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Draft Feasibility-Level Engineering Report Continued Phased Development of the Columbia Basin Project Enlargement of the East Low Canal and Initial Development of the East High Area
Odessa Subarea Special Study
Columbia Basin Project, Washington
U.S. Department of the Interior Bureau of Reclamation Technical Service Center October 2010

Mission Statements
The mission of the Department of the Interior is to protect and provide access to our Nations natural and cultural heritage and honor our trust responsibilities to Indian Tribes and our commitments to island communities.
The mission of the Bureau of Reclamation is to manage, develop, and protect water and related resources in an environmentally and economically sound manner in the interest of the American public.

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BUREAU OF RECLAMATION
Technical Service Center Denver, Colorado
Draft Feasibility-Level Engineering Report Continued Phased Development of the Columbia Basin Project Enlargement of the East Low Canal and Initial Development of the East High Area Odessa Subarea Special Study Columbia Basin Project, Washington
Paul M. Ruchti, P.E. Date Design Team Leader, Plant Structures Group (86-68120)
Alfred I. Bernstein, P.E. Date Peer Reviewer, Plant Structures Group (86-68120)
REVISIONS
Date Description Team Leader Peer
Reviewer

Acronyms and Abbreviations
Acronyms and Abbreviations F degree Fahrenheit
AASHTO American Association of Highway Transportation Officials
ACC Groundwater Expansion
APS Allowance for Procurement Strategies
ASCE American Society of Civil Engineers
ASTM American Society for Testing and Materials
AWWA American Water Works Association
b bottom width of canal
BRBC Black Rock Branch Canal
Cv gallons per minute that cause 1 psi loss through a fully open valve
CBP Columbia Basin Project
CMP corrugated metal pipe
CRBG Columbia River Basalt Group
CRI MOU Columbia River Initiative Memorandum of Understanding
D inner diameter of pipe work (feet)
DEIS Draft Environmental Impact Statement
ea each
ECBID East Columbia Basin Irrigation District
Ecology Washington State Department of Ecology
EG engine generator
e.g. abbreviation for a Latin expression meaning for example
etc. abbreviation for a Latin expression meaning "and other things" or "and so on"
EHC East High Canal
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Draft Engineering Technical Odessa Subarea Special Study
EIS environmental impact statement
El. elevation
ELC East Low Canal
ES Executive Summary
ESA Endangered Species Act
EQU Equation survey terminology
f friction factor
FDR Franklin Delano Roosevelt
ft feet
ft/s feet per second
ft2/s square feet per second
ft2 square feet
ft3 cubic feet
ft3/s cubic feet per second
ft3/ ft2/day cubic feet per square feet per day
G groundwater
g acceleration due to gravity (ft/s)
gpm gallons per minute
gpm/acre gallons per minute per acre
hf hydraulic headloss (feet)
H head, feet
HDPE high-density polyethylene
HEP Habitat Evaluation Procedure
HVAC heating, ventilating, and air conditioning
I-90 Interstate Highway 90
ii

K loss coefficient based on velocity head (V2/2g)
kV kilovolt
kVA kilovolt Ampere
L length of pipe work (feet)
LRFD Load and Resistance Factor Design
M moment magnitude
MP most probable
MPH most probable high
MPL most probable low
MVA Mega Volt Ampere
n coefficient of roughness
NAD83 North American Datum 1983
NAVD29 North American Vertical Datum 1929
NAVD88 North American Vertical Datum 1988
NEPA National Environmental Policy Act
NMFS National Marine Fisheries Service
Odessa DEIS Odessa Subarea Special Study Draft Environmental Impact Statement
Odessa Subarea Odessa Ground Water Management Subarea
O&M Operations and Maintenance
OM&R operation, maintenance, and replacement
PASS Project Alternative Solution Study
PC point of curvature
PGA peak horizontal ground acceleration
PMF Probable Maximum Flood
PMT Project Management Team
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POU Point of Use
PRV Pressure Reducing Valve
PSHA Probabilistic seismic hazard analysis
psi Pounds per square inch
psig Pounds per square inch guage
PT Point of Tangency
PVC Polyvinyl chloride
Q Flow rate, cubic feet per second
r hydraulic radius or wetted perimeter
Reclamation Bureau of Reclamation
S surface water
SA Spectral acceleration
SCADA Supervisory Control and Data Acquisition
SCBID South Columbia Basin Irrigation District
Secretary Secretary of the Interior
SF-6 sulfur hexafluoride
Sta station
State State of Washington
Study Odessa Subarea Special Study
TAPS Computer software Transient Analysis of Pipe Systems
TDH Total Design Head
TDHMax Maximum Total Design Head
TEFC Totally-enclosed fan-cooled
TEWAC Totally-enclosed water-to-air cooled
TRS Township/Range/Section
iv

V Velocity of fluid (feet/second)
WDFW Washington State Department of Fish and Wildlife
WDOT Washington State Department of Transportation
WP1 Weather Protected 1
WR2 Mass Moment of Inertia, Weight of revolving parts and the square of the radius of gyration
WSC water service contract
WSCG water service contract with groundwater backup
yd3 Cubic yards
YFB Yakima Fold Belt
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Executive Summary
Executive Summary The Odessa Subarea Special Study (Study) is investigating replacing groundwater currently used for irrigation in the Odessa Ground Water Management Subarea with surface water as part of continued phased development of the Columbia Basin Project (CBP). The aquifer is declining to such an extent that crop irrigation is at risk, and domestic, commercial, municipal, and industrial uses and water quality are also threatened. In response to the publics concern about the declining aquifer and associated economic and other effects, Congress has funded the Bureau of Reclamation (Reclamation) to investigate the problem. The State of Washington has partnered with Reclamation by providing funding and collaborating on various technical studies.
Potential Actions Reclamation can only deliver water to lands authorized to receive CBP water. Up to 140,000 groundwater-irrigated acres in the Study area are eligible to receive CBP surface water.
To develop comprehensive alternatives, the Study divided actions into:
Water Delivery Alternatives. Water delivery alternatives consist of infrastructure such as canals, pipe laterals, pumping plants, and re-regulation reservoirs to convey and deliver surface water to the groundwater-irrigated lands. The alternatives involve either building a new East High Canal system, expanding and extending the existing East Low Canal system, or various combinations of the two systems.
Water Supply Options. Water supply options consist of new or existing storage facilities in various combinations that could store the replacement surface water supply for use in the Odessa Subarea.
The alternatives can be combined in various configurations for full operational alternatives, which would include both water delivery and storage. Several water supply options may be needed to provide sufficient water supply for an alternative.
Water Delivery Alternatives
Three water delivery alternatives were examined:
Alternative 1No Action. The No Action Alternative is a requirement of the National Environmental Policy Act (NEPA) process. This report does not discuss this alternative since no engineering work was completed for this alternative.
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Alternative 2Partial-Replacement Alternative. The Partial-Replacement Alternative includes enlarging the existing East Low Canal south of Interstate Highway 90 (I-90) and constructing a 2.5-mile extension1 of the canal east toward Connell, Washington. This alternative includes constructing pumping plants and buried pipelines to deliver the water to the irrigated fields.
Alternative 3Full-Replacement Alternative. The Full-Replacement Alternative involves constructing the northern portion of a new East High Canal system (sized to 15-percent of the capacity of the original feasibility plan) and siphons and tunnels (sized to 100-percent of that capacity); enlarging the existing East Low Canal sections south of Weber Branch Siphon (near I-90); and constructing a 2.5-mile extension east towards Connell, Washington.
Table ES.1 shows the amount of water needed for each alternative and the number of acres that each alternative would supply.
Table ES- 1. Feasibility Alternatives and Estimated Water Supply Needs
Alternative Estimated Water
Supply Needs (Acre-Feet)
Estimated Groundwater-irrigated Lands to be
Supplied Water (Acres) 1 0 0 2 176,343 57,000 3 347,137 102,600
Water Supply Options
Reclamation would need to divert additional Columbia River water greater than current CBP diver

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