9581

• UCREFRP Catalog Number: 9581
• Author: U.S. Bureau of Reclamation.
• Title: Final Environmental Impact Statement - Navajo Reservoir Operations Volume II Technical Appendices.
• USFW Year: 2006.
• USFW - Doc Type: Grand Junction - Durango, CO.
• Copyright Material: NO

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municipal and industrial (M&I) and agricultural demands, canals, groundwater, and data
objects. Each object has many slots. Slots are essentially place holders for information
associated with that object. For example, a storage reservoir has slots such as inflow,
outflow, storage, evaporation, elevation, and volume tables. The slots that are visible
depend on the methods that the user selects. Almost all of the objects have several different
methods available, thus allowing the user to easily customize the physical behavior of an
object. For example, to change how a reservoir computes its evaporation, the user simply
selects an appropriate evaporation method from the list of methods on the reservoir object.
RiverWare adds the appropriate slots to the object and the user provides the necessary data.
The selected method and data control how the reservoir will compute its evaporation. After
the objects are put into the work space and the appropriate methods are selected, they can
be linked together so information from one object is propagated to another. For example,
the outflow of a reservoir could be linked to the inflow of a downstream river reach. By
selecting appropriate objects, methods, and linking the objects together, a river basin
network is formed.

After the river basin network is complete, the user can take advantage of many features and
utilities that make it easy to input, output, view, manipulate, and analyze data in a model.
These utilities include the Simulation Control Table, Data Management Interfaces, plotting,
snapshot, expression slots on data objects, and the ability to write binary Microsoft Excel
spreadsheet files. Simulation Control Tables allow the user to customize views of
information in the model and also to run the model and view the updated model run
results. Data Management Interfaces provide a way to transport data between a model and
external data sources, such as a database or an ASCn file. With the plotting utilities,
virtually any information in the model can be easily plotted for analysis and report
generation. The snapshot utility provides the user a way to save information from a model
run so it can be used to compare with subsequent model runs. Expression slots on data
objects provide a powerful way to algebraically manip~late data within the model.
Additionally, RiverWare has a robust diagnostics utility for checking for and helping to
pinpoint problems.

Current RiverWareapplications where the models are operational include the following
applications: (1) long-term policy planning model on the Colorado River (rules model with
monthly time-step), (2) midterm planning and operations model on Colorado River
(24-month simulation model with monthly time-step), (3) daily operational model for
Hoover Dam (BOPS, simulation model), (4) operational model for the TV A (TV A,
optimization model with 6-hour time-step), (5) Upalco Planning Model (rules model with
daily time-step) and (6) San Juan River Model for the San Juan basin (rules model with
monthly and pseudo daily time-step). RiverWare models currently under development
include the following: (1) Upper Rio Grande Water Operation Basin Model (accounting and
rules model with daily time-step), (2) Gunnison River Basin Model (rules model with daily
time-step), and (3) Yakima River Basin Models (rules model with both monthly and daily
time-steps).

RiverWare Model of the San Juan River.-Hydrologic simulation models, such
as RiverWare, are essentially mass balance models operating within a rule-based framework