FLOOD00961

• County: Larimer
• Community: Fort Collins
• Stream Name: Spring Creek
• Title: Hydraulic Evaluation of the Centre Avenue Bridge at Spring Creek
• Date: 11/22/2000
• Prepared For: Fort Collins
• Prepared By: Anderson Consulting Engineers, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table 3,1

Table 3,2
Table 3,3
Table 4,1

Table 4,2

Table 4,3

Table 4.4

Table 4,5
Table 4,6

Sheet 1:

Sheet 2:

Sheet 6:
Sheet 7:

TABLE OF CONTENTS (Continued)

TABLES

Comparison of 100- Year Water Surface Profiles for
Duplicate and Corrected Effective Analyses, "",","""""'" 10
Summary of Duplicate Effective Floodway Results, ,,""""""" II
Summary of Corrected Effective Floodway Results, """""""" 13
Comparison of Calibrated EXTRAN Modeling Results
to the Effective SWMM Model. ,,"""""',""""""'" 16
Summary of Pre- and Post-Project Condition Maximum Ponded
Water Surface Elevations. as Computed by EXTRAN, ",.",.,.,." 19
Summary of Pre- and Post-Project Condition
Peak Release Rates, as Computed by EXTRAN, , , , . , , , , , , , , , , , , , , , 19
Comparison of 100- Year Water Surface Profiles for
Corrected Effective and Post-Project Condition Analyses, """""" 21
Summary of Post-Project Condition Floodway Results, """"""" 22
Comparison of Corrected Effective and Post-Project
Condition 100-Year Channel Velocities, , , , , , , , , , , , , , , , , , , , , , , , , 23

SHEETS

Post-Project Condition Floodplain and Floodway Map
(Corresponds to 1993 Work Map Sheet 6)
Post-Project Condition Floodplain and Floodway Map
(Corresponds to 1993 Work Map Sheet 7)
Floodplain Delineation Sta, 156+70 to Sta, 184+70, 1993 Work Map,
Floodplain Delineation Sta, 184+70 to Sta, 204+80, 1993 Work Map,

APPENDICES

Appendix A: As-Built Drawings for Centre Avenue and the Spring Creek Bridge
Appendix B: Plotted Water Surface Profiles

Appendix B,l:
Appendix B,2:
Appendix B,3:

Effective (Published) Water Surface Profiles
Corrected Effective Water Surface Profiles
Post-Project Condition Water Surface Profiles

Appendix C: Plotted HEC-2 Cross Sections

Appendix C,1:
Appendix C.2:
Appendix C.3:

Duplicate Effective HEC-2 Cross Sections
Corrected Effective HEC-2 Cross Sections
Post-Project Condition HEC-2 Cross Sections

Appendix D: Riprap Sizing Information

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ANdERSON CONSulTiNG ENGiNEERS, INC,

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