WSP07943

• File Number: 5700
• Description: Flood Protection Section - Flood Control Projects
• State: CO
• Basin: Statewide
• Date: 10/25/1982
• Author: CWCB
• Title: Debris and Flood Control Plan for Portland and Cascade Creeks at Ouray - Colorado - Final Report
• Water Supply Pro - Doc Type: Report/Study

000890

.

LIST OF FIGURES

Figure 1.1 Location map. . . . . . . . . . . . . . .

Figure 1.2a Looking downstream in Portland Creek flume

Figure 1.2b Looking downstream in Cascade Creek flume

Figure 3.1 Watershed and natural hazards map of Cascade and Portland
Creek watersheds . . . . . . .. . .

Figure 3.2 Profiles of Portland and Cascade C!-"eeks

FigJre 3.3 Typical flume cross sections, Portland Creek

Figure 3.4 Typical flume croSS sections, Cascade Creek

Figure 3.5 Portland Creek flume profile

Figure 3.6 Cascade Creek flume profile

Figure 3.7 Photographs of portland and Cascade flumes

Figure 3.8 Area inundated by water and debris flooding, August 1982

Figure 4.1 Portland Creek flood frequency curves

Figure 4.2 Cascade Creek flood frequency curves.

Figure 4.3 Selected flume sizes for Portland and Cascade Creeks

Figure 5..J Portland Creek inprovement plan

Figure 5.2 Cascade Creek improvement plan .

Figure 5.3 Conceptual Design of Portland Improvement Phase IB.1
and Part of IA.1 . . . . . . . . .

Figure 5.4 Conceptual sketch of debris fence

Figure 5.5

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

. . .

Figure 5.6

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

Figure 5.7

Conceptual Design of Cascade Improvement 3

Figure 5.8

Retaining wall around house along the Cascade flume

t,

Locations of existing debris walls. . .

Figure 5.9

Figure 5.10 Conceptual design of depressed alternate debris flow path

v

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