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<br />TABLE OF CONTENTS
<br />
<br />AN ANALYSIS OF POTENTIAL IRRIGATION WATER SAVINGS IN THE
<br />GRAND VALLEY OF COLORADO
<br />
<br />Palle
<br />
<br />INTRODUCTION ...........................,...............,................".............., 1
<br />
<br />General ...,..........................,.............,....................,........,.... 1
<br />
<br />Purpose.. .. .. . . . . . , . . .. .. .. .. .. .. .. .. . . . . .. . , . , .. .. . .. , .. . . .. .. , .. .. .. .. . , .. , . .. . .. . ... 1
<br />
<br />Federal Programs . .. .. . . . . . . . .. . .. . . . .. ; . . . .. .. .. .. . . .. . . .. . . .. .. .. . , . .. . . .. , .. ... 2
<br />
<br />EXECUTIVE SUMMARY ..........."..,...........,.......,...............,...,....,.. 3
<br />
<br />OVERVIEW OF EXISTING IRRIGATION SYSTEMS .................,.................... 5
<br />
<br />General .......................,....,..........,..........................,.......,..... 5
<br />
<br />Grand Valley Project ......,............",.......,..........,..".."....,...... 5
<br />
<br />Grand Valley Irrigation Canal .......,......,.......,...........,.........."..,......, 7
<br />Complementary Operations ..................................,...............,....,.. 8
<br />
<br />mSTORIC ANALYSIS ................,........."............................,.............. 10
<br />
<br />Diversions ......................,....,........,........."................,........... 10
<br />
<br />Delivery System Seepage ....................................,...........,..........,.. 13
<br />
<br />Irrigated Acreage ... . .. , .. .. .. . .. . .. .. .. . .. , . .. . .. , .. .. . .. .. . . .. . . .. .. .. . .. .. . . . .. .. .... 14
<br />
<br />Cropping Patterns .........,',...........,..,....,........,........,..,.,..,... 14
<br />
<br />Consumptive Use .. .. . . . . . , . .. .. . . . , .. . . .. .. .. . . .. . . .. .. . .. , . . .. .. . .. . , .. . . . .. ... 14
<br />
<br />Depletion Analysis ,..................,..................,.......................,.. 14
<br />
<br />System Efficiencies. .. .. .. . . .. .. .. . .. . .. . . . .. .. , .. . .. . . . .. , . .. . . .. .. . .. .. . . . , . , , ... 17
<br />
<br />POTENTIAL SAVINGS IN THE GRAND VALLEY SYSTEMS ..............,....."... 20
<br />
<br />Managed Demands.. .. . , . . .. .. , .. . . .. . . .. .. , .. . .. .. .. . , , .. . . . . .. . .. . .. .. .. .. , . .. .. .. 20
<br />
<br />Delivery System Seepage ...".,....."...........,......,............,.......... 21
<br />
<br />Farm Losses.. .. .. , , , , .. . . , . , .. .. . , . .. . , . .. .. . , .. .. .. . .. . . . , .. . .. . .. , . .. . , .. .. .. ... 22
<br />
<br />Decreased Hydraulic Lift Requirements ........,...,........,........,..,...,.,. 22
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<br />I Bishop-Brogden Associates, Inc.
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