Westchester County Flood Maps (New York)

Assessors in Westchester County, New York are charged with determining the value of taxable property within a county or local area. These property value assessments are used to levy property taxes. In addition to tax assessment, assessors maintain detailed county and local maps that show parcel boundaries and buildings, including flood maps. These Westchester County flood maps show flood zones, flood damage, topography, and drainage patterns, which can impact property values. Westchester County Assessors may make flood maps available on their websites.

Bedford Assessor Bedford Hills NY 321 Bedford Road 10507 914-666-5149

Cortlandt Assessor Cortlandt NY 1 Heady Street 10567 914-734-1040

Harrison Town Assessor Harrison NY 1 Heineman Place 10528 914-670-3040

Lewisboro Town Assessors South Salem NY 79 Bouton Road 10590 914-763-3034

Mount Vernon Assessor Mount Vernon NY 1 Roosevelt Square North, Ste 1 10550 914-665-2325

North Salem Town Assessor North Salem NY 270 Titicus Road 10560 914-669-5214

Ossining Assessor Ossining NY 16 Croton Avenue 10562 914-762-8274

Peekskill Assessor Peekskill NY 840 Main Street 10566 914-734-4190


Building Departments in Westchester County, New York ensure the construction of safe buildings by creating and enforcing building codes. As part of this process, Westchester County Building Departments use flood maps to establish standards for building construction and resistance to natural disasters. Many maintain and evaluate flood maps, which include information on Westchester County flood zones, flood hazards, topography, soil composition, and flood drainage patterns. These maps may also include information on building codes and regulations related to flooding. These flood maps may be available online through the Building Department.

Ardsley Building Department Ardsley NY 507 Ashford Avenue 10502 914-693-6961

Armonk Building Department Armonk NY 17 Bedford Road 10504 914-273-8625

Bedford Planning Department Bedford Hills NY 425 Cherry Street 10507 914-666-4434

Bedford Zoning Bedford Hills NY 425 Cherry Street 10507 914-666-4585

Bronxville Building Department Bronxville NY 200 Pondfield Road 10708 914-337-7338

Croton On Hudson Permits Croton-on-Hudson NY 1 Van Wyck St 10520 914-271-4781

Eastchester Building Department Eastchester NY 40 Mill Road, Rm 206 10709 914-771-3317

Greenburgh Building Department White Plains NY 177 Hillside Avenue 10607 914-993-1575

Harrison Zoning Harrison NY 1 Heineman Place 10528 914-670-3075

Hastings-On-Hudson Village Zoning Hastings-on-Hudson NY 7 Maple Avenue 10706 914-478-3402

Lewisboro Building Department South Salem NY 79 Bouton Road 10590 914-763-3060

Lewisboro Planning Department South Salem NY 79 BoutonRoad 10590 914-763-5592

Lewisboro Town Zoning South Salem NY 79 Bouton Road 10590 914-763-3822

Mamaroneck Building Department Mamaroneck NY 169 Mount Pleasant Avenue 10543 914-777-7731

Mt Vernon Zoning Mount Vernon NY 1 Roosevelt Square North 10550 914-665-2393

New Rochelle City Permits New Rochelle NY 515 North Avenue 10801 914-654-2140

New Rochelle Zoning New Rochelle NY 515 North Avenue 10801 914-654-2033

North Castle Building Department Armonk NY 17 Bedford Road, Ste 1 10504 914-273-3714

North Salem Planning Department North Salem NY 270 Titicus Road 10560 914-669-5661

North Salem Zoning North Salem NY 270 Titicus Road 10560 914-669-5952

Ossining Planning Department Ossining NY 101 U.s. 9 10562 914-762-8675

Ossining Village Building Department Ossining NY 2 U.s. 9, # 2 10562 914-941-3199

Peekskill Building Department Peekskill NY 840 Main Street 10566 914-734-4140

Peekskill Planning Department Peekskill NY 840 Main St 10566 914-734-4210

Clerks in Westchester County, New York keep public records for a county or local government, including a number of different types of documents. As part of their duties, Clerks maintain detailed maps, including Westchester County flood maps. These maps contain flood zone information, flood hazards, topography, rivers, lakes, and other bodies of water, as well as other flood-related information. Clerks may also keep Westchester County historical flood maps. These flood maps may be available through the Clerk's website.

Bedford Town Clerk Bedford Hills NY 321 Bedford Road 10507 914-666-4534

Briarcliff Manor Village Clerk Briarcliff Manor NY 1111 Pleasantville Road 10510 914-941-4802

Cortland Town Clerk Cortlandt NY 1 Heady Street 10567 914-734-1020

Dobbs Ferry Village Clerk Dobbs Ferry NY 112 Main Street 10522 914-693-6161

Eastchester Town Clerk Eastchester NY 40 Mill Road, Rm 103 10709 914-771-3351

Greenburgh Town Clerk White Plains NY 320 Tarrytown Road 10607 914-993-1500

Harrison Clerk Harrison NY 1 Heineman Place 10528 914-670-3010

Hastings-On-Hudson Village Clerk Hastings-on-Hudson NY 7 Maple Avenue 10706 914-478-3400

Larchmont Village Clerk Larchmont NY 120 Larchmont Avenue, Ste 1 10538 914-834-6230

Lewisboro Town Clerk South Salem NY 11 Main St 10590 914-763-3511

Mt Pleasant Town Clerk Valhalla NY 1 Town Hall Plaza 10595 914-769-1766

Mt Vernon City Clerk Mount Vernon NY 1 Roosevelt Square North, Ste 1 10550 914-665-2348


Archives in Westchester County, New York collect and store documents and other records that have historic value. Most archives also contain local Westchester County maps, including flood maps. These flood maps include Westchester County flood zones, topography, and soil composition. They may also show drainage patterns and flood hazards. Archives may also have historical flood maps that show major floods from the past as well as Westchester County flood plan improvements. Many archives are housed within libraries, and archives may provide online access to their flood map collections.

Elmsford Inner City Records Archive Elmsford NY 50 Executive Boulevard 10523 914-592-1188

Harrison Police Records Archive Harrison NY 650 North Street 10528 914-967-5013


Emergency Services in Westchester County, New York manage emergency preparations, responses, and recovery at different levels of government. They may handle natural disasters, severe weather incidents, and a number of other emergency situations. As part of their responsibility for preparedness, Emergency Services departments often maintain Westchester County flood maps, including flood zones, flood insurance rates, FEMA flood information, and flood hazards. The maps also show water flow and drainage patterns, and may contain emergency flood response information. Westchester County flood maps may be available online through Emergency Services departments.

Empress Emergency Medical Services Yonkers NY 722 Nepperhan Avenue 10703 914-965-5040

Harrison Emergency Medical Services - Headquarters Harrison NY 2 Pleasant Ridge Road 10528 914-967-0100

Mamaroneck Emergency Medical Services Mamaroneck NY 220 North Barry Avenue Extension 10543 914-698-7315

Mamaroneck Village Emergency Services Mamaroneck NY 169 Mount Pleasant Avenue 10543 914-777-7710