WSP12227

• File Number: 8143.600
• Description: John Martin Reservoir - Operation Studies
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 7/21/1981
• Title: RESSYM - A John Martin Reservoir System Simulation - Summary
• Water Supply Pro - Doc Type: Report/Study

This document is not an invoived discussion of the
presently adopted operating criteria for John Martin
Reservoir nor is it intended to be a discussion of the
implementation of the authorities of the Arkansas River
Compact Administration or Corps of Engineers.

Attention: This program is written in CDC Fortran, Extended
Version 4.

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John Martin Heservoir System Simulation

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Purpose:

This program is designed to compare the historicai
operation of John Martin Reservoir with that which would
have occurred under the presently adopted operating
criteria for the reservoir. Data required to accomplIsh
this objective are reservoir outflow data, content d~ta,
and upstream flow data to check criticai inflows for
storage. Actual infiows require computation as theoretical
inflows which are nothing more than a reasonabie
representation of the actual relationships between
reservoir inflow, outflows, and change in storage occurring
dally.

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Program Description:

Given the operating criteria and historical data regarding
the operation of John Martin Reservoir, this program
sImulates the historical operation as it would have been
under the operating criteria. The simulated data and
historical data as end of the day contents are
simultaneously plotted on one sheet for comparison.

Program Useage:

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In 1980, the Arkansas River Compact Administration adopted
a storage resolution which set forth the operating criteria
for John Martin Reservoir. Entities upstream of the
reservoir have expressed some concern that these new
operating criteria wiil result in an earlier than usual
emptying of the reservoir's conservation pool and thereby
allow an earlier than usual cail by downstream senior water
rights for the passage of river water past the upstream
entities holding more junior water rights. As the
operating criteria were set forth to emulate the historical
operation1 of the reservoir, the comparison of the
historicai operation of the reservoir with that which
would have occurred under the new operating criteria should
reveal any differences in the outcome of the operation.
The Use of this program is therefore evolutionary in that
the simulations will point out any inadequacies in and/or
problems with the operating criteria. Further simulation