FLOOD08247

• County: Archuleta
• Community: Pagosa Springs
• Basin: San Juan/Dolores
• Title: FIS - Pagosa Springs
• Date: 6/1/1978
• Prepared For: Archuleta County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

TABLE OF CONTENTS

Page

1. 0 ,INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . 1

1.1
1.2
1.3

Purpose of study...........................................
Coordination. . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . . . .
Authori ty and Acknowledgments................................

1
1
2

2.0 AREA STUDIED.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1
2.2
2.3
2.4

Scope of Study.............................................
Corrununity Description.........................................
Principal Flood Problems.....................................
Flood Protection Measures.................. ................

2
2
5
6

3.0 ENGINEERING METHODS.. . . . . . . . _ . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . 7

3.1 Hydrologic Analyses........................................ 7
3.2 Hydraulic Analyses......................................... 10

4.0 FLOOD PLAIN MANAGEMENT APPLICATIONS............. ................ 12

4.1
4.2

Flood Boundaries......... ...................... ...... .......
Floodways.................................................. .

12
13

5.0 INSURANCE APPLICATION.............................. . _ . . . . . . . . . . . 25

5.1
5.2
5.3
5.4

Reach Determinations............ ... .. . . . . ... ... ... ... ... ... .
Flood Hazard Factors........ ... .... .. . .. .... ...... . ... . . ... .
Flood Insurance Zones...........................................
Flood Insurance Rate Map Description.......................

25
25
26
26

6. 0 OTHER STUDIJ;:S.............. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . 28

7 _ 0 WCATION OF DATA............. _.. ... .. _ _ .. .. _ . . .... . . _ .. .. . ...... 28

8.0 BIBLIOGRAPHY AND REFERENCES...... _ . . . . . . _ . . . . . . . . . . . . . . . . . . . . . .. 28

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