Changes in Flood Hazard Determinations
Federal RegisterMay 18, 2026
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DEPARTMENT OF HOMELAND SECURITY
Federal Emergency Management Agency
[Docket ID FEMA-2025-0002; Internal Agency Docket No. FEMA-B-2603]
Changes in Flood Hazard Determinations
AGENCY:
Federal Emergency Management Agency, Department of Homeland Security.
ACTION:
Notice.
SUMMARY:
This notice lists communities where the addition or modification of Base Flood Elevations (BFEs), base flood depths, Special Flood Hazard Area (SFHA) boundaries or zone designations, or the regulatory floodway (hereinafter referred to as flood hazard determinations), as shown on the Flood Insurance Rate Maps (FIRMs), and where applicable, in the supporting Flood Insurance Study (FIS) reports, prepared by the Federal Emergency Management Agency (FEMA) for each community, is appropriate because of new scientific or technical data. The FIRM, and where applicable, portions of the FIS report, have been revised to reflect these flood hazard determinations through issuance of a Letter of Map Revision (LOMR), in accordance with Federal Regulations. The current effective community number is shown in the table below and must be used for all new policies and renewals.
DATES:
These flood hazard determinations will be finalized on the dates listed in the table below and revise the FIRM panels and FIS report in effect prior to this determination for the listed communities.
From the date of the second publication of notification of these
changes in a newspaper of local circulation, any person has 90 days in which to request through the community that the Assistant Administrator, Federal Insurance Directorate, Resilience reconsider the changes. The flood hazard determination information may be changed during the 90-day period.
ADDRESSES:
The affected communities are listed in the table below. Revised flood hazard information for each community is available for inspection at both the online location and the respective community map repository address listed in the table below. Additionally, the current effective FIRM and FIS report for each community are accessible online through the FEMA Map Service Center at
https://msc.fema.gov
for comparison.
Submit comments and/or appeals to the Chief Executive Officer of the community as listed in the table below.
FOR FURTHER INFORMATION CONTACT:
David N. Bascom, Acting Director, Engineering and Modeling Division, Federal Insurance Directorate, Resilience, FEMA, 400 C Street SW, Washington, DC 20472, or (email)
david.bascom@fema.dhs.gov;
or visit the FEMA Mapping and Insurance eXchange (FMIX) online at
https://www.floodmaps.fema.gov/fhm/fmx_main.html.
SUPPLEMENTARY INFORMATION:
The specific flood hazard determinations are not described for each community in this notice. However, the online location and local community map repository address where the flood hazard determination information is available for inspection is provided.
Any request for reconsideration of flood hazard determinations must be submitted to the Chief Executive Officer of the community as listed in the table below.
The modifications are made pursuant to section 201 of the Flood Disaster Protection Act of 1973, 42 U.S.C. 4105, and are in accordance with the National Flood Insurance Act of 1968, 42 U.S.C. 4001
et seq.,
and with 44 CFR part 65.
The FIRM and FIS report are the basis of the floodplain management measures that the community is required either to adopt or to show evidence of having in effect in order to qualify or remain qualified for participation in the National Flood Insurance Program (NFIP).
These flood hazard determinations, together with the floodplain management criteria required by 44 CFR 60.3, are the minimum that are required. They should not be construed to mean that the community must change any existing ordinances that are more stringent in their floodplain management requirements. The community may at any time enact stricter requirements of its own or pursuant to policies established by other Federal, State, or regional entities. The flood hazard determinations are in accordance with 44 CFR 65.4.
The affected communities are listed in the following table. Flood hazard determination information for each community is available for inspection at both the online location and the respective community map repository address listed in the table below. Additionally, the current effective FIRM and FIS report for each community are accessible online through the FEMA Map Service Center at
https://msc.fema.gov
for comparison.
(Catalog of Federal Domestic Assistance No. 97.022, “Flood Insurance.”)
Elizabeth Asche,
Assistant Administrator, Federal Insurance Directorate, Resilience, Federal Emergency Management Agency, Department of Homeland Security.
State and county
Location and case
No.
Chief executive
officer of
community
Community
map repository
Online location of
letter of map revision
Date of
modification
Community
No.
Arizona:
Graham
Town of Thatcher (24-09-0863P)
The Honorable Jenny Howard, Mayor, Town of Thatcher, 3700 West Main Street, Thatcher, AZ 85552
Public Works Department, 3700 West Main Street, Thatcher, AZ 85552
https://msc.fema.gov/portal/advanceSearch
Apr. 30, 2026
040117
Graham
Unincorporated areas of Graham County (24-09-0863P)
The Honorable Clay Mack, Chair, Graham County Board of Supervisors, 921 West Thatcher Boulevard, Safford, AZ 85546
Graham County General Services Building, 921 West Thatcher Boulevard, Safford, AZ 85546
https://msc.fema.gov/portal/advanceSearch
Apr. 30, 2026
040032
Maricopa
City of Buckeye (25-09-0055P)
The Honorable Eric Orsborn, Mayor, City of Buckeye, 530 East Monroe Avenue, Buckeye, AZ 85326
City Hall, 945 North 215th Avenue, Suite 137, Buckeye, AZ 85326
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
040039
Maricopa
City of Buckeye (25-09-0372P)
The Honorable Eric Orsborn, Mayor, City of Buckeye, 530 East Monroe Avenue, Buckeye, AZ 85326
City Hall, 945 North 215th Avenue, Suite 137, Buckeye, AZ 85326
https://msc.fema.gov/portal/advanceSearch
Apr. 20, 2026
040039
Maricopa
City of Buckeye (25-09-0623P)
The Honorable Eric Orsborn, Mayor, City of Buckeye, 530 East Monroe Avenue, Buckeye, AZ 85326
City Hall, 945 North 215th Avenue, Suite 137, Buckeye, AZ 85236
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
040039
Maricopa
City of Chandler (25-09-0313P)
The Honorable Kevin Hartke, Mayor, City of Chandler, 175 South Arizona Avenue, Chandler, AZ 85225
City Hall, 175 South Arizona Avenue, Chandler, AZ 85225
https://msc.fema.gov/portal/advanceSearch
Apr. 9, 2026
040040
Maricopa
City of Glendale (25-09-0021P)
The Honorable Jerry P. Weiers, Mayor, City of Glendale, 9494 West Maryland Avenue, Glendale, AZ 85305
City Hall, 200 West Washington Street, Phoenix, AZ 85003
https://msc.fema.gov/portal/advanceSearch
Apr. 10, 2026
040045
Maricopa
City of Phoenix (25-09-0641P)
The Honorable Kate Gallego, Mayor, City of Phoenix, 200 West Washington Street, 11th Floor, Phoenix, AZ 85003
City Hall, 200 West Washington Street, Phoenix, AZ 85003
https://msc.fema.gov/portal/advanceSearch
Apr. 10, 2026
040051
Maricopa
City of Scottsdale (25-09-0723P)
The Honorable Lisa Borowsky, Mayor, City of Scottsdale, 3939 North Drinkwater Boulevard, Scottsdale, AZ 85251
Stormwater and Floodplain Management, 7447 East Indian School Road, Scottsdale, AZ 85251
https://msc.fema.gov/portal/advanceSearch
Apr. 30, 2026
045012
Maricopa
Unincorporated areas of Maricopa County (25-09-0021P)
Jennifer Pokorski, Maricopa County Manager, 301 West Jefferson Street, Phoenix, AZ 85003
Flood Control District of Maricopa County, 2801 West Durango Street, Phoenix, AZ 85009
https://msc.fema.gov/portal/advanceSearch
Apr. 10, 2026
040037
Maricopa
Unincorporated areas of Maricopa County (25-09-0055P)
Jennifer Pokorski, Maricopa County Manager, 301 West Jefferson Street, Phoenix, AZ 85003
Flood Control District of Maricopa County, 2801 West Durango Street, Phoenix, AZ 85009
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
040037
Maricopa
Unincorporated areas of Maricopa County (25-09-0623P)
Jennifer Pokorski, Maricopa County Manager, 301 West Jefferson Street, Phoenix, AZ 85003
Flood Control District of Maricopa County, 2801 West Durango Street, Phoenix, AZ 85009
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
040037
Pima
City of Tucson (23-09-0429P)
The Honorable Regina Romero, Mayor, City of Tucson, 255 West Alameda Street, Tucson, AZ 85701
Planning and Development Services, 201 North Stone Avenue, 1st Floor, Tucson, AZ 85701
https://msc.fema.gov/portal/advanceSearch
Apr. 13, 2026
040076
Pima
Unincorporated Areas of Pima County (23-09-0429P)
Jan Lesher, County Administrator, Pima County, 115 North Church Avenue, Suite 231,Tucson, AZ 85701
Pima County Regional Flood Control District, 201 North Stone Avenue, 9th Floor, Tucson, AZ 85701
https://msc.fema.gov/portal/advanceSearch
Apr. 13, 2026
040073
Pinal
Town of Florence (25-09-0443P)
The Honorable Keith Eaton, CBO, CFM, CFO, Mayor, Town of Florence, 775 North Main Street, Florence, AZ 85132
Town of Florence, 775 North Main Street, Florence, AZ 85132
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
040084
California:
Alameda
City of Livermore (24-09-0948P)
Marianna Burch, City Manager, City of Livermore, 1051 South Livermore Avenue, Livermore, CA 94550
City Hall, 1051 South Livermore Avenue,Livermore, CA 94550
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
060008
Alameda
City of Pleasanton (24-09-0948P)
The Honorable Jack Balch, Mayor, City of Pleasanton, P.O. Box 520, Pleasanton, CA 94566
City Hall, 123 Main Street, Pleasanton, CA 94566
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
060012
Alameda
Unincorporated areas of Alameda County (24-09-0948P)
Susan S. Muranishi, Alameda County Administrator, 1221 Oak Street, Oakland, CA 94612
Alameda County Public Works Agency, 399 Elmhurst Street, Hayward, CA 94544
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
060001
Contra Costa
City of Concord (25-09-0389P)
The Honorable Carlyn Obringer, Mayor, City of Concord, 1950 Parkside Drive, Concord, CA 94519
City Hall, 1950 Parkside Drive, Concord, CA 94519
https://msc.fema.gov/portal/advanceSearch
Apr. 22, 2026
065022
Contra Costa
Unincorporated areas of Contra Costa County (25-09-0389P)
Monica Nino, Contra Costa County Administrator, 1025 Escobar Street, Martinez, CA 94553
Contra Costa County Public Works Department, 255 Glacier Drive, Martinez, CA 94553
https://msc.fema.gov/portal/advanceSearch
Apr. 22, 2026
060025
Fresno
Unincorporated areas of Fresno County (26-09-0081P)
Paul Nerland, Fresno County Administrative Officer, 2220 Tulare Street, 6th Floor, Fresno, CA 93721
Fresno County Clerk Office, 2220 Tulare Street, Fresno, CA 93721
https://msc.fema.gov/portal/advanceSearch
Apr. 30, 2026
065029
Orange
Unincorporated areas of Orange County (25-09-0245P)
Michelle Aguirre, CEO, Orange County, 400 West Civic Center Drive, Santa Ana, CA 92701
Orange County Public Works, 601 North Ross Street, Santa Ana, CA 92701
https://msc.fema.gov/portal/advanceSearch
Apr. 6, 2026
060212
Placer
City of Lincoln (24-09-1115P)
The Honorable Holly Andreatta, Mayor, City of Lincoln, 600 6th Street, Lincoln, CA 95648
City Hall, 600 6th Street, Lincoln, CA 95648
https://msc.fema.gov/portal/advanceSearch
Apr. 20, 2026
060241
Placer
Unincorporated areas of Placer County (24-09-1115P)
Daniel Chatigny, County Executive Officer, Placer County, 175 Fulweiler Avenue, Auburn, CA 95603
Placer County, Public Works Department, 3091 County Center Drive, Auburn, CA 95603
https://msc.fema.gov/portal/advanceSearch
Apr. 20, 2026
060239
Riverside
Unincorporated areas of Riverside County (24-09-0652P)
The Honorable V. Manuel Perez, Chair, Riverside County Board of Supervisors, 4080 Lemon Street, 5th Floor, Riverside, CA 92501
Riverside County Flood Control District Building, 1995 Market Street, Riverside, CA 92501
https://msc.fema.gov/portal/advanceSearch
Apr. 23, 2026
060245
San Bernardino
City of Colton (24-09-0652P)
The Honorable Frank J. Navarro, Mayor, City of Colton, 650 North La Cadena Drive, Colton, CA 92324
Corporate Yard, 160 South 10th Street, Colton, CA 92324
https://msc.fema.gov/portal/advanceSearch
Apr. 23, 2026
060273
Tulare.
City of Farmersville (25-09-0374P)
The Honorable Tina Hernandez, Mayor, City of Farmersville, 909 West Visalia Road, Farmersville, CA 93223
City Hall, 909 West Visalia Road, Farmersville, CA 93223
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
060405
Tulare
Unincorporated areas of Tulare County(25-09-0374P)
Jason T. Britt, County Administrative Officer, Tulare County, 2800 West Burrel Avenue, Visalia, CA 93291
Tulare County, Administration Building, 2800 West Burrel Avenue, Visalia, CA 93291
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
065066
Ventura
City of Camarillo (25-09-0983P)
Greg Ramirez, City Manager, City of Camarillo, 601 Carmen Drive, Camarilla, CA 93010
City Hall, 601 Carmen Drive, Camarillo, CA 93010
https://msc.fema.gov/portal/advanceSearch
Apr. 9, 2026
065020
Ventura
City of Thousand Oaks (25-09-0238P)
Andrew Powers, City Manager, City of Thousand Oaks, 2100 East Thousand Oaks Boulevard, Thousand Oaks, CA 91362
City Hall, 2100 East Thousand Oaks Boulevard, Thousand Oaks, CA 91362
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
060422
Ventura
Unincorporated areas of Ventura County (25-09-0983P)
The Honorable Janice S. Parvin, Chair, Board of Directors, Ventura County, 980 Enchanted Way, Suite 203, Simi Valley, CA 93065
Ventura County Government Center, 800 South Victoria Avenue, Ventura, CA 93009
https://msc.fema.gov/portal/advanceSearch
Apr. 9, 2026
060413
Colorado:
Adams
City of Thornton (25-08-0358P)
The Honorable Jan Kulmann, Mayor, City of Thornton, 9500 Civic Center Drive, Thornton, CO 80229
City Hall, 9500 Civic Center Drive,Thornton, CO 80229
https://msc.fema.gov/portal/advanceSearch
Apr. 10, 2026
080007
Adams
Unincorporated areas of Adams County (25-08-0358P)
The Honorable Lynn Baca, Chair, Adams County Board of Commissioners, 4430 South Adams County Parkway, Brighton, CO 80601
Adams County Community and Economic Development, 4430 South Adams County Parkway, 1st Floor, Suite W2000, Brighton, CO 80601
https://msc.fema.gov/portal/advanceSearch
Apr. 10, 2026
080001
Arapahoe
Unincorporated areas of Arapahoe County (25-08-0088P)
The Honorable Leslie Summey, Chair, Arapahoe County Board of Commissioners, 5334 South Prince Street, Littleton, CO 80120
Arapahoe County, Public Works and Development Department, 6924 South Lima Street, Centennial, CO 80112
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
080011
Boulder
Unincorporated areas of Boulder County, (25-08-0480P)
The Honorable Marta Loachamin, Chair, Boulder County Board of Commissioners, Post Office Box 471, Boulder, CO 80306
Boulder County Community, Planning and Permitting Building, 2045 13th Street, Boulder, CO 80302
https://msc.fema.gov/portal/advanceSearch
Apr. 13, 2026
080023
Denver
City and County of Denver, (25-08-0088P)
The Honorable Mike Johnston, Mayor, City and County of Denver, 1437 North Bannock Street, Room 350, Denver, CO 80202
City and County of Denver, Department of Public Works, 201 West Colfax Avenue, Denver, CO 80202
https://msc.fema.gov/portal/advanceSearch
Apr. 17, 2026
080046
Idaho:
Ada
City of Eagle (25-10-0597P)
The Honorable Brad Pike, Mayor, City of Eagle, 660 East Civic Lane, Eagle, ID 83616
City Hall, 660 East Civic Lane, Eagle, ID 83616
https://msc.fema.gov/portal/advanceSearch
Apr. 23, 2026
160003
Ada
City of Star (25-10-0597P)
The Honorable Trevor A. Chadwick, Mayor, City of Star, 10769 West State Street, Star, ID 83669
City Hall, 10769 West State Street, Star, ID 83669
https://msc.fema.gov/portal/advanceSearch
Apr. 23, 2026
160236
Ada
Unincorporated areas of Ada County (25-10-0597P)
The Honorable Rod Beck, Chair, Ada County Board of Commissioners, 200 West Front Street, Boise, ID 83702
Ada County Courthouse, 200 West Front Street, Boise, ID 83702
https://msc.fema.gov/portal/advanceSearch
Apr. 23, 2026
160001
Canyon
Unincorporated areas of Canyon County (24-10-0254P)
The Honorable Brad Holton, Chair, Canyon County Board of County Commissioners, 1115 Albany Street, Room 101, Caldwell, ID 83605
Canyon County Development Services Department, 111 North 11th Avenue, Room 310, Caldwell, ID 83605
https://msc.fema.gov/portal/advanceSearch
Apr. 20, 2026
160208
Nevada:
Clark
Unincorporated areas of Unincorporated Areas (25-09-0382P)
The Honorable Tick Segerblom, Chair, Clark County Board of Commissioners, 500 South Grand Central Parkway, Las Vegas, NV 89155
Clark County Clerk's Office, 500 South Grand Central Parkway, Las Vegas, NV 89155
https://msc.fema.gov/portal/advanceSearch
Apr. 14, 2026
320003
Lyon
City of Fernley (25-09-0167P)
The Honorable Neal E. McIntyre, Mayor, City of Fernley, 595 Silver Lace Boulevard, Fernley, NV 89408
Public Works Department, 595 Silver Lace Boulevard, Fernley, NV 89408
https://msc.fema.gov/portal/advanceSearch
Apr. 13, 2026
320038
Oregon:
Benton
Unincorporated areas of Benton County (25-10-0121P)
Rachel McEneny, Benton County Administrator, P.O. Box 3020, Corvallis, OR 97339
Benton County Community Development Department, 4500 Southwest Research Way, Corvallis, OR 97333
https://msc.fema.gov/portal/advanceSearch
Apr. 29, 2026
410008
Clackamas
City of Happy Valley (25-10-0093P)
Jason Tuck, ICMA-CM, City Manager, City of Happy Valley, 1600 Southeast Misty Drive, Happy Valley, OR 97086
City Hall, 1600 Southeast Misty Drive, Happy Valley, OR 97086
https://msc.fema.gov/portal/advanceSearch
Apr. 13, 2026
410026
Washington
City of Tualatin (25-10-0157P)
Sherilyn Lombos, City Manager, City of Tualatin, 18880 Southwest Martinazzi Avenue, Tualatin, OR 97062
City Offices, 18880 Southwest Martinazzi Avenue, Tualatin, OR 97062
https://msc.fema.gov/portal/advanceSearch
April 15, 2026
410277
North Dakota: Cass
City of Horace (25-08-0230P)
The Honorable Jeff Trudeau, Mayor, City of Horace, P.O. Box 99, Horace, ND 58047
City Hall, 215 Park Drive East, Horace, ND 58047
https://msc.fema.gov/portal/advanceSearch
Apr. 13, 2026
380022
South Dakota:
Lawrence
City of Spearfish (25-08-0037P)
The Honorable John Senden, Mayor, City of Spearfish, 625 North 5th Street, Spearfish, SD 57783
City Hall, 625 North 5th Street, Spearfish, SD 57783
https://msc.fema.gov/portal/advanceSearch
Apr. 30, 2026
460046
Meade
City of Sturgis (25-08-0221P)
The Honorable Kevin Forrester, Mayor, City of Sturgis, 1040 Harley-Davidson Way, Sturgis, SD 57785
Administrative Building, 1040 Harley-Davidson Way, Sturgis, SD 57785
https://msc.fema.gov/portal/advanceSearch
May 6, 2026
460055
Utah:
Davis
City of Layton (24-08-0321P)
The Honorable Joy Petro, Mayor, City of Layton, 437 North Wasatch Drive, Layton, UT 84041
Engineering Division, 437 North Wasatch Drive, Layton, UT 84041
https://msc.fema.gov/portal/advanceSearch
Apr. 14, 2026
490047
Weber.
City of Ogden (25-08-0165P)
The Honorable Benjamin K. Nadolski, Mayor, City of Ogden, 2549 Washington Boulevard, Ogden, UT 84401
City Hall, 2549 Washington Boulevard, Ogden, UT 84401
https://msc.fema.gov/portal/advanceSearch
Apr. 10, 2026
490189
Washington:
Clark
City of Washougal (24-10-0232P)
David Scott, City Manager, City of Washougal, 1701 C Street, Washougal, WA 98671
City Hall, 1701 C Street, Washougal, WA 98671
https://msc.fema.gov/portal/advanceSearch
Apr. 9, 2026
530028
Clark
Unincorporated areas of Clark County (24-10-0232P)
Kathleen Otto, County Manager, Clark County, P.O. Box 9810, Vancouver, WA 98666
Clark County Public Service Center, 1300 Franklin Street, Vancouver, WA 98666
https://msc.fema.gov/portal/advanceSearch
Apr. 9, 2026
530024
[FR Doc. 2026-09847 Filed 5-15-26; 8:45 am]
BILLING CODE 9110-12-P
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