FLOOD10404

• Designation Number: 128
• County: Larimer
• Community: Larimer County and Unincorporated Areas
• Basin: South Platte
• Title: FIS - Larimer County and Unincorporated Areas
• Date: 9/1/1978
• Designation Date: 1/31/1979
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

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TABLE OF CONTENTS

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Page

1. 0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Purpose of Study...........................................

1. 2 Coordination........... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. 3 Authority and Acknowledgments..............................

1
1
1

2. 0 AREA STUDIED.................................................... 2

2.1 Scope of Study.............................................

2.2 Corrununity Description......................................

2.3 Principal Flood Problems...................................

2.4 Flood Protection Measures..................................

2
2
5
6

3.0 ENGINEERING METHODS... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 Hydrologic Analyses........................................ 10

3. 2 Hydraulic Analyses......................................... 12

4.0 FLOOD PLAIN MANAGEMENT APPLICATIONS............................. 17

4.1 Flood Boundaries........... ........... ..................... 17

4.2 Floodways...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.0 INSURANCE APPLICATION......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5.1 Reach Determinations........................,.............. 55

5.2 Flood Hazard Factors....................................... 55

5.3 Flood Insurance Zones...................................... 56

5.4 Flood Insurance Rate Map Description....................... 56

6.0 OTHER STUDIES... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

7.0 LOCATION OF DATA................................................ 62

8.0 BIBLIOGRAPHY AND REFERENCES..................................... 63

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