the Ministry of Environment and follows the classification classification of the Ministry of Environment (Table 13).

Flood Flood

Flood flood map refers to the conversion of flood analysis results to GIS data during hydraulic and hydrological analysis (Table 14).

-River Master

It contains the most basic information related to rivers as defined in the study on river information standardization (Table 15).

Flood Analysis

Flood flood maps are used in conjunction with flood flood maps as a hydraulic and hydrological results table (Table 16).

System screen design

The screen design can be divided into menu bar, toolbar, index window and main screen as shown in ① ~ ④ (Figure 13). ① menu bar can execute the functions of the system and can be divided into figure search, property search, search, metadata search, hydrologic analysis, flooded area view, flood risk map output, system management, and help. The toolbar of ② is designed in the form of a button to intuitively use the functions that can be executed in the menu bar. ③ is the index window to see the movement of the main screen at a glance, and ④ is the main screen window showing the result of the system function.

System function definition

The menu of the whole system consists of system management, figure search, attribute search, data input, search, spatial analysis, mathematical and hydrological analysis, view, and help. The menu functions of this system are as Table 17 and 18 and Figure 14 is the screen design.

System implementation

This flood risk guidance system uses the built-in database to search and search for figures and attributes, analyze hydraulic and hydrological, and draw the analysis results. To this end, various modeling tools for hydraulic and hydrological analysis were linked with the system to enable hydraulic and hydrological analysis for various regions. It is also a feature of the system that provides an easy-to-use interface for users who use the system.

-Technical aspects

For the efficiency of flood risk guidance system operation, the system was developed considering the following three technical aspects.

-Scalability

In addition to providing information on flood risk areas (flood areas), the flood risk guidance system should also provide a variety of information needed to make decisions about the causes and preventive measures of flood risk areas. For this purpose, the system was developed considering the scalability of the system so that various data and modeling tools can be integrated smoothly.

- compatibility

A large amount of information to be built through this system and to be built in the future is stored in a database, and this information must be effectively delivered to a large number of related organizations. Compatibility of the system is required for sharing information.

- stability

In order to ensure stability, which is an essential item to be considered in most systems, security of key data that can affect the development and stability of the system that meets the specifications of the hardware to which this system is applied is applied.

Administrative aspect

Through the needs analysis of users, essential functions were implemented in this system through contact with the business practitioners related to the system. It also focuses on reducing the complexity of the system for users who are not familiar with the structure of the system.

-Efficient Menu Composition

In using this system, it is necessary to build a system that is easy to use for users who have computer experience and awareness and users who do not have professional knowledge. To this end, menu items that can be judged intuitively can be applied for quick and easy operation.

- Economics

In the analysis of efficient flood management and damage compensation in flood damaged areas, an economical system was established to bring about the best flood management effect at a very low cost.

System features

The menu of this system is largely composed of figure search, property search, search, metadata search, hydrology and hydrology analysis, flooded area view, flood risk map output, system management, and help. It is. Figures 15 and 16 show the system login screen and the full menu screen of the system.

-Shape lookup

The figure inquiry menu of this system is composed so that the layers such as administrative area map, water resource unit map, river map, contour map, road network map, soil map, green map and geological map can be viewed. If you select the detailed menu, the appropriate layer is selected and displayed on the screen, and you can easily get information about the figure of the corresponding layer by clicking the mouse.

Figure 17 shows the structure of figure lookup menu, and Figure 18 shows the result of figure lookup. There is a layer overlay function in the figure search menu, through which you can add or remove layers you want. This function does not remove the layer from the system, but simply adjusts the layer's in and out of the visible window. Figure 19 shows the configuration of the dialog box and screen shown when the layer overlay function is selected. The check button of the dialog box indicates whether to select it and selects the reference layer so that the figure properties of the layer can be checked immediately.

-Property Lookup

The attribute search function provides attribute information for each layer of a corresponding region.

Figure 20 shows the menu for attribute lookup. Since the river layer is the most important layer in the flood risk map, detailed property information is provided in addition to the general property. This feature is also applied to modeling flooded areas so that information such as depth of flooding is expected to be readily available, and changes can be made (Figures 21 and 22).

- Search

The search function provides the information (area name) about the area desired by the user through a dialog box and provides a function to search and enlarge the area selected by the user. Through this function, the user can easily search the corresponding area even if the user does not know the location of the desired area. In this system, it is possible to search the location of the figure of the desired area by using the name of administrative area and the name of river (Fig. 23, 24).

Metadata

The importance of metadata is growing with the development of the system. Therefore, this system has a function to provide metadata for research on standardization of river information) Ministry of Construction and Transportation, Korea Water Resources Corporation, 2001, Research on standardization of river information. The metadata editor of this system used the metadata editor developed in river information standardization, and the metadata was used for the demonstration construction in river information standardization. The metadata is stored in the form of a DB so that the user can easily obtain the information. The metadata is also provided. Figure 25 below shows the main window of metadata and provides detailed information for each basin.

The detailed items of each basin of metadata include identification information management, data quality information management, history information management, spatial data presentation information management, spatial reference system information management, object list information management, data distribution information management, and metadata reference information management. Each detailed menu delivers the contents to individual information window.

-Mathematical and hydrological analysis

Hydraulic and hydrological analysis consists of rainfall analysis, runoff analysis, river flow and flood analysis. When the menu bar is executed as shown in (a) of Figure 26, the menu bar for hydraulic and hydrological analysis is executed as shown in (b).

(1) Rainfall Analysis

Rainfall analysis is the analysis of rainfall data in the target watershed and the calculation of rainfall by frequency required for the runoff model. The model consists of the input data screen, model execution screen, and model execution results. The following is a menu of rainfall analysis (Figure 27).

① Input data

The input data of the rainfall model are the target watershed, rainfall data, and the analysis of the target watershed for the model. Figure 28 shows 36 rainfall data and seven data interpretation rainfall frequencies in the Munsan Basin (five, ten, twenty, fifty, eighty, one hundred, and two hundred years).

② help

For the convenience of the user, it can be used with the description of the input window of the rainfall model. If you click Help in the rainfall model input window, you can see the help shown in Figure 29.

③ Execution of Rainfall Model

This is the screen to execute the rainfall analysis after the data input of the rainfall model is finished (Figure 30). Although the rainfall model is in the DOS version, the user can enter the INPUT file and OUTPUT file name automatically by implementing the GUI. Running the rainfall model will run the rainfall model on the DOS screen.

④ Rainfall Analysis Results

Figure 31 shows the result of rainfall analysis, which consists of basic statistics, goodness of fit, and frequency rainfall. In particular, frequency rainfall is used as input data in estimating probability floods in runoff analysis.

o Basic Statistics

This menu generates and outputs basic statistical data needed to determine goodness of fit for analyzing the reliability of the input rainfall data. The average, variance, and distortion of rainfall data input as basic statistics can be analyzed.

o goodness of fit

If the input in order to calculate the frequency of superior red, calculating model of the part is determined rainfall often superior method comprising the data GAM2, GUM, LN2, LN3 model was used, The test method by using the x ² method and KS method Determine. Test criteria for each model are established and values greater than this are determined to be inadequate.

o frequency rainfall

Rainfall analysis data required for runoff analysis as a result of rainfall calculation for each model and frequency. As a result of several rainfall analyzes, it was determined that the data produced by the LN2 model was appropriate for the Munsan Basin.

(2) Leakage Analysis

In order to predict the amount of flooding at any point in the watershed, runoff from the runoff model should be calculated. The estimated runoff is used as data for the runoff tracking model and the overflow model. The spill model consists of an input screen, an execution screen, and an output screen. Figure 32 shows the menu for the runoff analysis.

① Runoff analysis input

It is necessary to input basic information, input condition, simulation time, rainfall data, subwatershed data, runoff condition tributary information, and sewer information as necessary data for the runoff model. Figure 33 shows the window for defining input data prior to runoff analysis. The detailed input data is as below and the input window is as Fig. 34.

o Basic Information

In the basic information window, set the target watershed and the file name to be output after the simulation.

o Input condition

Specify the characteristics of the data needed to run the runoff model, including simulation time, number of stations, number of watershed exits, number of subwatersheds, nqsn, number of sewers, number of dams, number of confluence points, nunc, number of unit flows used, ndiv, Huff It consists of the number of distributions.

o Simulation time

This screen is to designate the current time, flood start time and flood end time.

o Rainfall data

It is a window to input the form of input data of rainfall data and Huff coefficient for rainfall distribution of the input data. There are two types of rainfall data: data file (rain.dat) and input frequency rainfall generated from rainfall analysis model. In this case, the distribution time (rainfall duration) required to distribute rainfall using the Huff method. Must be entered.

o subwatershed data

Enter the subdivision into subwatersheds for accurate runoff analysis for the target basin (Munsan basin). The input data for each subwatershed consists of watershed name, unit flow rate, watershed area (km), CN coefficient, arrival time (hr), and euro extension.

o Leakage condition / feeder information

This is a screen for inputting the topography and spatial information of the watershed.The topographical information is the AMC condition that indicates the soil water content (1: no spillage after rainfall, 2: runoff after soil penetration, 3: runoff only). Happening) and select the runoff model (1: Clark, 2: Nakayasu, 3: Nash). The spatial information specifies whether the outflow at the confluence of subwatersheds and tributaries is subwatershed outflow (1-50) or subsurface outflow (over 51).

o Road Information

If the channel flows out after consolidation of subwatersheds, it is a window for inputting information about the channel.In the Munsan basin, the channel number of each channel is selected as R1, R2, and R3. Enter the information about the slope, the channel.

② help

For the convenience of users, the description of the input window of the spill model can be used together. Click Help in the leak model input window to view the help shown in Figure 35.

Run the runoff model

After entering the data of the spill model, the run of the run analysis is displayed. In the DOS version of the spill model, the message 'Please select a task (1: rainfall event, 2: probability flood)' appears. However, in this system, GUI is implemented to select work options and input data as shown in Figure 32, 33, 34 for the convenience of user. The leaked model is the DOS version, and Figure 36 shows the run screen.

④ Outflow analysis results

Figure 37 shows the files generated after running the model, sorted by data group. It consists of subwatershed runoff model constants, sewer runoff model constants, subwatershed 1mm · 1hr unit plots (cms), subwatershed average rainfall and effective rainfall (mm), subwatershed runoff, and inflow and outflow by dividing sewers (cms). Of these data, subwatershed runoff and inflows and outflows by segmented sewers are used as input data for channel tracking and flooding models.

o Basin runoff model constants

The watershed runoff model (1: Clark) and effective rainfall calculation method (SCS (CN)), which are information on the runoff model implementation method selected from the runoff model, are shown, and the CN index, watershed area, peak time, and peak flow for each subwatershed are shown. Indicates.

o Underflow model constant

It shows the length of each channel of the divided channel, the slope of the channel, the roughness coefficient and the consolidation information of the divided channel and the type of outflow.

o Subwatershed 1 mm · 1hr units (cms)

Among the input data, the CN coefficients and rainfall data inputted to subwatershed data, and the unit rainfall chart for each subwatershed by Clark model are generated.

o Average rainfall and effective rainfall in subwatersheds (mm)

Average rainfall and effective rainfall by subwatershed from flood start time to flood end time.

o subwatershed runoff

The data entered into the channel tracking and flooding models represent the runoff for each subwatershed.

o Inflow / outflow by splitting channel (cms)

Data input to the channel tracking and flooding model, which are the inflow / outflow of each channel.

(3) river flow and flood analysis

Flood simulation by dam failure is carried out by implementing rainfall model and runoff model, terrain data of flood forecasting area, embankment data, and flood model. Figure 38 shows the menu for river flow and flood analysis.

<Figure 38> Flood Analysis Menu

① input data

The input data were classified into general control data, tributary options, embankment destruction data, mainstream section, tributary section, roughness coefficient, and floodplain data that control the model, and other data include stream flow and flooding. The selected data is used as input for interpretation. Figure 39 shows the input data screen of the model for river flow and flood analysis.

o General control data

Basic data necessary for the simulation (number of rivers, total number of section data of the sewer, number of hydrological curve values) and simulation method (model time interval for calculation of the seismic model, simulation execution time) and main engine variables (feedback point acceleration factor) , Weights).

o Feeder options

Define the spatial / terrain characteristics of the tributaries (total tributaries, number of cross sections of upstream, number of upstream cross sections, inlet angles) and the relationship between flood wave and wind (wind stress coefficient, wind speed, inlet angle) during flooding. do.

o Embankment destruction data

Enter the expected break point of the dike and the specifications before and after the breakdown (the height of the point dike, the final width of the dike nodule, and the bottom elevation of the nodule).

o Main section

The topographical form of Munsancheon, the main stream, is expressed numerically and inputs the section location, the distance between sections, and the shape (station, elevation) of each section. In the case of Munsancheon, the distance of 5600m was inputted along with the shape of the cross section using 29 cross sections for 200m cross section distance.

o Feeder section

Enter the bottom section location, the point distance, and the shape of the bottom section of the Dongmun stream, a branch of Munsan Stream.

o Roughness coefficient

It is a screen to input the roughness coefficient of main stream (Munsancheon) and tributary (Dongmuncheon). This roughness coefficient is a value calculated by the execution of the channel tracking model, and the left and right roughness coefficients of the stream are input.

Floodplain Resources

Divide the area expected by the floodplain into grids and enter the location and elevation of each grid. In the case of Munsan Basin, 757 of 50m grids were created, and the elevation of each grid was entered.

② help

For the user's convenience, the river flow and flood analysis can also be used together with other models. In the stream flow and flood analysis input window, click Help to view the help shown in Figure 40.

③ Execution of river flow and flood analysis

This is the screen to execute the river flow and flood analysis after the data input of the river flow and flood analysis is completed (Figure 41). The river flow and flooding model was the DOS version, but for the convenience of the user, the INPUT and OUTPUT file names were automatically entered as a GUI implementation.

(4) River flow and flood analysis results

The resulting flow of the river flow and flood analysis shows the characteristics of the flooded area in a text file (Figure 42). It is linked to flood risk guidance systems and used to urbanize flood forecasting areas. The resulting data is the flow rate, direction of flow, and depth of flooding in the flooded zone over time due to flooding. The value of this result is converted to GIS data type and displayed on the screen in flooded area view.

-View flooded area

This system has the function to show the flooded area, and has the function to output satellite image, image map, 2D video, 3D video, etc. with the flooded map (Fig. 43). After the hydrologic and hydrologic analysis of the watershed is completed, the analysis results are converted into GIS data and displayed on the screen of the watershed (Figure 44). In addition, the flood analysis result data converted to GIS data can be viewed as shown in Figure 45. The image used in this system was utilized with TK-350 satellite image of spatial resolution 2m, which is Russia's high resolution phase, in cooperation with Korea Water Resources Corporation.

① View 2D video

Figure 47 creates 2D video data to more effectively show changes in flooded areas over time. The 2D video was able to superimpose the result of the flood analysis on the satellite image.

② View 3D video

Figure 48 shows a video of a 2D submerged map converted to 3D. In the beginning of the video, the modeling results were expressed by time in 3D format from the time of the immersion.

-Flood risk map output

The printout function of the flood hazard map includes the settings for the printer (Figure 49). The printer's settings are to support printing. You can set the printer's settings, paper size, feed method, and room for printing (Figure 51).

System management

The System Management menu includes System Initialization, Layer Add / Delete, Show / Hide / Edit Legend, Show / Clear Label, Print / Printer Settings, and Shut Down (Figure 52).

① System initialization

This menu is used to initialize the system. The administrative area is displayed on the view (Figure 53).

② Add / Delete Layer

Add / Delete Layers This function allows you to add or delete layers directly on the system view. This is to allow data to be updated or to add new layers for analysis (Figures 54 and 55).

③ Show, hide and edit legends

The user has set up the Show, Hide, and Edit Legend menus when the user needs to modify or information about the layer's legend (Figures 56 and 57).

④ Add / Delete Label

It is a menu that adds and deletes labels and supports adjustment of labels displayed on the view (Figure 58, 59).

- Help

In order to understand the flood risk map, the system adds tips on the construction of the flood risk map (Figure 60).

As described above, the present invention provides an economical system that can bring about the best flood management effect at a very low cost in the analysis of efficient flood management and damage compensation of flood damaged areas. In addition, detailed information on evacuation sites, locations of medicines and food, and critical rescue equipment will provide prompt disaster response and minimize damage to life and property.

Claims (5)

GIS database that stores Geographic Information System (GIS) graphic data and attribute data for flood risk prediction and result city; A river information search module for searching river information using a GIS database; A hydraulic and hydrological module that links hydraulic and hydrological modeling and is stored in a GIS database, Flood risk map production and management system using GIS, characterized in that it consists of a mapping module that maps the modeling results to a map. According to claim 1, wherein the GIS database is a topographical map, river map, soil map, watershed map, administrative area map and the basic status of rivers, watershed status, rainfall data status, flooding data status, terrain data status Flood risk map production and management system using GIS, characterized in that it consists of a property database. The system of claim 1, wherein the river information retrieval module comprises river information retrieval, flood information retrieval, and river metadata retrieval. The flood risk mapping and management system using GIS according to claim 1, wherein the hydraulic / hydrological module is composed of rainfall analysis, runoff analysis, flood analysis, and bottom trace. The flood risk map production and management system using a GIS according to claim 1, wherein the mapping module comprises stream information diagram, related information diagram, and flood map diagram.