FLOOD10397

• County: Statewide
• Basin: Statewide
• Title: Colorado Flood Proofing Manual
• Date: 10/1/1986
• Prepared By: CWCB
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Figure 1,1.
Figure 1.2
Figure 1,3,
Figure 3.1,
Figure 3,2.
Figure 4.1.
Figure 4.2.
Figure 4.3,
Figure 4.4.
Figure 4.5.
Figure 4.6.
Figure 4.7.
Figure 4.8,
Figure 4.9.
Figure 4.10.
Figure 4.11.
Figure 4.12
Figure 4,13.
Figure 4.14.
Figure 4.15.
Figure 4,16,
Figure 4.17.
Figure 4.18.
Figure 4.19.
Figure 4.20.
Figure 4.21.
Figure 4.22.
Figure 4,23.
Figure 4,24.
Figure 4.25.
Figure 4,26.
Figure 4.27,
Figure 4.28.
Figure 4.29.
Figure 4.30.
Figure 5.l.
. Figure 5,2.
Figure 5,3.
Figure 5.4.
Figure 5,5.
Figure 6.1.
Figure 6.2.
Figure 6.3.
Figure 6.4,
Figure 6.5.
Figure 6.6,
Figure 6.7.
Figure 6,8,
Figure 6.9.
Figure 6.10,
Figure 6.11.
Figure 7,1.
Figure 7.2.
Figure 7,3.
Figure 7.4,
Figure 7.5.
Figure 7,6.

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LIST OF FIGURES

Examples of Residential structures, . , . . , , . .. " . .. . . . . ,. . . . . .. . . , ., . . .. .., . 4
Examples of Mobile Home structures. . . . . . . , . . . . . , . . . . . . . . . . . . . . . . . . . . , . . 6
Examples of Commercial and Industrial structures.. . . . . , . . . , . . . . . . , . . . , . . . 7
Bank erosion sequence.. . . . . , , . . . . . . . . . . . . , , . . . . . . , . . . . . , . . . . . . . , . . . . . .. 16
Bank erosion sequence. . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17
Flood damaged structure in Big Thompson Canyon. . . , . . . . . . . . . . . . . . . . , .. 19
Flood damaged structure in Big Thompson Canyon . . . . , . . . . . . . . . . . . . . . . .. 10
Flood damaged structure in Big Thompson Canyon............... ........ 20
Floodproofing of commercial structures by fill elevation................... 21
Floodproofing of commercial structures by fill elevation. .. .. . . .. . . .. .. . ... 21
Floodproofing of commercial structures by fill elevation. .. .. . ... . ..... . ... 22
Floodproofing of commercial structures by fill elevation. ..... .. ... .. .. . . .. 22
Floodproofing of commercial structures by fill elevation. . .... .. ... . .. . .... 23
Floodproofing of commercial structures by fill elevation, . . . . . . . . . . . . . . , . .. 24
Floodproofing of small business structures. .... ..... . . . . . .. . . .. .. . ... ... .. 25
Floodproofing of small business structures.. .. . .. . .. . . , . . . ... ..... ..... . .. 25
Floodproofing of small business structures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28
Floodproofing of residential structures......,.........,................... 27
Floodproofing of residential structures.. . . . . , . . ..... . . . . .. ... . .... .. .. . . .. 27
Floodproofing of residential structures, . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 28
F1oodproofing of residential structures. . . . . . . . . , . . . . . . . . . . . , . . . . . , . . . . . . .. 28
Floodproofing of residential structures. . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 29
Mobile home flood proofing protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 30
Mobile home flood proofing protection. , . . , . . . . . . . . , . . . . . . . . . . . . . . . . . . . .. 30
Mobile home flood proofing protection. . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . , . .. 31
Mobile home floodproofing protection. . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 31
Residential floodwalls, . . . . , . . , , , , . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 32
Residential floodwalls. . . . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 32
Floodwalls combined with streambed stabilization. . . . . . . . . . . . . . . . . . . . . . .. 33
Floodwalls combined with streambed stabilization.. . . . . .. . . . '" ... . . . . '" 33
Flood control by dikes and levees.. . . . . .. .. .. ...... . , , . .. . . . . .. . .... . . ... 34
Flood control by dikes and levees.. .. .. .. ....... ... .. . .. .... ...... ....... 43

Erosion control, , . . . . . , . .. . . , . , , . .. . . . . .. . , . . . . . .. . .. . " .... ...,. . .. ..... 35

Erosion control, , , . . . . . . . . , . . . . . . . , , , . . . . . , . . . . . . . . . . , . . . . . . . . . . . . . . . . . .. 36

Erosion control, , , . , . . . . . . . , . . . . . . . . . . . , , . . . . , , . , . . , , , . . . . . . . . . , . . . . . . . .. 36
The floodway and flood fringe.. , . . . . . . . . . , . . . , . . , . . . . . . . . . . . . . , . . . . . . , .. 37
Aerial photo of island development in Gunnison. , . . . . . . . . . . . . . . . . . . . . . . .. 38
Island development in Frisco....""........,................,........... 38
Flood protection by natural building materials. . , . . . . . . . . . . . . . . . . . . . . . . . .. 39
Development of embankment for flood protection.. .,.......... .. ........ 40
Hydraulic forces due to water loading.. , . . . " . . . . . . . , , . .. . .. . .. . ... . . .... 42
Buoyancy forces acting on basement, . . . . . . , . . . . . , . . , . . . . . . . . . . . . . . . . . . .. 43
Basement wall loading conditions. . . . . . . . . . . . , , . . . . . . . , , . . . . . . . . . . . . . . , .. 44
loading condition for water surface equal to ground elevation.. . . . . . . . . . .. 44
Scour on ground level structures. . . . . . . , . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . , " 51
local scour on piles, piers or walls. . , . . . . . . . . . , . . . . . . . . . . . . . . . . . . , . . . . . '. 51
Scour conditions on compacted fill embankment.. . , . . . . . . . . . . . , . . . . . . . ., 52
Typical shapes of piers. . . , . . . . , . , . . . , . . . . . . . . . . . . . . . . , . . , . . . . . . . . . . . . . . .. 52

Angle of skew, , . . . . , , , , . . , , . . , , . . , , . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . .. 52
Rotational sheer failure. ,.. . . . , . . . . . , . .. . , . . . . . .. .. . . " '" ... ... . ... . .. .. 55
Translatory slide failure..... . ,., ..... '" .,......... .... .......... ..... .,. 55

Elevation on fill. . . . . . . . . . . . . . . . . . . , . . . . . . , . . . . . . . . . . . . . . . . . . . , . . . . . . . . . .. 59
Post on concrete bearing pad. . . , . . . . . . . . . . . , , . . . . . , . . . . . . . . . . . . . . . , . . . .. 58
Pile/post foundation. . . . . . . . . . . , . . . . . . . . . . . . . , . , . . . . . . . . . . . . . . . , . . . . . . . .. 58

Anchoring posts. . . , . , . . . , . , . , , . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . .. 60

Knee brace. .. . , . , . . .. . , , . .. . , . . , . . , . . . .. .. ... '" .. . . " .. . .. ............. 61

Rod bracing.. , . . . . .. , ,..... , . . ... , . . '. . . . .. .. .. .. . . ........ . .... .. . . .... 61