Documents and Forms | Public Works

Requesting Floodplain Information

Document Name	Document Description/Explanation
Flood Info Request Form	Fill out form and fax to Navajo County (928) 524-4122

Regulatory Documents

These documents describe the delineation and regulation of flood hazard areas in the unincorporated areas of Navajo County.

Document Name	Document Description/Explanation
Floodplain Ordinance	Navajo County Flood Damage Prevention Ordinance.
Flood Study Part 1	Flood Insurance Study for Navajo County Arizona Unincorporated Areas, revised September 2008. Part 1 includes the text, tables and figures for this study.
Flood Study Part 2	Flood Insurance Study for Navajo County Arizona Unincorporated Areas, revised September 2008. Part 2 includes the floodway data for this study.
Flood Study Part 3	Flood Insurance Study for Navajo County Arizona Unincorporated Areas, revised September 2008. Part 3 includes the flood profiles for this study.

Technical Bulletins

These documents provide guidance for builders and design professionals on complying with the construction requirements of the National Flood Insurance Program Regulations.

Document Name	Document Description/Explanation
Bulletin 1-93	Openings in Foundation Walls for Buildings Located in Special Flood Hazard Areas in accordance with the National Flood Insurance Program.
Bulletin 2-93	Flood Resistant Materials Requirements for Buildings Located in Special Flood Hazard Areas in accordance with the National Flood Insurance Program.
Bulletin 3-93
Bulletin 7-93	Wet Floodproofing Requirements for Buildings Located in Special Flood Hazard Areas in accordance with the National Flood Insurance Program.

Engineering Guidance

These documents provide guidance to engineers, surveyors and other professionals involved in commercial or subdivision development in Navajo County.

Document Name	Document Description/Explanation
Subdivision & Commercial Guidelines	Drainage and Floodplain Requirements for Development in Navajo County. Guidance for developers and engineers on meeting the Navajo County drainage and floodplain requirements for subdivision and commercial development.
Erosion Hazard	Erosion Hazard Assessment. Guidance for engineers in identifying erosion hazards along streams and watercourses in Navajo County.
Vegetative Cover	Estimating Percent Vegetative Cover. Guidelines for engineers in estimating percent vegetative cover when using the ADOT Hydrology Manual HEC-1 methodology.
Impervious Cover	Estimating Percent Impervious Cover. Guidelines for engineers in estimating percent impervious cover when using the ADOT Hydrology Manual HEC-1 methodology.