FLOOD06614

• County: Ouray
• Community: Ouray
• Stream Name: Uncompahgre River
• Basin: Gunnison
• Title: Debris and Flood Control Plan for Portland and Cascade Creeks
• Date: 10/25/1982
• Prepared For: Ouray County
• Prepared By: Simons Li & Associates Inc.
• Floodplain - Doc Type: Project

Figure 1.1

LIST OF FIGURES

Location map.. . . . .. .. .. .. . .. .. .

Figure 1,2a Looking downstream in Portland Creek flume

Figure 1.2b Looking downstream in Cascade Creek flume

\

Figure 3.1
Figure 3.2
Figure 3.3
Figure 3.4
Figure 3.5
Figure 3.6
Figure 3.7
Figure 3.8
Figure 4.1
Figure 4.2
Figure 4.3
Figure 5.1
Figure 5.2
Figure 5.3
Figure 5.4
Figure 5.5

Figure 5.6

Figure 5.7

Figure 5.8

Figure 5.9

paqe

1.2

1.3

1.3

Watershed and natural hazards map of Cascade and Portland
Creek watersheds.. . . . .. .. .. .. 3.2

Profiles of portland and Cascade Creeks 3.3

Typical flume cross sections, Portland Creek

Typical flume cross sections, Cascade Creek

Portland Creek flume profile

Cascade Creek flume profile

Photographs of portland and Cascade flumes

Area inundated by water and debris flooding, August 1982

Portland Creek flood frequency curves

Cascade Creek flood frequency curves .

Selected flume sizes for Portland and Cascade Creeks

Portland Creek illprovement plan

Cascade Creek improvement plan .

Conceptual Design of portland Improvement Phase IB.1
and Part of IA.1 . .. . .. . .. .. .. ..

Conceptual sketch of debris fence

Conceptual design of Cascade Phase IA.1, debris
catchment basin . . . ,

Conceptual design of Cascade Creek Improvement Phase IB.1
and IA.1 .. .. . .. .. .. .. . .. . .. .. ..

Conceptual Design of Cascade Improvement 3

Retaining wall around house along the Cascade flume

Figure 5.10 Conceptual design of depressed alternate debris flow path

Locations of existing debris walls . . .

v

3.13

3.14

3.15

3.16

3.19

3.22

4.3

4.4

4.12

5.9

5.10

5.12

5.13

. 5.20

5.21

5.22

5.29

5.30

5.34