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<br />Flood Hazard Area Delineation
<br />Upper Box Elder Creek
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<br />Section
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<br />Page
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<br />3,7 UDSWM2 Modeling """.,..,...,.,...",..".'.'.... 3-4
<br />3.7.1 Conveyance Element Identification Number, , , , , , . . . . , , " 3-4
<br />3,7.2 Stream Geometry , . , , , , , . . , , , . . , , . . , . , , , , , . , ., 3-4
<br />3,7.3 Roughness ..".""",.,..."""'.".',,,'.,.. 3-4
<br />3,7.4 Routing Connectivity. . . . , , , , , , . , . , , . , , . , , , , . . . , , " 3-4
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<br />3,8 Results , , . , , , , , , , , . . . , . . . . , , , , . , . . . . , . , , , , , . , , . , , , " 3-4
<br />3,8,1 Baseline Peak Flows, Hydrographs, and Runoff Volumes ..'. 3-4
<br />3.8,2 Comparison to Previous Studies ,."""'...",.",,,. 3-5
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<br />Contents
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<br />1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1...1
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<br />1.1 Authorization, , . , , , , , , . , , , . , , , , , . , , , , . , , , , . , , , , , , , , " 1-1
<br />1.2 Purpose, , , , , , , , , , , , , , , , . , , . , , , , , . , , , , , , , . , , , , , . . , " 1-1
<br />1.3 Scope of Work .. . . . , , , , , , . . , . . . , . , , , , . , , , . , , . , , , , . , .' 1-1
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<br />1.4 Mapping, , , , , . . . . , . . , , . , , , , , . , . . , , , , , , , , , . , . , , . . . ,. 1-1
<br />1.5 Background Information , . . , , , , . , , . , . . , . . , , , , , , , . , , , , , , " 1-1
<br />1.6 Project Advisory Committee. , , . , , , , , , . , , , , , , , , , , , , , . , , , .. 1-1
<br />1.7 Acknowledgements, , , , , , , , , , , , . , , , , , , , , , . , , , , , , . , , , . " 1-3
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<br />4.0 Hydraulic Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-1
<br />4,1 Methodology, , , , , , , , . , . , , . , , , , , . . , , , , , . . . . , , , , , , , . " 4-1
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<br />4,2 Results, , . , , , , , , , , , . . , , . , , , . , . , . . , , , , , , . , , . , , , , , , . ,. 4-1
<br />4.3 General Overview of Flood Impacts ,'.'"""".""""", 4-1
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<br />5.0 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-1
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<br />2.0 Study Area Description ..................................... 2-1
<br />2.1 Topography and Physiography "."".",."",..'"""" 2-1
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<br />2.2 Soils, . , , , , , , , , , , , , , , , , , , . , . , . . , , , . . . , . , , . . . , , , . . " 2-1
<br />2.3 Surface Water Resources .",'."",."""""""",." 2-1
<br />2.3,1 Stream Characteristics ."". , , , , , , , , , , . , , , . , . , , , , " 2-1
<br />2.3,2 Reservoirs '.'."..""""...."""",.,.",., 2-1
<br />2.3.3 Diversions '.'",.".""",.,.",.""".."". 2-3
<br />2.3.4 Flood History " . , . . , , . , , , , , . , , , , , , . , , . , , , . , , . . " 2-3
<br />2.4 Vegetation. . , , , , , , , , , , , . , . , , , , , , , , . . . . , . , , , , , , , , , , " 2-3
<br />2.5 Watershed Imperviousness ""..,.',.",."".""""", 2-3
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<br />3.0 Baseline Hydrology Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-1
<br />3,1 Major Watersheds ",'.,..,..,.".".",'..,.""",.., 3-1
<br />3.2 Subwatersheds, , , , , . , . , , , , , , , . , , , , . , , , . , . , , . . . , , , , , " 3-1
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<br />3.3 Streams, , , , , , , , , , , , , , . , , , , , , , . . , , , , , , , , , , , . . , . , , , " 3-1
<br />3.4 Hydrologic Models ",.,."""""",.,...,.,.'.'"", 3-1
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<br />3,5 Rainfall, , , . . . , . . . , . , , . , , . . . . , , . , , , . , , , , , . . , . . . , , , " 3-2
<br />3.5,1 Criteria .".".,.".",.,'.""""..""""" 3-2
<br />3,5,2 Rainfall Depths , . , , . , , , , . . , , . , , , , , , , , , , , . , , . , , . " 3-2
<br />3,5.3 Hyetographs..,.,,".".".".""".,."""'., 3-2
<br />3,6 CUHP Modeling , , . . , . , . , , , , . , , , , , . , , , , , , , , , , , , , , , , , ., 3-3
<br />3,6,1 Delineation of Subwatersheds , , , , , . , , , , , , , . , . , , . . , , " 3-3
<br />3.6.2 Imperviousness,."",."",.",."",."..""" 3-3
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<br />3.6.3 Slope.,..,.".,..,.""..."",.."""",.,., 3-3
<br />3,6.4 Time of Concentration , , , . , , . , . , . , . , , , , , , , , , . . , . , " 3-3
<br />3,6.5 Retention Storage Losses , , , , , . , . , . , , , , . , , , , . . , . , , ., 3-3
<br />3,6.6 Infiltration Losses """"'..",.",.""""",,, 3-3
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