FLOOD01888

• County: Statewide
• Title: River Hydraulics
• Date: 10/15/1993
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Appendix C
Study Planning and ReponIng
Development of the Hydraulic Study

Work Plan ................... C,l
Reporting Requirements ........... C-2
Hydrologic Engineering Study
Checklist .................... C-3
Documentation Checklist .......... C-4
Example Detailed Hydrologic Engineering
Management Plan for a Feasibility
Study (Flood Damage Reduction
using HEC-1 and -2) ............ C-5
Generic Hydraulic Study Work Plan for
Unsteady, Gradually-Varied How
Analysis (TABS-2) ............. C-6

Appendix 0
River Modeling - Lessons Learned

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C-1
C-2

C-4
C-4

C-4

C-9

Section 1
Defining River Geometry
Introduction ................... 0-1 0-1
Geometric Data. . . . . . . . . . . . . . . .. 0-2 0-1

EM 1110-2-1416
15 OCt 93

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Par8g,oph

Developing Cross-Sectional Data
to Define How Geometry . . . . . . . . 0-3
Developing Cross-Sectional Data
to Satisfy Requirements of the
Analytical Method . .. .. .. .. . .. . 0-4
Reviewing Computed Results to Determine
Adequacy of Cross-Sectional Data . . 0-5
Other Considerations in Developing
Cross-Sectional Data ........... 0-6
Modeling How Geometry at Structures 0-7
Developing Reach Length Data . . . . . 0-8
Survey Methods for Obtaining Cross
Sections and Reach Lengths ...... 0-9

Section II
Energy Loss Coefficients
Variation of Manning's n with
River Conditions. . . . . . . . . . . . . . 0-10
Estimation of n Values. . . . . . . . . . . 0-11
Contraction and Expansion Losses . . . 0-12

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0-3

0-6

0,7

0-7
0-7
0-12

0-14

0-15
0-17
0,22

III