PROJ00273

• Contract/PO #: C153368
• Contractor Name: Cache LaPoudre Water Development Study
• Water District: 0
• County: Larimer
• Bill Number: SB 81-439
• Loan Projects - Doc Type: Feasibility Study

CERl'IFICA'l'B OF ENGIHBBR
EXECUTIVE SUMMARY S-l
Table of Contents
List of Tables
List of Figures
Acknowledgements

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CACIIB LA POODRB PROJEC'r 5'rllDY
RBCCliNAISSANCE RBPORl'
TABLE OF COl'rEllTS

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CliAPTBR I IHTlI)J){JCTICIt.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 1-1
A. AUTHORITY.. .. .... .. .. .. .... .. .. .. .... .. .. .. .. .. .. .. .. .. .... .. .. .. .. .... .. .. .... .... .. .... .. .. .. .. .... .. .. .. .. .. .. 1-1
B.. STUDY OBJ'ECTlVE............................................................................................. 1-1
C.. STUDY AREA..................................................................................................... .1-1
D.. STUDY MANAGEMENT............................................................................................ 1-2

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CHAPTER II

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CHAPTER III
A.
B.

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E.
F.

CONDUCT OF THE STUDy................................................... ...1-2

PUBLIC INVOLVEMENT....................................................... .1-3

BAScIN DESCRIP'1'I~.......................................................... I 1- 1

A. INTRODUCTION.......................................... ............................... .11-1
B. LOCATION AND PHySIOGRAPHy................................................. .11-1

C.

THE RIVER CORRIDOR................................................................................... .11-2
CLIMATE .................................................................................................... .11-7
FISH AND WILDLIFE RESOURCES................................. .11-7
GEOLOGICAL AND GEOTECHNICAL CONSIDERATIONS...................II-9

1. Geological Setting............................................................. .11-9
2. Seismicity....................... 10.................... If.......................................... .11-9
WATER SU~PLY.. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9
PRESENT WATER USE.....................,.................... .11-10
WATER USE ENTITIES AND EXISTING FACILITIES..................lI-10
1. Inventory of Entities and Existing Facilities..........lI-10
2. Operation of the Existing System.......................II-12
EXISTING POWER SYSTE~1 SETTING...............................II-13

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HYDROLOGY AND WATER RIGHTS.............................llI-1

INTRODUCTION............................................... .111-1

WATER SUPPLY HyDROLOGy...................................... I 11- 1
1. General............................................... .111-1

2.

Recorded Annual Flows..................................lII-l
a. Mouth of the Canyon...............................1Il-1
b. Transbasin Imports................................III-2
c. Major Upstream Diversions.........................III-2
d. Consumptive Uses................................. .111-2
e. Effects of Regulation.............................III-2
Derivation of Annual Native Flows......................III-2
Selection of the Hydrologic Study Period...............III-3
Derivation of Monthly Native Flows.....................III-3

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