Conn. Agencies Regs. § 26-141b-2

Current through November 7, 2024

Section 26-141b-2 - Definitions

As used in sections 26-141b-1 to 26-141b-8, inclusive, of the Regulations of Connecticut State Agencies:

(1) "Adequate margin of safety" means a margin of safety that is greater than or equal to 1.15 or as otherwise approved in writing by the Commissioner of Public Health;

(2) "Agricultural" or "agriculture" means "agriculture" or "farming", as defined in section 1-1 of the Connecticut General Statutes;

(3) "Anadromous" means a species of aquatic life that spawns in freshwater and migrates to salt water to complete its life cycle as an adult;

(4) "Antecedent period" means the fourteen consecutive days immediately preceding the date the required release is calculated pursuant to section 26-141b-6(a) of the Regulations of Connecticut State Agencies;

(5) "Best management practices" means those activities, management practices, facilities or procedures which are generally accepted as the most effective and practical means to reduce the impact of human activity on natural stream flow;

(6) "Bioperiod" means the period during which certain biological processes dependent on stream flow rates occurs or is likely to occur;

(7) "Bioperiod Q25" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on 25 percent of days in a bioperiod calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(8) "Bioperiod Q50" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on 50 percent of days in a bioperiod calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(9) "Bioperiod Q80" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on 80 percent of days in a bioperiod calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(10) "Bioperiod Q90" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on 90 percent of days in a bioperiod calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(11) "Bioperiod Q95" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on 95 percent of days in a bioperiod calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(12) "Bioperiod Q99" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on 99 percent of days in a bioperiod calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(13) "Clupeid spawning bioperiod" means that period from May 1 to May 31, inclusive, of each year;

(14) "Commissioner" means the Commissioner of the Department of Energy and Environmental Protection or such commissioner's designated agent or representative;

(15) "Community water system" means a "community water system", as defined in section 19-13-B102 of the Regulations of Connecticut State Agencies;

(16) "Dam" means "dam", as defined in section 22a-409-1 of the Regulations of Connecticut State Agencies;

(17) "Department" means the Department of Energy and Environmental Protection;

(18) "Diversion" means "diversion", as defined in section 22a-367 of the Connecticut General Statutes;

(19) "Divert" means "divert", as defined in section 22a-367 of the Connecticut General Statutes;

(20) "Geomorphic" means those landforms resulting from geologic processes;

(21) "Habitat forming bioperiod" means that period from March 1 to April 30, inclusive, of each year;

(22) "Interbasin transfer" means "interbasin transfer", as defined in section 22a-367 of the Connecticut General Statutes;

(23) "Margin of safety" means "margin of safety", as defined in section 25-32d-1 a of the Regulations of Connecticut State Agencies;

(24) "Maximum extent practicable" means able to be constructed or implemented consistent with sound science and engineering principles; and economically and otherwise reasonable in light of the societal and environmental benefits to be gained;

(25) "Median natural flow" means the naturally occurring daily stream flow that is predicted to be equaled or exceeded on fifty percent of days in a period of record calculated using methods developed by the U.S. Geological Survey or otherwise acceptable to the commissioner;

(26) "Overwinter bioperiod" means that period from December 1 to February 28 or February 29, inclusive, of each year;

(27) "Outlet works" means constructed features appurtenant to a dam's operation, including but not limited to structures, spillways, conveyances, and conduits used for the safe operation of a dam and control of a release.

(28) "Person" means "person" or "municipality", as defined in section 22a-423 of the Connecticut General Statutes;

(29) "Public water supply" means any surface or groundwater resource that provides water for a community water system;

(30) "Rearing and growth bioperiod" means that period from July 1 to October 31, inclusive, of each year;

(31) "Registration" means a document filed by a person in accordance with section 22a-368(a) of the Connecticut General Statutes that establishes the location of a diversion of surface or groundwater from a river or stream system in existence prior to 1982, the amount of that diversion, and the use of water diverted at that location;

(32) "Release" means the total release of water from a dam to provide for the preservation, protection, and propagation of fish and other forms of aquatic life and includes dam leakage, spillage from a primary spillway, spillage return flow from an auxiliary spillway, and discharge from outlet works;

(33) "Resident spawning bioperiod" means that period from June 1 to June 30, inclusive, of each year;

(34) "River or stream segment" means a discrete, contiguous reach of river or stream channel for which a uniform classification has been adopted. "River or stream segment" does not mean dam outlet works;

(35) "River or stream system" means a river or stream channel, including all tributary streams and any water, including groundwater, that contributes flow to such river or stream;

(36) "Salmonid spawning bioperiod" means that period from November 1 to November 30, inclusive, of each year;

(37) "Source" or "source of supply" means any well, spring, reservoir, stream, river or other location where water is siphoned, pumped, channeled, or withdrawn for water supply purposes, including interconnections with other water companies;

(38) "Usable storage" means "usable storage", as defined in section 25-32d-1 a of the Regulations of Connecticut State Agencies;

(39) "Water conservation" means measures designed to promote efficient use of water, to eliminate waste of water, and to encourage the reuse of water; and

(40) "Water supply plan" means a plan filed and approved pursuant to section 25-32d of the Connecticut General Statutes.

Conn. Agencies Regs. § 26-141b-2

Effective December 12, 2011