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]

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