The following words or phrases have the following meanings
in this subchapter unless the context clearly indicates otherwise:
(1) Annual average inflow--the long-term average annual
volume of freshwater inflows at the most downstream point in the Colorado
River Basin.
(2) Annual strategy frequency--the frequencies at which
specific levels of freshwater inflows occur and which are used for
the sole purpose of providing additional freshwater inflows to Matagorda
and Lavaca Bays through voluntary strategies.
(3) Average condition--for all measurement points,
the hydrologic condition that would occur approximately 50% of the
time.
(4) Dry condition--for all measurement points except
those measurement points on the Colorado River below Lake Travis,
the hydrologic condition that would occur approximately 20% of the
time and represents periods when conditions are dry but not severe.
For all measurement points on the Colorado River below Lake Travis,
the hydrologic condition that would occur approximately 45% of the
time and that is intended to represent periods when conditions are
drier than average conditions but not severe.
(5) Fall--for the measurement points on the Colorado
River and its tributaries above Lake Travis, the period of time September
through October, inclusive, and for all other measurement points,
the period of time September through November, inclusive.
(6) Fall inflow quantity--during any individual calendar
year, the maximum freshwater inflow quantity, at the most downstream
point in the Lavaca River Basin and at the most downstream point on
Garcitas Creek in the Lavaca-Guadalupe Coastal Basin, occurring during
any period of three consecutive months beginning in the months of
August, September, or October.
(7) Fall season quantity--the maximum freshwater inflow
quantity, at the most downstream point in the Colorado River Basin,
occurring during any three consecutive months during the period from
August through December, inclusive.
(8) Intervening inflow quantity--the quantity of freshwater
inflows, at the most downstream point in the Lavaca River Basin and
at the most downstream point on Garcitas Creek in the Lavaca-Guadalupe
Coastal Basin, occurring during the remaining six months of the calendar
year, that were not included in the Fall Inflow or Spring Inflow for
that calendar year.
(9) Intervening season quantity--the quantity of freshwater
inflows, at the most downstream point in the Colorado River Basin,
occurring during the six months of the calendar year that are not
counted towards the fall season quantity or the spring season quantity
for that year.
(10) Inflow regime level--one of the annual freshwater
inflow patterns, at the most downstream point in the Colorado River
Basin for Matagorda Bay, that includes a spring season quantity, a
fall season quantity, and an intervening season quantity as described
in Figure: 30 TAC §298.330(a)(2) of this title (relating to Environmental
Flow Standards), or at the most downstream point in the Lavaca River
Basin and the most downstream point on Garcitas Creek in the Lavaca-Guadalupe
Coastal Basin for Lavaca Bay, that includes a spring inflow quantity,
a fall inflow quantity, and an intervening inflow quantity as described
in Figure 30: TAC §298.330(c) of this title.
(11) Long-Term annual strategy quantity--the annual
average volume of freshwater inflows, which is used for the sole purpose
of providing additional freshwater inflows to Matagorda Bay through
voluntary strategies.
(12) Modeled annual frequency--the frequency at which
specific levels of freshwater inflows occur in the commission's water
availability models for the Colorado and Lavaca river basins and the
Colorado-Lavaca and Lavaca-Guadalupe coastal basins at the time the
first water right application subject to this subchapter is processed.
(13) Monthly threshold inflow--the total volume of
freshwater inflows, at the most downstream point in the Colorado River
Basin, in any calendar month.
(14) Severe condition--for all measurement points,
the hydrologic condition that would occur approximately 5% of the
time and that is intended to represent the driest periods.
(15) Spring--the period of time March through June,
inclusive.
(16) Spring inflow quantity--during any individual
calendar year, the maximum freshwater inflow quantity, at the most
downstream point in the Lavaca River Basin and at the most downstream
point on Garcitas Creek in the Lavaca-Guadalupe Coastal Basin, occurring
during any period of three consecutive months beginning in the months
of February, March, April, or May.
(17) Spring season quantity--during any individual
calendar year, the maximum freshwater inflow quantity, at the most
downstream point in the Colorado River Basin, occurring during any
three consecutive months during the period from January through July,
inclusive.
(18) Sound ecological environment--characterized by
flow regimes that support existing biological communities in rivers,
riparian, bay, and estuary habitats.
(19) Summer--the period of time July through August,
inclusive.
(20) Wet condition--for all measurement points except
those measurement points on the Colorado River below Lake Travis,
the hydrologic condition that would occur approximately 25% of the
time and that is intended to represent the wettest conditions.
(21) Winter--for the measurement points on the Colorado
River above Lake Travis, the period of time November through February,
inclusive, and for all other measurement points, the period of time
December through February, inclusive.
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