Coastal Hazard Bulletin
Issue No. 3
The purpose of the Coastal Hazard Mailing List is to provide up-to-date coastal flood hazard information pertinent to the Federal Emergency Management Agency and the National Flood Insurance Program. Subscribers will receive new mailings on a monthly basis.
Schedule of CHAMP Database Development
CHAMP is composed of six sub-programs. The Bulletin schedule for developing these individual programs for your CHAMP database is presented below.
CHAMP Program and Bulletin Date:
- Program 1: Transect Description/Parameter Entry - July 2001
- Program 2: Transect Data Entry and Editing - August 2001
- Program 3: Erosion Treatment - September 2001
- Program 4: Wave Height Analysis - October 2001
- Program 5: Wave Runup Analysis - November 2001
- Program 6: Summary Tables and Graphics for Mapping - December 2001
A summary of these programs is presented in the 'General Operating Procedure for Running CHAMP' flowchart on page 4 of the CHAMP User's Manual. This document is available through the CHAMP Help Menu or at: http://www.fema.gov/plan/prevent/fhm/dl_champ.shtm.
The User's Manual should be used for description of the detailed operating procedures of the CHAMP database for this and future bulletin mailings.
Development of Program 1 - Transect Description/Parameter Entry
Program 1 includes three tasks, which are discussed in detail on pp.10-17, and summarized on p.21 (Steps 1-3) of the User's Manual.
Import Data
Attached please find the file 'demo.csv' which includes station/elevation pairs for two transects. Save this file to your local directory (i.e., C:\Program Files\Champ). These data can be imported into your CHAMP database by selecting 'Import Data' from the 'File' drop-down menu (See pp.10-12 of the User's Manual for detailed 'Import Wizard' instructions).General Project Information
Step 1 of the Import Wizard prompts the user to enter General Project Information, including project title, modeler name, community name, client name, vertical datum, projection, transect unit system, and estimated FIRM scale. Ensure to enter 'English' for the 'Transect Unit System'. Step 2 of the Import Wizard prompts the user to use the 'Browser' button to select the file where the transect data are located. The user then selects the data type, and then the data field that contains that particular data type.General Transect Information
On the main Project Information window, start by clicking on the pull down menu in the upper right-hand corner of the window labeled 'Transect ID' to select a transect. Then select the 'General' Main Menu Button Bar Icon to display the Transect Description and Parameters windows (See p.14 of the User's Manual for detailed instructions). In the Description window, enter transect description information into your database for each transect (or use the 'Copy' button). In the Parameter window, enter water-surface elevation and wave parameter, and source information as listed below (these data will be used for subsequent programs):
Flooding Source: Atlantic Ocean 1% SWEL: 11.0 ft 10% SWEL: 6.6 ft Mean High Water Elev: - 2 ft Mean Low Water Elev: -2 ft Fetch Length: 24 miles (considered unlimited) Significant wave Height: 28 ft Deepwater Wave Period: 11.7 sec Wave Setup Magnitude: 2 ft Other Flooding Source: Inland Bay; 1% SWEL: 7 ft (only for transect 2) |
Helpful Hints
Import Data Filter - In the Import Wizard Step 2, transect data can be filtered if import data sets are large (i.e., LIDAR elevation data). Data can be filtered by the change in slope along the profile. Simply enter the minimal absolute angle (in degrees) allowed between any three consecutive data points at the bottom of the Step 2 window. If the angle made by the three points is less than the given angle, the middle point will be removed from the imported transect.
Transect Addition, Deletion, or Renaming - To add, delete, or rename a transect, click on the 'Transect' Menu from the initial 'Project Information' window. Three items in the drop-down menu include Edit, Add, or Delete transect. Selecting one of these options brings up an additional window to perform the required operation.
Preparation for the August 2001 Bulletin
In preparation for the August 2001 Bulletin, you should simply complete the exercise discussed in Part 2 above, and briefly familiarize yourself with the six CHAMP sub-programs as discussed in the User's Manual.
Next month, we will continue to develop your CHAMP database by working on Program 2 - Transect Data Entry & Editing.
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Last Modified: Monday, 18-Jun-2007 11:57:20 EDT