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343 <br /> flood event having a 1-percent chance of being equaled or exceeded in any given year. <br /> A LOMC reflects an official revision/amendment to an effective FIRM. <br /> If the LOMC request is granted, property owners may be eligible for lower flood <br /> insurance premiums or the option to not purchase flood insurance. Applicants can now <br /> use the Online LOMC, an internet-based tool, to easily request a Letter of Map <br /> Amendment (LOMA). A LOMA is a letter from FEMA stating that an existing structure or <br /> parcel of land - that is on naturally high ground and has not been elevated by fill - would <br /> not be inundated by the base flood. This new tool is a convenient way for applicants to <br /> upload all information and supporting documentation and check the status of their <br /> application online. <br /> For more information please utilize the following link: https://www.fema.gov/change® <br /> flood®zone®designation®online®letter®map®change <br /> What is a Flood Insurance Study (FIS)? <br /> A Flood Insurance Survey (FIS) is a compilation, analysis, and presentation of flood <br /> risks for water features (i.e. streams, rivers, lakes, etc.) within a given community. The <br /> completed study contains detailed flood elevation data for use by local communities in <br /> development of floodplain management standards as well as serving as a central <br /> information source in the creation of a Flood Insurance Rate Map (FIRM). <br /> What `data' is utilized is preparing a FIS? <br /> In preparing a FIS there is a multitude of data collected and reviewed. This includes, <br /> but is not limited to: <br /> 1. Rainfall data. <br /> 2. Hydrologic Analyses — including the identification of water surface elevations on <br /> water features as well as studies outlining the amount of water flowing in a given <br /> water feature during storm and flood events. <br /> 3. Discharge rates of water features — the identification of the water flow or carrying <br /> capacity of a given water feature. This would include review of existing <br /> topographical maps/data in and around a water feature, review of rain gage data, <br /> and soil information to ascertain water infiltration rates. <br /> 4. Existing stormwater infrastructure (i.e. culverts, drainage ditches, etc.) in a given <br /> area. <br /> 5. Review of the composition, including the height, width, depth, and slope, of a <br /> water feature. <br /> 6. Historical flood events. <br /> Who prepares a FIS? <br />