FLOOD10516 ‎(2)‎

• County: Weld
• Community: Fort Collins
• Stream Name: Cache La Poudre River
• Basin: South Platte
• Title: Volume I - Hydraulic Analysis for the Cache La Poudre River between Timnath Diversion Dam and College Ave.
• Date: 4/11/2006
• Prepared For: Fort Collins
• Prepared By: Anderson Consulting Engineers, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

.

.

.

VI.

VOLUME I - TABLE OF CONTENTS (Continued)

EXISTING CONDITION HYDRAULIC ANALYSES ..................................................6.1

6.1 FEMA Analyses......... ........... ....... ............... ..................... ........... ...... ................... .6.1

6.1.1 Floodplain Analyses and Results ..............................................................6.2
6.1.2 One-Foot Floodway Analysis and Results................................................ 6.2

6.3 COFC Analyses - Tenth-Foot Floodway Analysis and Results............................6.6

VII. REVISED CONDITION HYDRAULIC ANALYSES ....................................................7.1

7.1 Project Overview and Description ofImprovements............................................ 7.1

7.2 FEMA Analyses.................................................................................................... 7.3

7.2.1 Floodplain Analyses and Results.............................................................. 7.3
7.2.2 One-Foot Floodway Analysis and Results ................................................ 7. 7

7.3 COFC Analyses.................................................................................................... 7.9

7.3.1 Tenth-Foot Floodway Analysis and Results ............................................. 7.9
7.3.2 Product 6 Corridor Analysis and Results ................................................. 7.9

VIII. REFERENCES ..... ..... .... ..... .... ......... ..... ............ ................. ........... ..... ...... ......... ..... .......... .8.1

Figure 1.1
Figure 1.2

Table 2.1
Table 2.2
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 5.1
Table 5.2

LIST OF FIGURES

Vicinity Map. ....................................................................................................... .1.2

Site Map............................................................................................................... .1.3

LIST OF TABLES

Cache la Poudre River PIS Hydrology (USACE 1988, FEMA 1996) .................2.1
Cache la Poudre River Detailed Discharge Profiles .............................................2.2
Summary of Effective and Duplicate FEMA Models for Current Study .............3.2
Effective FEMA Water Surface Profiles ....... ................. ....... ............... ................3.4
Summary of Effective COFC Models for Current Study .....................................3.8
Effective and Duplicate FEMA Model Names.....................................................4.1
Effective and Duplicate FEMA Water Surface Profiles .......................................4.3
Effective and Duplicate One-Foot Rise Floodway Results ..................................4.6
Effective and Duplicate COFC Model Names......................................................4.8
Effective and Duplicate Tenth-Foot Floodway Results........................................4.9
Duplicate and Corrected FEMA Model Names ....................................................5.1
Duplicate and Corrected FEMA Water Surface Profiles......................................5.4

11

ANdERSON CONsulTiNG ENGiNEERS, INC.

COFC2003.10 FINAL LOMR TOC.doc