WSPC12493 ‎(2)‎

• File Number: 8220.101.10
• Description: Colorado River Water Projects - Glen Canyon Dam-Lake Powell - Adaptive Management
• State: CO
• Basin: Colorado Mainstem
• Date: 4/1/1996
• Author: DOI-BOR
• Title: CRSSez - Annual Colorado River System Simulation Model - Overview-Users Manual - Update of 04-01-96 - With Revisions of 09-01-96 - 04-01-96
• Water Supply Pro - Doc Type: Report/Study

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,~ ""'1 3 '1 1
dULl i..

MWDsurp--California surplus schedule for MWD.

CAPsurp--Arizona surplus schedule for CAP.

SNWSsurp--Nevada surplus schedule for SNWS.

total NV, CA, AZ--Total normal use for each state. These values
must be present for the file to be read but are not used by EZ.

SNWSBNK--Fallowed amount by other users below Hoover for banking
by SNWS.

MWDBNK--Fallowed amount by other users below Hoover for banking
by MWD.

CAPBNK--Fallowed amount by other users below Hoover for banking
by CAP.

TRIBE--Normal use schedule by the Colorado River Indian Tribes
coalition. This use is included in the CAother and AZother
scheduled use but is broken out for Tribe conservation banking.

HYDRO. OAT

Table 2 shows the data columns in the HYDRO~DAT file. The values
are associated with hydrology or climate in some manner for the
indicated historical calendar year. EZ uses hydrology traces
with trace 1 usually beginning with the runoff for 1906 followed
by each subsequent year of runoff used out to the length of the
run. After running trace i, trace 2 may be run starting with
1907 as the beginning runoff year. This use of the historical
hydrology is termed "historical indexed sequential method". To
reduce the number of traces, the step size between beginning
trace years can be increased in the mainframe CRSS and EZ model.
This is generally not done in EZ with it's short run time because
the calculations and outputs done with EZ are not as involved as
they are with CRSS.

The hydrology file HYDR058.DAT is stochastically generated values
for the same parameters but cover 58,000 years. The generated
NAT, A.HOOVER, B.HOOVER, and GILAltd values have the same mean,
variance, sequential lag 1 correlation, and inter basin
correlation as the historical values in HYDRO. OAT.

NAT--Natural undepleted, unregulated runoff above Glen Canyon
Dam. Only NAT, A.HOOVER, B.HOOVER and optionally GILAltd runoff
gains are actually used as hydrology by the model. These are
computed as described in "Hydrologic Flow and Salt Data Base for
the Lower Colorado Region, Lees Ferry to Imperial Dam" dated
March 1992. The total use by reach used by the data base
document have sUbsequently been adjusted for unmeasured return

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