FLOOD10474

• Designation Number: 594
• County: Jefferson
• Community: Jefferson County and Incorporated Areas
• Title: FIS - Jefferson County and Incorporated Areas - Vol 1
• Date: 6/17/2003
• Prepared For: Jefferson County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

FLOOD INSURANCE STUDY
JEFFERSON COUNTY, COLORADO AND INCORPORATED AREAS

1.0 INTRODUCTION

1.1 Purpose of Study

This Flood Insurance Study (PIS) revises and updates information on the existence and
severity of flood hazards in the geographic area of Jefferson County, including the Cities of
Arvada, Edgewater, Golden, Lakewood, Westminster, and Wheat Ridge; the Towns of Bow
Mar, Lakeside, Morrison, and Mountain View; and the unincorporated areas of Jefferson
County (referred to collectively herein as Jefferson County), and aids in the administration of
the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This
study has developed flood risk data for various areas of the community that will be used to
establish actuarial flood insurance rates and to assist the community in its efforts to promote
sound floodplain management. Minimum floodplain management requirements for
participation in the National Flood Insurance Program (NFIP) are set forth in the Code of
Federal Regulations at 44 CFR, 60.3.

Please note that the Cities of Arvada and Westminster are geographically located in Adams
and Jefferson Counties. The Town of Bow Mar is geographically located in Arapahoe and
Jefferson Counties. The City of Broomfield is geographically located in Adams, Boulder,
Jefferson, and Weld Counties4 The Cites of Arvada and Westminster and the Town of Bow
Mar are included in their entirety in this FIS report. The flood hazard information for the City
of Broomfield is for information purposes only. See separately published FIS report and
Flood Insurance Rate Map (FIRM).

Please note that the Towns of Bow Mar, Lakeside, and Mountain View are non-floodprone.

In some States or communities, floodplain management criteria or regulations may exist that
are more restrictive or comprehensive than the minimum Federal requirements. In such cases,
the more restrictive criteria take precedence and the State (or other jurisdictional agency) will
be able to explain them.

1.2 Authority and Acknowledgments

The sources of authority for this FIS are the National Flood Insurance Act of 1968 and the
Flood Disaster Protection Act of 1973.

The hydrologic and hydraulic analyses for the original study for the City of Arvada
(Reference 1) were performed by Greiner Engineering Sciences, Inc., for the Federal
Emergency Management Agency (FEMA) under Contract No. EJ.AW-83-C-1173. This work
was completed in July 1989.

The hydrologic and hydraulic analyses for the original study for the City of Edgewater
(Reference 2) were performed by the URS Corporation and completed in December 1986 and
1977 (References 3 and 4).