Basin Study Documents

The Draft Basin Study Report is under development now and will summarize the information generated in the Basin Study. Reclamation expects to have a Draft Report publicly-available by ​Fall 2019. It will be posted here when available. The table below compiles Technical Memos and other documentation generated in the Basin Study.



 information provided  


Summary Report

Final Report

Summarizes all the work in the Basin Study 

BSWG 2019
  Basin Study Work Group       Basin Study Work Group Charter   
 Defines the purpose, structure, and processes
  for the Basin Study Work Group (BSWG) as agreed  
to by the BSWG Steering Committee.

BSWG 2014
 Basin Study Administration  Memorandum of Agreement:
Deschutes Basin Board of
Control and Reclamation
Establishes the terms guiding
performance of the Basin Study and
the associated cost-share responsibilities
between the Deschutes Basin Board of
Control (acting as the fiscal agent for
the BSWG) and Reclamation.

 Reclamation 2015
 Study Scope, Schedule & Budget  Plan of Study  
Sets forth the planned scope,
schedule & budget for the Basin Study;
tasks to be addressed within the fixed budget
were evaluated and agreed upon by the BSWG

 Reclamation 2015
 Hydrology and Water Supply

Technical Memorandum:
Analysis of Regulated River Flow
in the Upper Deschutes Basin using
Varying In-Stream and
Out-of-Stream Conditions

Describes modeling studies of river flows,
incorporating ranges of hydrologic conditions
based on recorded data, current water usage
patterns and water rights, and hypothetical
water management scenarios; identifies estimated
shortages in water supplies for assumed conditions.

 Reclamation 2018

Unregulated Flows in the Upper
Deschutes Basin, Oregon

Describes/estimates what the flows 
would be in the Upper Deschutes basin river system 
without any influence from regulation activities 
such as reservoir operation, diversion from the river, 
or return flow from irrigation activities. 
 Climate Change  Technical Memorandum:
Compilation and Analysis of Climate Change
 Information in the Deschutes Basin

Presents climate change models used
to project potential future variability in
precipitation and temperature; discusses
applications relative to Basin Study objectives.

 Reclamation 2018
 Instream Ecological Needs  
Technical Memorandum:
Oregon Spotted Frog and
Deschutes Redband Trout Habitat
Modeling and Riparian Analysis at
Two Sites on the Upper Deschutes River

 Instream flow study at two sites on the
Upper Deschutes River below Wickiup Reservoir;
evaluates relationships between streamflow and
both instream and adjacent riparian wetland habitats.
 River Design Group 2017
 Stream Temperature  Technical Memorandum:
Prineville Reservoir and
Crooked River Temperature Model
Development of a temperature model of
Prineville Reservoir and the Crooked River;
explores the effects of potential water management
approaches on water temperatures.

 Portland State University
(PSU) 2017
   Technical Memorandum:
Whychus Creek and
Middle Deschutes River
Temperature Assessments

 Assessment of relationships between
stream temperature, streamflow and
air temperature at three sites (Whychus Creek,
Middle Deschutes River, and Tumalo Creek);
regression analyses used to assess potential
predictors of stream temperatures.

 Upper Deschutes
Watershed Council 2016
 Irrigation District
Infrastructure and
Water Use
Technical Memoranda:
Literature Reviews (individual documents)
for Arnold, Central Oregon, Lone Pine,
North Unit, Ochoco, Swalley, Three Sisters,
and Tumalo Irrigation Districts
link to document forthcoming

 Compilations of available data on
irrigation systems including supply,
storage, distribution, water use,
and water conservation.
 Anderson Perry &
Associates 2016
 Water Conservation Tools
 Technical Memorandum:
Water Conservation Assessment

 High-level summary estimates of
water conservation potential and
associated costs for the eight irrigation
districts in the study area;
addresses piping district-owned canals,
piping private laterals,
and on-farm conservation.

 Watershed Professionals
Network 2017
 Market-Based Tools  Technical Memorandum:
Market-Based Approaches as a
Water Supply Alternative (LPE Task 7)
Evaluates the potential for market-based
approaches as water supply options;
addresses price incentives to promote
efficient water use and reallocation of
existing supply relative to potential water
management objectives.

 Summit Conservations
Strategies 2017
 Enhanced/New Storage  Technical Memorandum:
Assessment of Potential Enhances
or New Storage Opportunities

Provides information about potential approaches,
additional storage volumes, and costs for new
water storage opportunities; helps inform evaluations
of storage options as a possible element of future
water management strategies.

 Reclamation 2018
 Legal & Policy Factors  
Technical Memorandum:
Water Right Assessment:
Historical Diversions and
Instream Water Rights in
the Deschutes Basin (Task 1A)

 Summary of existing information on water rights
and water use (irrigation, municipal, quasi-municipal
and instream) in the Upper Deschutes basin.
 GSI Water Solutions, Inc. 2017
   Technical Memorandum:
Water Right, Legal and Policy Opportunities
and Impediments for Stored Water,
Forbearance, Instream Flow Protection,
and Mitigation (Task 2, Part 2)
Evaluates potential water right opportunities
for managing reservoirs to increase streamflow
in the Upper Deschutes outside of irrigation
season and to establish mitigation credits
(note: Task 2, Part 1 was not implemented
per BSWG decision as additional
information became available).

 GSI Water Solutions, Inc. 2016
Technical Memorandum:
Water Right, Legal and Policy
Opportunities and Impediments
Associated with Options for
Water Movement (Task 4)

 Explores potential ways to move
water rights and/or water
supply to meet various needs.
 GSI Water Solutions, Inc. 2017
Technical Memorandum:
Water Right Opportunities and
 Impediments for New or
 Expanded Reservoir Storage (Task 5)

 Identifies opportunities and impediments
for new or expanded water storage
from a water rights/legal perspective.
 GSI Water Solutions, Inc. 2016
Technical Memorandum:
Groundwater Mitigation under the
 Deschutes Basin Groundwater Mitigation Program;
A Summary of Projected Supply and Demand
 (Task 6)

 Evaluates the projected supply of,
and demand for, mitigation credits for
allowing new uses of groundwater.
 GSI Water Solutions, Inc. 2017

Technical Memorandum:
Evaluate Water Right, Legal and Policy
Opportunities and Impediments Associated
with Several Potential Actions in
Whychus Creek (Task 3)

 Considers potential groundwater-surface
water exchanges and below ground
storage opportunities in the Whychus Creek basin.
 GSI Water Solutions, Inc. 2018
 Hydrologic Forecasting Improvements  Technical Memorandum:
Current Hydrologic Forecasting,
Potential Improvements, and Next Steps
Evaluation of opportunities for improvements
in hydrologic forecasting approaches that could
enhance water management operations in the
Upper Deschutes and Crooked River basins.

 Watershed Professionals
Network 2016
  Technical Memorandum:
Upper Crooked River Basin SNOTEL
Evaluates potential opportunities for improving
hydrologic forecasting that could enhance water
management operations; explores possible sites for
additional snow telemetry stations in the
Upper Crooked River basin.

 Reclamation 2016
 Improved Gaging of Diversions

Technical Memorandum: 
Crooked River – Diversion Gaging

Evaluates potential opportunities for
improving water management by
installing additional gaging on
Crooked River diversions
below Prineville Reservoir. 
 Reclamation 2017
Potential Storage Enhancement
through Flood Control Operations 
Technical Memorandum:
Prineville Reservoir – Operating Rule Curve
Evaluates the potential for enhancing storage
at Prineville Reservoir via modifications to the
rule curve guiding flood control operations.

 Reclamation 2018
 Multi-Criteria Evaluations Technical Memorandum:
Multi-Criteria Evaluation of
 Alternatives and Scenarios

Summarizes criteria developed by the BSWG
for evaluation of potential water resource
management tools; evaluates potential
water management tools and hypothetical
scenarios relative to the identified criteria. 
 Summit Conservation
Strategies 2018
 Technical Sufficiency Review  
Technical Memorandum:
Summary of Technical Sufficiency Reviews,
 Upper Deschutes River Basin Study

Provides comments received from technical
reviewers on Basin Study technical documentation;
includes descriptions of how comments are
addressed in the Basin Study report. 
 Reclamation 2018