PROJ01966 ‎(2)‎

• Contract/PO #: C153794
• Contractor Name: Colorado Water Protective and Development Association
• Contract Type: Loan
• Water District: 0
• Loan Projects - Doc Type: Feasibility Study

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by Steven Larson, as described in the July 1994 Repolrt by Arthur L. Littlewortb, Special
Master, in Kansas v. Colorado, No. 105, Original, United States Supreme Court.

d. .Kansas Hydrologic-Institutional Model- means the computer model,
as revised by the Kansas replacement experts, used to detennine depletions to Stateline
flow in Kansas v. Colorado, No. 105, Original, United States Supreme Court, as
described in the July 1994 Report by Arthur L. LittIeworth, Special Master.

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e. .Out-of-priority depletions to senior surface water rights in Colora-
do. mean stream depletions caused by diversions of tributuy ground water in the
Arkansas River Basin in Colorado which would deprive senior surface water rights in
Colorado of the amount of water to which said surface water rights would have been
entitled in the absence of such ground water diversions.

f. -Post-compact ground water diversions- mean (I) diversions of
tributary ground water from the Valley Fill Aquifer and surficial aquifers along the
Arkansas River between Pueblo and lhe Stateline by well users having water rigilts with a
priority of, or junior to, December 14, 1948, and (2) diversions of tributary ground water
by well users having decreed pre--<:ompact water rights for irrigation use in excess of the
pre-compact pumping allowances of such rights. except to the extent permitted by Rule
),).

g. "Stream depletions" means depletions to the Arkansas River or other
naDJral streams in the Arkansas River Basin in Water Division 2 caused by diversions of
lributary ground water in the Arkansas River Basin in Colorado.

h. "Tributary ground water in the Arkansas River Basin in Colorado"
means all underground water as defined in section 37-92-103(11), 15 C.R.S.. in the State
of Colorado tributary to the Arkansas River or other natural streams in the Arkansas
River Basin in Water Division 2.

i. "Unit response functions" mean a mathematical method to detennine
the timing and location of stream depletions or accretions from a unit stress on an aqui-
fer. .

j. "Usable Stateline flow" means the flow of waters of the Arlcmsas
River, as defined in Article ill of the Arkansas River Compact. as determined by gaging
stations located at or near the Stateline in accordance wilth the Arlamsas River Compact,
the depletion of which would materially deplete waters of the Arlamsas River in usable
quantity or availability for use to the water users in Kansas under the Arkansas River
Compact.

k. "Valley Fill Aquifer and surficial aquifers along the Arkansas River
between Pueblo and the Stateline" mean those aquifers a'i delineated on the attached map.

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