Draft National Flood Hazard Layer
The Draft National Flood Hazard Layer is for early awareness of possible changes to regulatory flood map information. Until the data becomes effective and it appears in the National Flood Hazard Layer, the data cannot be used to rate flood insurance policies or enforce the federal mandatory purchase requirement.
Letter Of Map Revision
A Letter of Map Revision is a document that officially revises a portion of the effective NFIP map according to requirements and procedures outlined in Part 65 of the NFIP regulations. A LOMR allows FEMA to revise flood hazard information on an NFIP map via letter without physically revising and reprinting the entire map panel. This process typically takes less time and is less expensive than a PMR.
LOMRs include the revised portion of the flood hazard map, affected flood profiles, and floodway data tables from the Flood Insurance Study report as attachments to the letter. LOMRs are essentially like PMRs in that they are used to change flood risk zones, floodplain and/or floodway delineations, flood elevations, and/or planimetric features however, because of their limited distribution, LOMRs are primarily intended for small areas of change and areas where flood hazards are typically decreasing.
FEMA charges the requesters of LOMRs a fee for review of the flood hazard data submitted in support of certain types of requests such as those concerning structural measures. As with PMRs, a LOMR must be requested through the CEO of the community because the community is responsible for the adoption of the revised flood hazard information into the community’s floodplain management ordinances and regulations.
What Is A Flood Insurance Rate Map & How Do I Use It
A FIRM is a map created by the NFIP for floodplain management and insurance purposes. Digital versions of these maps are called DFIRMs.
A FIRM will generally show a community’s base flood elevations, flood zones, and floodplain boundaries. As a property owner/renter, you can use this map to get a reliable indication of what flood zone you’re in. However, maps are constantly being updated due to changes in geography, construction and mitigation activities, and meteorological events. Therefore, for a truly accurate determination, contact your insurance agent or company, or your community floodplain manager.
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Federal Emergency Management Agency Flood Insurance Flood Preparedness And Availability Of Flood Insurance Rate
The City of Apopka can provide our residents and businesses with of some very important information regarding the risk of floods in the City. The City is a participant in the Federal Emergency Management Agency Community Rating System , a National Flood Insurance Program .
Please call the City of Apopka: Engineering Division at 407-703-1718 if you have questions or would like additional flood risk information in your area.
Flood Risk And New Building

To emphasize that flood risks are changing and to make sure property owners understand this is coming, Monroe County Building Department will be requiring owners to sign a form with permits that acknowledge the issuance of these new PRELIMINARY coastal flood maps and the fact that these maps may indicate a future change to the required elevation of a building currently being permitted.
This is intended to help homeowners understand that what they might be proposing to build today, under the existing flood maps, could become non-conforming after the maps are changed, thereby making their flood risk and insurance costs greater. Owners should think about designing their improvements to meet the proposed PRELIMINARY maps to assure they are addressing potential future risks.
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No Matter Where You Live Or Work Some Risk Of Flooding Exists
Learn more about your flood risk and secure the insurance protection you need to protect your home and financial security.
- What is the moderate- to low-risk flood zone?
Moderate- to low-risk flood areas are designated with the letters B, C, and X on FEMA flood maps.
In these areas, the risk of being flooded is reduced, but not completely removed. One in three insurance claims come from moderate- to low-risk flood areas.
- What is the high-risk flood zone?
High-risk flood areas begin with the letters A or V on FEMA flood maps.
These areas face the highest risk of flooding. If you own a property in a high-risk zone and have a federally backed mortgage, you are required to purchase flood insurance as a condition of that loan.
Learn more
Have questions about your homes flood risk? Contact your insurance agent or call the National Flood Insurance Program 877-336-2627.
FEMA | National Flood Insurance Program
500 C St SW,Washington,D.C.20472
Checking The Status Of Your Request
Property owners or other persons who wish to follow the progress of a particular PMR, LOMR, or other map revision are advised to consult the community’s Floodplain Administrator. This is the local official who keeps all of the community’s flood hazard maps and FIS report, and who corresponds with FEMA at various stages of the revision process. Often this is an official such as the city/county engineer or the director of planning or zoning administrator.
For assistance, contact the FEMA Map Information eXchange or call toll free at 1-877-FEMA MAP .
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Letter Of Map Amendment
If you believe your property was incorrectly included in a National Flood Insurance Program identified Special Flood Hazard Area , you may submit an application to FEMA for a formal determination of the propertys location and/or elevation relative to the SFHA. The SFHA is the area that has a 1-percent or greater chance of flooding in any given year this area is also referred to by some as the 1-percent-annual-chance floodplain, base floodplain or the 100-year floodplain.
After FEMA reviews the map change request, it will issue a Determination Document, either approving or denying the map change. If FEMA grants the map amendment or revision request, the property owner may no longer be required to pay flood insurance. The property owner may send the Determination Document to their lender and request that the federal flood insurance requirement for the structure be removed.
For more information and to apply, visit FEMA.
This Option Is Great And We Are Very Happy When We Can Get This Option For Our Clients The Underwriter Seems To Be Writing Almost All Risks However They Do Not Write Any Property In A Designated Floodway Or Has A Depth Of
In our example, with our BFE being 8, they will not accept this risk if the lowest floor is 4. They will not take anything that has had a flood loss. They offer limited coverage for basements and do not require an Elevation Certificate to rate as a percentage of coverage for loss of use. If you want coverage for other structures, that will need to be added.
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Topography Used For Modeling And Mapping
Topography used by FEMA for modeling and mapping differs from Monroe County mobile LiDAR data collected post-hurricane Irma in seven areas throughout Monroe County. In these specific areas, the FEMA topography is lower than the mobile LiDAR data by 0.5 to 1 ft . Since the ground elevations influence the extent of flooding and wave action along the coast, this issue could have an impact on the overland wave modeling and flood zone mapping.
Woods Hole Group is currently working to further investigate the influence of these areas of concern on the FIRMs, and to develop the technical information necessary for an appeal of the December 2019 maps.
Flood & Flood Insurance Information
Resources and information about Charlotte Countys flood risks, flood insurance and flood protection services.
FEMA has a tool to estimate the cost of flood damage based on the size of the home and the depth of the flood waters. You can reduce or mitigate your risk by purchasing flood insurance, retrofitting, moving out of the floodplain, or elevating your structure. Find out how much a flood can cost you: FEMA Flood Damage Cost Calculator | 2017 Flood Loss Estimations
FEMA announces Dec. 15, 2022, as the effective date for new Flood Risk Maps. FEMA has issued the Letter of Final Determination and Final Summary of Map Changes for Charlotte County. Many past Letters of Map Change will be superseded when the new maps become effective.
The new FEMA Flood Risk Maps will usher in a new FEMA designated flood zone known as the Coastal A Zone. This area is based on the Limit of Moderate Wave Action and can experience wave crests of 1.5′ – 3′. The Coastal A Zone has higher construction standards.These new maps will be in the most current vertical datum, known as the North American Vertical Datum of 1988 or NAVD88. The NAVD88 datum has an average difference in our area of 1.15′ than the current vertical datum used. Click on the flyers below to learn more about these changes.
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Orange County Library: North Orange Branch In Apopka
The Orange County Library North Orange Branch is located at 1211 East Semoran Boulevard, Apopka, FL 32703. They can be reached by visiting the local branch, by email at , or by Phone: 407-835-7323.
As an example, information at our local branch includes:
- Coastal construction manual: principles and practices of planning, siting, designing, constructing, and maintaining residential buildings in coastal areas / FEMA.
- Elevated residential structures / the American Institute of Architects Foundation / FEMA.
- Above the flood: elevating your flood prone house / Federal Emergency Management Agency / FEMA.
- Answers to questions about the NFIP / FEMA.
- Protecting manufactured homes from floods and other hazards: a multi-hazard foundation and installation guide / FEMA.
- Reducing damage from localized flooding: a guide for communities / U.S. Department of Homeland Security / FEMA.
New Preliminary Coastal Flood Maps

Coastal Flood Maps, otherwise known as Flood Insurance Rate Maps are used to determine the minimum elevation needed for construction to reduce the chances of flooding, as well as construction methods required in certain zones.
In 2019, Federal Emergency Management Agency released new PRELIMINARY coastal flood maps. These maps may eventually replace the current flood maps which are based on 30-plus-year-old studies.
While FEMA has emphasized that these are only PRELIMINARY maps, the City of Boca Raton wants to ensure all residents and business owners are aware of the potential for a change in flood risk for their property so that they can be more proactive in reducing their flood risk.
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Hydrodynamic/wave Modeling Of Reefs
When considering reefs in the hydrodynamic/wave model, FEMA used friction values lower than recommended by the scientific literature . Since friction created by the reefs acts to dissipate the amount of wave energy reaching the shoreline, this issue could have an impact on the overland wave modeling and flood zone mapping.
City Of Apopka Floodplain Information Library
The Engineering Division is located on the 2nd Floor of City Hall. Our library contains FEMA floodplain related books, pamphlets, and other materials. Material may be reviewed in our office. As an example, our Engineering Division Library includes:
- Floodplain Management in Florida Quick Guide, by Florida Division of Emergency Management
- FEMA NFIP Answers to Questions About the NFIP
- FEMA Protecting Buildings Utility Systems from Flood Damage
- FEMANFIP Increased Cost of Compliance Coverage
- FEMA Home Builders Guide to Coastal Construction
- FEMA Reducing Damage from Localized Flooding
- FEMA NFIP Mandatory Purchase of Flood Insurance Guidelines
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Limit Of Moderate Wave Action
Flood maps in coastal areas may include a line called the Limit of Moderate Wave Action . The LiMWA marks the inland limit of the Coastal A Zone the part of the coastal SFHA referenced by building codes and standards where wave heights can be between 1.5 and 3 feet during a base flood event. Past events have shown that waves as small as 1.5 feet can cause foundation failure and structural damage to buildings.
Due to the higher risk of damage from waves to homes and other structures in the Coastal A Zone, FEMA encourages the practice of building to V Zone standards within this area. Many local building codes require that buildings in the Coastal A Zone be built to V Zone standards. However, the LiMWA has no significance for NFIP flood insurance premiums.
Overland Modeling Of Mangroves
FEMAs characterization of mangrove height and density differs from data available from the 2014-2016 South Florida Water Management District for four distinct areas of the Keys . Since mangroves act to dissipate the amount of wave energy reaching the shoreline, this issue could have an impact on the overland wave modeling and flood zone mapping.
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Fema Flood Zones & Explanations
Annual Probability of Flooding of 1% or greater | |
---|---|
A | Subject to 100-year flood. Base flood elevation undetermined. |
AE or A1-A30 | Both AE and A1-A30 represent areas subject to 100-year flood with base flood elevation determined. |
AH | Subject to 100-year shallow flooding with average depth of 1-3 feet. Base flood elevation determined. |
AO | Subject to 100-year shallow flooding with average depth of 1-3 feet. Base flood elevation undetermined. |
A99 | Subject to 100-year flood, with federal flood protection system under construction. Base flood elevation undetermined. |
V | Subject to 100-year flood and additional velocity hazard . Base flood elevation undetermined. |
VE or V1-V30 | Both VE and V1-V30 represent areas subject to 100-year flood and additional velocity hazard . Base flood elevation determined. |
In SFHA | Areas in a “Special Flood Hazard Area” . Subject to 1% annual chance flooding. No distinctions have been made between the different flood hazard zones that may be included within the SFHA. |
Flood Prone Area | An area designated as a “Flood Prone Area” on a map prepared by USGS and the Federal Insurance Administration. This area has been delineated based on available information on past floods. This is an area inundated by 1% annual chance flooding for which no base flood elevations have been determined. |
Annual Probability of Flooding of Less than 0.2% | |
---|---|
X | Areas outside the 500-year flood plain with less than 0.2% annual probability of flooding. |
Undetermined |
---|
Fema Has Issued New Preliminary Flood Maps Affecting Sarasota County Property Owners
New flood insurance rate maps, or FIRMs, could impact your insurance requirements and premiums. Flood risk changes over time due to construction, growth, environmental impacts, floodplains widening or shifting and changes to local watersheds.
Sarasota County has compiled resources to help you determine whether your property or business has been affected by the new FIRMs and how you can find more information.
Please note: These changes do not affect hurricane evacuation levels, which may be viewed here.
You can attend one of several open houses where FEMA and local officials will answer questions about the proposed changes.
Visit the interactive map here to see if your property may be impacted.
For information about the appeals and comment process,
A Flood Insurance Rate Map is an official map of a community created by FEMA. FIRMs show both the Special Flood Hazard Areas and the insurance risk premium zones applicable to the community.
The SFHA is a high-risk area defined as land with a 1 percent chance of flooding in any given year. Land in the SFHA is identified by zones that start with A and V. Land outside the SFHA is identified by zones that start with X.
Development in the SFHA must comply with the Sarasota County Floodprone Areas Ordinance. Flood insurance is required for residential and commercial buildings in the SFHA with federally backed mortgages. This is referred to as the Mandatory Purchase Requirement.
If the property is changing from Zone X or X500 to a SFHA
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Releasing Preliminary Florida Flood Maps
The release of preliminary flood hazard maps, or Flood Insurance Rate Maps , is an important step in the mapping lifecycle for a community. This release provides community officials, the public, and other stakeholders with their first view of the current flood hazards, which include changes that may have occurred in the flood risks throughout the community, or county, since the last flood hazard map was published.
Flood Maps: A Risk Management Must

Flood hazard maps, also known as Flood Insurance Rate Maps , are important tools in the effort to protect lives and properties in Osceola County. By showing the extent to which areas of the county – and individual properties – are at risk for flooding, flood maps help business and property owners make better financial decisions about protecting their property. These maps also allow community planners, local officials, engineers, builders and others to make important determinations about where and how new structures and developments should be built.
A Better Picture of Flood Hazards
Over time, water flow and drainage patterns have changed dramatically due to surface erosion, land use and natural forces. The likelihood of inland and riverine flooding in certain areas has changed along with these factors. New digital mapping techniques will provide more detailed, reliable and current data on county flood hazards. The result: a better picture of the area’s most likely to be impacted by flooding and a better foundation from which to make key decisions.
The flood map modernization project is a joint effort between Osceola County and the Federal Emergency Management Agency , in cooperation with municipal, association and private sector partners.
Flood Insurance Requirements and Options
When the new maps are adopted, flood insurance requirements will change. However, options exist that will allow property owners to save money while still protecting their property.
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