WSP00530

• File Number: 8142
• Description: Trinidad Reservoir
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 4/1/1961
• Author: US DoI BoR
• Title: Special Report on Irrigation Function Trinidad Project Colorado
• Water Supply Pro - Doc Type: Report/Study

.

TABLE OF CONTENTS

,...,,(....("l.:.)
(. ;) J .....

CHAPTER l.--SYNOPSIS.

. . . . . . o. . . .

. . . .

. . . . . . .

CHAPTER 2.--WATER SUPPLY. .
Water resources. . . .

. . .

. . . . . . .

. . . . . . .

. .

. . . . .

. . . . . . . .

CHAPTER 3.--WATER REQUImmNTS. .
Consumptive use. . . . . . . . .
Irrigation requirement . . . . . . .
Headgate irrigation requirement.

. .

. . .

. .

. . .

. . .

. . . .

. . . .

. .

. .

. . .

. .

. . .

. .

. . .

. . .

. . .

CHAPTER 4.--WATER RIGHTS.
Upstream rights. . .
Trinidad Project . .
Ninem1le system. .. ..
Highland (Sizer) system. ... ...
Purgatoire River water administration. . .
Arkansas .Hi ver Compact . 6 . . . . . . .

. .

. .

. . .

. .

. . . .

. . .

. .

.

.

. .

. . . .

.

. .

. .

. .

. . . .

. .

. . .

. . . .

. .

. . . . . .

.

. .

. .

.

. . . .

CHAPTER 5.--WATER UTn.IZATION . . . . . . . . . . . . .
Historic supply. . . . . . . . . . . . . . . . . . . .
Project possibilities. . . . . . . . . . . . . . .
Proposed development . . . . . . . . . . . . . . . . .
. Cr:l.teria for return now accounting. . . . . . . . .
Total gross return now . . . . . . . . . . . . . .
Monthly distribution of annual return now. . . . .
GeographicaJ. distribution of return flow. . . . . .

CHAPTER 6.--EFF!XJTS OF PROPOSED TRINIDAD PROJEX:T OPERATION ON
JOHN. MARTIN RESERVOIR AND DOWNSTREAM WATER USERS. . . . .. 71
Probable effects of operation of Trinidad Reservoir for
irrigation . . . . . . . . . . . . . . . . . . . . . .. 71

LIST OF EXHIBITS

Number
1
2
3
4
5
6
7
8
. 9

~
1

15
15

. .

20
20
21
23

. .

33
33
33
36
36
37
39
40
40
52
55
60
60
63
65

. .

Purgatoire River Basin Map (Trinidad Project,
Colorado). . . . . . . . . . . . . . . . . . . . before page 1
Water supply for project lands, Trinidad Project,
historic and with project conditions . . . . . . .. 9
Comparison of Trinidad Project effects to supply at
John Martin Reservoir. . . . . . .. ... .... 14
Existing irrigation systems. . . . . . . . . . . . . .. 31
Return now - Canal diversion curves . . . . . . . . . . 62
Purgatoire River loss, Alfalfa to Ninem1le . . . . . .. 77
Purgatoire River loss, Niliem1le to Highland.. .... 80
Purgatoire River loss, AlfaJ.fa to Highland Dam .. .. 81
Purgatoire River loss, Alfalfa to Highland Dam . . . . . 82

11