WSP07965

• File Number: 8446
• Description: Cache La Poudre Project
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 7/1/1983
• Title: Cache La Poudre Project Study and Related Correspondence
• Water Supply Pro - Doc Type: Report/Study

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CACBB LA POUDRB PROJEC'l' STUDY
RECONNAISSANCE REPORT
TABLE OF cONTBIlTS

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CERTIFICATE OF ENGINEER
EXECUTIVE SUMMl\RY 5-1

Table of Contents .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. i
List of Tables .... .. .. .. .. .. .. .. .. .. .... .. .. .. .... .. .. .... .. .. .. .. .. .... .. .. .. .... .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .V 1.
List of Figures ...................................................Vll1
Acknowledgements .. .. .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... .. .. .. .. .. .. .... .. .. .. .. .. .. .. .... .. .. .... .... .... .l.X

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CHAPTER I INTI{()DtJCTICIiI. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. -. .. .. .. .. .. .. .. .. .. .. 1-1
A. AUTHORITy...................................................................................................... .1-1
B. STUDY OBJECTIVE............................................................................. .1-1
C. STUDY AREA.................................................................................................... .1-1
D.. STUDY MANAGEMENT...................................................................... 1-2
E. CONDUCT OF THE STUDy.......................................... 1-2
F. PUBLIC INVOLVEMENT............................................ 1- 3

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CHAPTER II

BA.SIN DBSCRIPTlOO...................................... .11-1

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A. INTRODUCTION................................................ .11-1
B. LOCATION AND PHySIOGRAPHy.......................... ......... .11-1
C. THE RIVER CORRIDOR.......................................... .11-2
D. CLIMATE ............................ ~..................... .11-7
E. FISH AND WILDLIFE RESQURCES..................................II-7
F. GEOLOGICAL AND GEOTECHNICAL CONSIDERAT}ONS...................II-9
1. Geological Setting..............."..................... .11-9
2. Seismicity....................... '!..................... .11-9
G. WATER SUPPLY. ........................."..................... .11-9
H. PRESENT WA~ER USE.....................,.................... .11-1 0
I. WATER USE ENTITIES AND EXISTING FACILITIES..................II-10
1. Inventory of Entities and Existing Facilities..........II-10
2. Operation of the Existing System........................~1-12
J. EXISTING POWER SYSTEM SETTING...............................II-13

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CHAPTER III

HYDROLOGY AND WATER RIGHTS.............................II1-1

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A.
B.

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

WATER SUPPLY HyDROLOGy...... .'.............................. .111-1

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

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