FLOOD02396

• Designation Number: 180
• County: La Plata
• Community: Unincorporated La Plata County
• Basin: San Juan/Dolores
• Title: FIS - La Plata County, Unincorporated Areas
• Date: 6/1/1981
• Designation Date: 12/4/1981
• Floodplain - Doc Type: Floodplain Report/Masterplan

TABLE OF CO~~~~TE

Page

1.0 INTRODUCTION................................... .......,.......... 1

~

1,1 Purpose of Study...........................................
1.2 Coordination... . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . .
1.3 Authority and Acknowledgments.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

1
1
1

\

2 .0 l'R);:A S~UDIED..........................,......,.............. _ . . .

2

2.1 Scope of Study.,............................................ 2
2.2 Conununity Description. .................,..... .............. 2
2.3 Principal Flood Problems................................... 5
2.4 Flood Protection Measures.....,.,....,.,.,................. 7

3 . 0 lll'l(;~I~.EERING ME'['HeJDEl_. .. . . . . .. . . .. .. .. . .. . . , . . . . . . . . . . .. .. . . .. . . . . 7

3.1 Hydrologic Analyses................,....................... 8
3.2 Hydraulic Analyses.......................................... 9

4.0 FLOOD PLAIN MANAGEMENT APPLICATIONS....................".,..... 12
-.. ---

4.1 Flood Boundaries................................ _ . , . . . . . . . . 12
4.2 Floodways.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5. 0 INSURANCE AP":r,.J~A~!.Q!:,.......,..,....,........,..,.,,..,....,.... 2 8

5.1 . Reach Determinations.........................,......,.,.... 28
5.2 Flood Hazard Factors....................................... 28
5.3 Flood Insurance Zones.......................,..".......... 31
5.4 Flood Insurance Rate Map Description....................... 32

6.0 OTliEjL i3J:..u1:>IJ'ii2. . . . . . . . . . . .. . . .. . . . .. . . . . . . . .. . . . . . . . .. . . . . .. . . . . . 32

7.0 LOCATION OF DATA............................,... _ . . . . . . . . . . . . . . . 32

.

J

.

8.0 BIBLIOGRAPHY AND REFERENCES........,.....,..,................... 33

i