FIS_Vol_2_of_2_-_53011CV002A.pdf

VOLUME 2 OF 2

CLARK COUNTY,

WASHINGTON

AND INCORPORATED AREAS

COMMUNITY NAME COMMUNITY NUMBER

BATTLE GROUND, CITY OF 530025

CAMAS, CITY OF 530026

CLARK COUNTY

(UNINCORPORATED AREAS) 530024

LA CENTER, CITY OF 530248

RIDGEFIELD, CITY OF 530298

VANCOUVER, CITY OF 530027

WASHOUGAL, CITY OF 530028

YACOLT, TOWN OF 530269

FLOOD INSURANCE STUDY NUMBER

53011CV002A

CLARK COUNTY

EFFECTIVE DATE: SEPTEMBER 5, 2012

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NOTICE TO

FLOOD INSURANCE STUDY USERS

Communities participating in the National Flood Insurance Program have established repositories of flood hazard data for floodplain management and flood insurance purposes. This Flood

Insurance Study (FIS) report may not contain all data available within the Community Map

Repository. Please contact the Community Map Repository for any additional data.

Selected Flood Insurance Rate Map (FIRM) panels for this community contain information that was previously shown separately on the corresponding Flood Boundary and Floodway Map

(FBFM) panels (e.g., floodways, cross sections). In addition, former flood hazard zone designations have been changed as follows:

Old Zone(s) New Zone

Al through A30 AE

Vl through V30 VE

B X

C X

Part or all of this Flood Insurance Study may be revised and republished at any time. In addition, part of this Flood Insurance Study may be revised by the Letter of Map Revision process, which does not involve republication or redistribution of the Flood Insurance Study. It is, therefore, the responsibility of the user to consult with community officials and to check the community repository to obtain the most current Flood Insurance Study components.

FIS Effective Date: September 5, 2012 i

TABLE OF CONTENTS

1.0 INTRODUCTION

1.1 Purpose of Study

1.2 Authority and Acknowledgments

1.3 Coordination

2.0 AREA STUDIED

2.1 Scope of Study

2.2 Community Description

2.3 Principal Flood Problems

2.4 Flood Protection Measures

3.0 ENGINEERING METHODS

3.1 Hydrologic Analyses

3.2 Hydraulic Analyses

3.3 Vertical Datum

4.0 FLOODPLAIN MANAGEMENT APPLICATIONS

4.1 Floodplain Boundaries

4.2 Floodways

5.0 INSURANCE APPLICATIONS

6.0 FLOOD INSURANCE RATE MAP

7.0 OTHER STUDIES

8.0 LOCATION OF DATA

9.0 BIBLIOGRAPHY AND REFERENCES

ii

TABLE OF CONTENTS

FIGURES

Figure 1 – Floodway Schematic

TABLES

Table 1 – Initial and Final CCO Meeting Dates Table 2 – Letters of Map Change (LOMCs) Table 3 – Comparison of Major Columbia River Floods Table 4 – Summary of Discharges Table 5 – Manning’s “n” Values Table 6 – Floodway Data Table 7 – Community Map History

Exhibit 1 - Flood Profiles

EXHIBITS

Burnt Bridge Creek Panels 01P-12P China Ditch Panels 13P-15P Columbia River Panels 16P-24P Curtin Creek Panels 25P-28P East Fork Lewis River Panels 29P-40P

VOLUME 2

EXHIBITS

East Fork Lewis River Lower Split Panels 41P East Fork Lewis River Path 2 Panels 42P East Fork Lewis River Path 3 Panels 43P Fifth Plain Creek Panels 44P-47P Gee Creek Panels 48P-55P Lacamas Creek Panels 56P-65P Lewis River Panels 66P-80P Mill Creek Panels 81P-86P Packard Creek Panels 87P-92P Padden Creek Panel 93P Salmon Creek Panels 94P-111P Spring Branch Creek Panel 112P Unnamed Tributary to Gee Creek Panel 113P Washougal River Panels 114P-118P Weaver Creek Panels 119P-123P Whipple Creek Panels 124P-130P ii

PUBLISHED SEPARATELY:

Exhibit 2 - Flood Insurance Rate Map Index Flood Insurance Rate Map

EXHIBITS