US20010032050A1 - System and method for performing flood zone certifications - Google Patents
System and method for performing flood zone certifications Download PDFInfo
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- US20010032050A1 US20010032050A1 US09/821,388 US82138801A US2001032050A1 US 20010032050 A1 US20010032050 A1 US 20010032050A1 US 82138801 A US82138801 A US 82138801A US 2001032050 A1 US2001032050 A1 US 2001032050A1
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- Y02A10/40—Controlling or monitoring, e.g. of flood or hurricane; Forecasting, e.g. risk assessment or mapping
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- the present invention generally relates to analysis of geographic features and characteristics, and in particular to a system and method for performing flood zone determinations.
- the map analyst goes to a map storage area and retrieves the desired map, often examining several maps before making a final decision.
- map analysis examines flood zone notations on the map at the property's location in order to determine its flood zone status.
- a digital raster map is a computerized map image that resembles a conventional paper map in that it presents an image of the mapped area, but has no additional underlying data associated with the features of the map.
- a raster map is typically created by scanning a conventional paper map, and is a grid-based map composed of pixels (or dots) of color or black & white. Each pixel in the grid can be referenced by the pixel coordinates, and has only one associated value, indicating the color of that pixel.
- Raster images are commonly referred to as “bit mapped” images.
- a vector map uses lines and polygons, rather than pixels, to describe an image. Unlike a raster map, in which the map image is simply stored as a grid of pixels, when a vector map is displayed, it is drawn from a set of underlying data. The vector map is created through the placements of nodes on a plane and connecting those nodes with lines.
- Vector lines can be attributed with tables of data such as elevations, values, names or other information relative to the line.
- Vector data can be displayed in three dimensions if the lines are attributed with z values, modified or changed relative to user need, or layered to allow for turning off and on the viewing of different information.
- vector maps are particularly useful for displaying geographic data.
- Vector maps are used to display boundaries or lines that denote the position and extent of features, such as county boundaries or lines denoting stream and river systems. It is also very easy to view or manipulate the data underlying a vector map, for example to view or change the elevation of a feature.
- vector maps are drawn from a data set which describes the locations of features shown, they are often inherently georeferenced. Georeferencing is the process of relating source coordinates to referenced geographic coordinates, which are typically in standard latitude/longitude. An image or a vector file is georeferenced to be used within a mapping/geographic environment. In a vector map, the data from which the map is drawn will typically already include a geographic coordinate set.
- the preferred embodiment provides a system and method for performing flood zone determinations using scanned, georeferenced, digital raster map images.
- the user to determine the flood zone classification of a particular property, first enters the street address, or full legal address, into a data processing system.
- the system determines, from the address, which raster map includes that particular property.
- the system retrieves that map, and utilizes georeferencing information to locate the property on the raster map.
- the user can visually verify the location of the property as marked on the displayed raster map, and can at that point examine the flood zone indications on the raster map.
- the system can compare the geographic coordinates of the property against a database of flood zone boundaries for an automated flood zone determination.
- the system can also generate, store, and produce flood zone certificates according to the flood zone determination.
- FIG. 1 depicts a data processing system in accordance with a preferred embodiment of the present invention
- FIG. 2 is an exemplary raster map, in accordance with the preferred embodiment
- FIG. 3 is an exemplary vector map, corresponding to the raster map of FIG. 2, in accordance with a preferred embodiment of the present invention.
- FIG. 4 is a flowchart of a process in accordance with a preferred embodiment of the present invention.
- Data processing system 100 includes processor 102 and associated L 2 Cache 104 , which in the exemplary embodiment is connected in turn to a system bus 106 .
- System memory 108 is connected to system bus 106 , and may be read from and written to by processor 102 .
- I/O bus bridge 110 Also connected to system bus 106 is I/O bus bridge 110 .
- data processing system 100 includes graphics adapter 118 connected to bus 106 , receiving user interface information for display 120 .
- Peripheral devices such as nonvolatile storage 114 , which may be a hard disk drive, and keyboard/pointing device 116 , which may include a conventional mouse, a trackball, or the like, are connected to I/O bus 112 .
- data processing system 100 might also include a compact disk read-only memory (CD-ROM) or digital video disk (DVD) drive, a sound card and audio speakers, and numerous other optional components. All such variations are believed to be within the spirit and scope of the present invention.
- Data processing system 100 is provided solely as an example for the purposes of explanation and is not intended to imply architectural limitations.
- the data processing system described above can also include one or more image scanners, to convert a map from paper format to a digital raster map.
- the preferred embodiment provides a system and method for performing flood zone determinations using scanned, georeferenced, digital raster map images.
- the user to determine the flood zone classification of a particular property, first enters the street address, or fall legal address, into a data processing system.
- the system determines, from the address, which raster map includes that particular property.
- the system retrieves that map, and utilizes georeferencing information to locate the property on the raster map.
- the user can visually verify the location of the property as marked on the displayed raster map, and can at that point examine the flood zone indications on the raster map.
- the system can compare the geographic coordinates of the property against a database of flood zone boundaries for an automated flood zone determination.
- the system can also generate, store, and produce flood zone certificates according to the flood zone determination.
- FIG. 2 is an exemplary raster map, in accordance with the preferred embodiment.
- This exemplary map shows a scanned image from a Federal Emergency Management Agency (FEMA) paper map.
- FEMA Federal Emergency Management Agency
- FIG. 3 is an exemplary vector map, corresponding to the raster map of FIG. 2, in accordance with a preferred embodiment of the present invention.
- This map shows the same area as the map in FIG. 2, but is created by a computer system from a database describing the locations of features such as the streets shown.
- each feature shown on a vector map such as this will already be georeferenced, in that the geographic coordinates of each feature will also be recorded in the underlying data.
- the address of the property is entered into the system (step 400 ), and its location, in longitude and latitude, is determined by the data processing system, using a conventional geocoding application (step 405 ).
- the data processing system determines the raster map image or images that contain the location of the property as determined above (step 410 ). This is done, in the preferred embodiment, by performing point in polygon tests of the location of the property against the polygons defining the map boundaries.
- the system then displays the selected raster map image or images on the system display, and marks on each map the location of the property (step 415 ). If multiple maps are selected, each map image appears, allowing the user to display each image as desired.
- the user determines which of the maps is, in fact, the correct one that provides a flood zone classification for the property (step 420 ). If only one map image was selected, the user verifies that it is the correct image.
- the user then examines flood zone notations on the map at the property's location and visually determines its flood zone status (step 425 ).
- the system will generate a flood certificate which includes the property description or address, the flood zone designation, and any other information entered by the user (step 430 ).
- the flood certificate is stored on the computer from which location it can be delivered elsewhere by letter, fax, email, or other alternate methods (step 435 ).
- the software component of the data processing system stored in the non-volatile storage of the data processing system, includes several components:
- a georeferencing component which allows longitudes and latitudes to be associated with points on the raster map images, as described more fully below.
- a geocoding component which is used to convert addresses into corresponding longitude and latitude values.
- a database component which stores and retrieves information about the maps, including georeferencing parameters, map boundary polygons, federally provided map panel data (e.g., that contained in the Flood Map Status Information System (FMSIS) database) and any other map specific information.
- the database is also used to store and retrieve historical information about previously completed flood zone certifications.
- a map lookup component which utilizes the georeferencing information, the map boundary polygons, and the location of the property to determine which maps contain the property. This can be done, since the georeferencing allows the border of the map panel to be described in terms of longitude and latitude.
- a “point in polygon” algorithm is applied to see which map panels contain the address location within their borders.
- a map viewer/flood certificate generator which:
- [0048] c. Can display digital vector-based map(s) whose image is synchronized with the raster map. This means that the raster map and the vector map(s) always display the same geographic region. As the region selected in one map changes (by zooming, panning, scrolling, or other operation) so does the region displayed by the other map(s) change similarly.
- the georeferencing of the digital raster map provides the means by which the raster map and the vector-based map(s) may be synchronized.
- a digital map image is considered georeferenced if a pair of mathematical functions, f, and g, have been defined that can be used to convert back and forth between the coordinates of the map image (as defined by the pixels of the image) and the corresponding longitude and latitude of the location of that point. That is, f and g do the following:
- x and y represent the natural internal coordinate system of the map image.
- a digital raster map image uses the pixels of its image as a natural coordinate matrix.
- a vector-based map image uses longitude and latitude as its internal coordinate system; if so, it can be considered to be trivially georeferenced already. Therefore the functions f () and g () above are non-trivial georeferencing functions required to convert back and forth between coordinate systems.
- the system can easily locate specific geographic locations on the raster map. While the process of the preferred embodiment has assumed that the required paper map has been previously georeferenced, it is also possible that the property in question is only found on a traditional paper map. If this is the case, the user may scan the paper map into the data processing system to create a raster map image. The image may then be georeferenced to provide georeferencing functions for converting between the raster map image coordinates and the geographic coordinates. Once this has been done, the process of the preferred embodiment can be performed as described above.
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Abstract
A system and method for performing flood zone determinations using scanned, georeferenced, digital raster map images. The user, to determine the flood zone classification of a particular property, first enters the street address, or full legal address, into a data processing system. The system determines, from the address, which raster map includes that particular property. The system retrieves that map, and utilizes georeferencing information to locate the property on the raster map. The user can visually verify the location of the property as marked on the displayed raster map, and can at that point examine the flood zone indications on the raster map. Further, the system can compare the geographic coordinates of the property against a data base of flood zone boundaries for an automated flood zone determination. The system can also generate, store, and produce flood zone certificates according to the flood zone determination.
Description
- This application is a continuation of and claims priority from pending U.S. Patent Application “System and Method for Performing Flood zone Certifications” (09/537,161), filed Mar. 29, 2000. Furthermore, this application is related to and claims priority from the following pending applications: “System and Method for Georeferencing Digital Raster Maps” (09/537,849), filed Mar. 29, 2000 and “System and Method for Synchronizing Raster And Vector Map Images” (09/537,162) filed Mar. 29, 2000 which are hereby incorporated by reference.
- 1. Technical Field
- The present invention generally relates to analysis of geographic features and characteristics, and in particular to a system and method for performing flood zone determinations.
- 2. Description of the Related Art
- Today, before a real property is bought, sold, or insured, it is common practice to examine the property for the risk of flooding. This is commonly done by examining the flood zone the property falls into based on its location and elevation. The Federal Emergency management Agency (FEMA) publishes a library of ten of thousands of paper maps showing various types of flood zones and their location in the United States. A flood zone determination on a property is frequently done in the following way.
- 1. The address of the property is examined, and the location of the property is determined (perhaps through the use of a geocoding system, or by examining an available street map).
- 2. A map analyst attempts to determine which of the many thousands of FEMA flood maps will contain this property.
- 3. The map analyst goes to a map storage area and retrieves the desired map, often examining several maps before making a final decision.
- 4. Having retrieved the paper map, the map analyst next determines where, precisely, the property is located on the map.
- 5. Finally, the map analysis examines flood zone notations on the map at the property's location in order to determine its flood zone status.
- This process can be somewhat improved by scanning the paper FEMA maps into a computer to produce a digital raster map, which can be retrieved and viewed as necessary. A digital raster map is a computerized map image that resembles a conventional paper map in that it presents an image of the mapped area, but has no additional underlying data associated with the features of the map. A raster map is typically created by scanning a conventional paper map, and is a grid-based map composed of pixels (or dots) of color or black & white. Each pixel in the grid can be referenced by the pixel coordinates, and has only one associated value, indicating the color of that pixel. Raster images are commonly referred to as “bit mapped” images.
- A vector map uses lines and polygons, rather than pixels, to describe an image. Unlike a raster map, in which the map image is simply stored as a grid of pixels, when a vector map is displayed, it is drawn from a set of underlying data. The vector map is created through the placements of nodes on a plane and connecting those nodes with lines. Vector lines can be attributed with tables of data such as elevations, values, names or other information relative to the line. Vector data can be displayed in three dimensions if the lines are attributed with z values, modified or changed relative to user need, or layered to allow for turning off and on the viewing of different information.
- Because of their feature attribution properties, vector maps are particularly useful for displaying geographic data. Vector maps are used to display boundaries or lines that denote the position and extent of features, such as county boundaries or lines denoting stream and river systems. It is also very easy to view or manipulate the data underlying a vector map, for example to view or change the elevation of a feature.
- Also, because vector maps are drawn from a data set which describes the locations of features shown, they are often inherently georeferenced. Georeferencing is the process of relating source coordinates to referenced geographic coordinates, which are typically in standard latitude/longitude. An image or a vector file is georeferenced to be used within a mapping/geographic environment. In a vector map, the data from which the map is drawn will typically already include a geographic coordinate set.
- Modern GIS systems normally make use of digital vector based map information. However, a vast legacy of paper based map information exists. It is very expensive and time consuming to convert all of the information on these paper maps over to a digital vector format. In many cases the scope and expense of such conversions render them completely impractical. However, even when a complete conversion to digital vector-based format is not possible, it is still possible to obtain some of the benefits of computerized map systems, first by converting the paper maps to digital raster maps (by scanning them), and then by georeferencing the raster image. After georeferencing, there should be a clear relationship between the pixel coordinates in the raster map, and the geographic coordinates of the feature represented by that pixel.
- Since flood zone determinations are typically performed using paper FEMA maps, it would be desirable to provide a system and method for performing flood zone certifications that is faster and can be performed less expensively than the process described above.
- It is therefore one object of the present invention to provide an improved method for analysis of geographic features and characteristics.
- It is another object of the present invention to provide an improved system and method for performing flood zone determinations.
- The foregoing objects are achieved as is now described. The preferred embodiment provides a system and method for performing flood zone determinations using scanned, georeferenced, digital raster map images. The user, to determine the flood zone classification of a particular property, first enters the street address, or full legal address, into a data processing system. The system determines, from the address, which raster map includes that particular property. The system retrieves that map, and utilizes georeferencing information to locate the property on the raster map. The user can visually verify the location of the property as marked on the displayed raster map, and can at that point examine the flood zone indications on the raster map. Further, the system can compare the geographic coordinates of the property against a database of flood zone boundaries for an automated flood zone determination. The system can also generate, store, and produce flood zone certificates according to the flood zone determination.
- The above as well as additional objectives, features, and advantages of the present invention will become apparent in the following detailed written description.
- The novel features believed characteristic of the invention are set forth in the appended claims. The invention itself however, as well as a preferred mode of use, further objects and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, wherein:
- FIG. 1 depicts a data processing system in accordance with a preferred embodiment of the present invention;
- FIG. 2 is an exemplary raster map, in accordance with the preferred embodiment;
- FIG. 3 is an exemplary vector map, corresponding to the raster map of FIG. 2, in accordance with a preferred embodiment of the present invention; and
- FIG. 4 is a flowchart of a process in accordance with a preferred embodiment of the present invention.
- With reference now to the figures, and in particular with reference to FIG. 1, a block diagram of a data processing system in which a preferred embodiment of the present invention may be implemented is depicted.
Data processing system 100 includesprocessor 102 and associatedL2 Cache 104, which in the exemplary embodiment is connected in turn to asystem bus 106.System memory 108 is connected tosystem bus 106, and may be read from and written to byprocessor 102. - Also connected to
system bus 106 is I/O bus bridge 110. In the exemplary embodiment,data processing system 100 includesgraphics adapter 118 connected tobus 106, receiving user interface information fordisplay 120. Peripheral devices such asnonvolatile storage 114, which may be a hard disk drive, and keyboard/pointing device 116, which may include a conventional mouse, a trackball, or the like, are connected to I/O bus 112. - The exemplary embodiment shown in FIG. 1 is provided solely for the purposes of explaining the invention and those skilled in the art will recognize that numerous variations are possible, both in form and function. For instance,
data processing system 100 might also include a compact disk read-only memory (CD-ROM) or digital video disk (DVD) drive, a sound card and audio speakers, and numerous other optional components. All such variations are believed to be within the spirit and scope of the present invention.Data processing system 100 is provided solely as an example for the purposes of explanation and is not intended to imply architectural limitations. - The data processing system described above can also include one or more image scanners, to convert a map from paper format to a digital raster map.
- The preferred embodiment provides a system and method for performing flood zone determinations using scanned, georeferenced, digital raster map images. The user, to determine the flood zone classification of a particular property, first enters the street address, or fall legal address, into a data processing system. The system determines, from the address, which raster map includes that particular property. The system retrieves that map, and utilizes georeferencing information to locate the property on the raster map. The user can visually verify the location of the property as marked on the displayed raster map, and can at that point examine the flood zone indications on the raster map. Further, the system can compare the geographic coordinates of the property against a database of flood zone boundaries for an automated flood zone determination. The system can also generate, store, and produce flood zone certificates according to the flood zone determination.
- FIG. 2 is an exemplary raster map, in accordance with the preferred embodiment. This exemplary map shows a scanned image from a Federal Emergency Management Agency (FEMA) paper map. This raster image shows a land area with flood zone indications, but would, in a computer system, contain no underlying data regarding the area shown.
- FIG. 3 is an exemplary vector map, corresponding to the raster map of FIG. 2, in accordance with a preferred embodiment of the present invention. This map shows the same area as the map in FIG. 2, but is created by a computer system from a database describing the locations of features such as the streets shown. Typically, each feature shown on a vector map such as this will already be georeferenced, in that the geographic coordinates of each feature will also be recorded in the underlying data.
- A process for determining the flood zone classification of a property, in accordance with the preferred embodiment, is described below:
- First, the address of the property is entered into the system (step400), and its location, in longitude and latitude, is determined by the data processing system, using a conventional geocoding application (step 405).
- Next, the data processing system determines the raster map image or images that contain the location of the property as determined above (step410). This is done, in the preferred embodiment, by performing point in polygon tests of the location of the property against the polygons defining the map boundaries.
- The system then displays the selected raster map image or images on the system display, and marks on each map the location of the property (step415). If multiple maps are selected, each map image appears, allowing the user to display each image as desired.
- The user determines which of the maps is, in fact, the correct one that provides a flood zone classification for the property (step420). If only one map image was selected, the user verifies that it is the correct image.
- The user then examines flood zone notations on the map at the property's location and visually determines its flood zone status (step425).
- After the user has verified the flood zone status, the system will generate a flood certificate which includes the property description or address, the flood zone designation, and any other information entered by the user (step430). The flood certificate is stored on the computer from which location it can be delivered elsewhere by letter, fax, email, or other alternate methods (step 435).
- The software component of the data processing system, stored in the non-volatile storage of the data processing system, includes several components:
- A georeferencing component, which allows longitudes and latitudes to be associated with points on the raster map images, as described more fully below.
- A geocoding component, which is used to convert addresses into corresponding longitude and latitude values.
- A database component, which stores and retrieves information about the maps, including georeferencing parameters, map boundary polygons, federally provided map panel data (e.g., that contained in the Flood Map Status Information System (FMSIS) database) and any other map specific information. The database is also used to store and retrieve historical information about previously completed flood zone certifications.
- A map lookup component, which utilizes the georeferencing information, the map boundary polygons, and the location of the property to determine which maps contain the property. This can be done, since the georeferencing allows the border of the map panel to be described in terms of longitude and latitude. A “point in polygon” algorithm is applied to see which map panels contain the address location within their borders.
- A map viewer/flood certificate generator, which:
- a. Displays the candidate maps returned by the map lookup component.
- b. Places a marker at the estimated location of the property on each of the candidate maps.
- c. Can display digital vector-based map(s) whose image is synchronized with the raster map. This means that the raster map and the vector map(s) always display the same geographic region. As the region selected in one map changes (by zooming, panning, scrolling, or other operation) so does the region displayed by the other map(s) change similarly. The georeferencing of the digital raster map provides the means by which the raster map and the vector-based map(s) may be synchronized.
- d. Provides a location for the map analyst to record the flood zone status of the property.
- e. Other information relevant to a flood zone certification is either entered by the map analyst, or is automatically entered from information stored in the database.
- The georeferencing process is described below. A digital map image is considered georeferenced if a pair of mathematical functions, f, and g, have been defined that can be used to convert back and forth between the coordinates of the map image (as defined by the pixels of the image) and the corresponding longitude and latitude of the location of that point. That is, f and g do the following:
- 1. If (x, y) represents a location on the digital map image, then f (x, y) =(Lon, Lat) represents the longitude and latitude of the corresponding physical location.
- 2. If (Lon, Lat) represents a physical location that lies within the region covered by the map, then g (Lon, Lat)=(x, y) represents the point on the digital map image that corresponds to that longitude and latitude.
- Here, x and y represent the natural internal coordinate system of the map image. Typically, as described above, a digital raster map image uses the pixels of its image as a natural coordinate matrix. However, in most cases, a vector-based map image uses longitude and latitude as its internal coordinate system; if so, it can be considered to be trivially georeferenced already. Therefore the functions f () and g () above are non-trivial georeferencing functions required to convert back and forth between coordinate systems.
- Once the raster map images of the preferred embodiment are georeferenced, the system can easily locate specific geographic locations on the raster map. While the process of the preferred embodiment has assumed that the required paper map has been previously georeferenced, it is also possible that the property in question is only found on a traditional paper map. If this is the case, the user may scan the paper map into the data processing system to create a raster map image. The image may then be georeferenced to provide georeferencing functions for converting between the raster map image coordinates and the geographic coordinates. Once this has been done, the process of the preferred embodiment can be performed as described above.
- It is important to note that while the present invention has been described in the context of a fully functional data processing system and/or network, those skilled in the art will appreciate that the mechanism of the present invention is capable of being distributed in the form of a computer usable medium of instructions in a variety of forms, and that the present invention applies equally regardless of the particular type of signal bearing medium used to actually carry out the distribution. Examples of computer usable mediums include: nonvolatile, hard-coded type mediums such as read only memories (ROMs) or erasable, electrically programmable read only memories (EEPROMs), recordable type mediums such as floppy disks, hard disk drives and CD-ROMs, and transmission type mediums such as digital and analog communication links.
- While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (22)
1. A method of determining a flood zone classification of a location, comprising:
receiving a location entry from a first source;
receiving from the first source an indication that a displayed map is a correct map for providing a flood zone classification for the location; and
automatically receiving a flood zone status associated with the location.
2. The method of wherein the location is an address.
claim 1
3. The method of wherein the address comprises at least a street address.
claim 2
4. The method of wherein the address comprises an indication of a governmental entity, the governmental entity being a state, a province, or a country.
claim 2
5. The method of where in the address comprises at least a city.
claim 2
6. The method of where in the address comprises a zip code.
claim 2
7. The method of where in the address comprises a postal code.
claim 2
8. The method of where in the location comprises a longitude and a latitude.
claim 1
9. The method of further comprising selecting a map to display.
claim 1
10. The method of wherein the act of receiving an entry comprises receiving a verification of a flood zone classification.
claim 1
11. The method of further comprising the act of receiving an indication that a flood zone certificate is desired.
claim 1
12. The method of further comprising the act of directing a device to provide a flood zone certificate.
claim 1
13. The method of wherein the device is a device capable of printing a paper copy.
claim 12
14. The method of wherein the device is a computing platform capable of generating an electronic edition of a flood zone certificate.
claim 12
15. The method of wherein the flood zone certificate comprises at least a flood zone designation.
claim 12
16. The method of wherein the flood zone certificate comprises a description of the location.
claim 12
17. A computer memory containing a code capable of determining a flood zone classification of a location, and thereby turning a general computing platform into a specific computing machine, by:
receiving a location entry from a first source;
receiving from the first source an indication that a displayed map is a correct map for providing a flood zone classification for the location; and
automatically receiving a flood zone status associated with the location.
18. The method of further comprising the act of receiving an indication that a flood zone certificate is desired.
claim 17
19. The method of further comprising the act of directing a device to provide a flood zone certificate.
claim 17
20. A computer readable medium whose contents cause the transformation of a computer system into a flood zone classification system, by:
receiving a location entry from a first source;
receiving from the first source an indication that a displayed map is a correct map for providing a flood zone classification for the location; and
automatically receiving a flood zone status associated with the location;
receiving from the first source an indication that a flood zone certificate is desired; and
directing a device to provide a flood zone certificate.
21. A computer memory containing a data structure capable of determining a flood zone classification of a location, by:
receiving a location entry from a first source;
receiving from the first source an indication that a displayed map is a correct map for providing a flood zone classification for the location; and
automatically receiving a flood zone status associated with the location;
receiving from the first source an indication that a flood zone certificate is desired; and
directing a device to provide a flood zone certificate.
22. The method of wherein the location is an address that comprises an indication of a governmental entity, the governmental entity being a state, a province, or a country.
claim 21
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US09/821,388 US20010032050A1 (en) | 2000-03-29 | 2001-03-29 | System and method for performing flood zone certifications |
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- 2001-03-29 US US09/821,388 patent/US20010032050A1/en not_active Abandoned
- 2001-03-29 AU AU2001251110A patent/AU2001251110A1/en not_active Abandoned
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US6631326B1 (en) | 2003-10-07 |
US6678615B2 (en) | 2004-01-13 |
US20010034579A1 (en) | 2001-10-25 |
AU2001251110A1 (en) | 2001-10-08 |
WO2001073585A2 (en) | 2001-10-04 |
US20030009287A1 (en) | 2003-01-09 |
WO2001073585A3 (en) | 2002-05-23 |
US6842698B2 (en) | 2005-01-11 |
US20040078143A1 (en) | 2004-04-22 |
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