Oregon Administrative Rules › Chapter 690 - WATER RESOURCES DEPARTMENT › Division 76 - ESTABLISHMENT OF MINIMUM PERENNIAL STREAMFLOWS › Section 690-076-0010 - Definitions

Current through Register Vol. 63, No. 7, July 1, 2024
The following definitions apply to OAR 690-076-0005  to
				690-076-0035.
(1) "Affected Local
			 Government" means any local government as defined in OAR 690-005-0015, within
			 whose jurisdiction a minimum perennial streamflow is proposed or
			 established.
(2) "Basin" means any
			 one of the major drainage areas identified by the Commission for program
			 planning and management purposes. Basin boundaries are identified on Water
			 Resources Department map 0.6.
(3)
			 "Classification" means the designation in basin programs of allowed and
			 preferred beneficial uses of a specified water source as provided in ORS
			 536.340. A classification may
			 also reserve quantities of water for preferred beneficial uses.
(4) "Commission" means Water Resources
			 Commission.
(5) "Department" means
			 Water Resources Department.
(6)
			 "Director" means Water Resources Director.
(7) "Minimum Perennial Streamflow", also
			 minimum streamflow, means an administrative rule that establishes a flow
			 necessary to support aquatic life or minimize pollution. The rule includes a
			 priority date and specifies streamflow levels for all or any period of the
			 year. It establishes priority for instream use over future appropriations and
			 identifies flow objectives for future management in streams where shortages
			 occur. The Commission will assume minimum streamflow levels are most
			 appropriate for support of aquatic life if the flows are the lowest level
			 which, if maintained, would support a population of key fish species consistent
			 with the management objectives of Oregon Department of Fish and Wildlife. The
			 Commission will assume minimum streamflow levels are most appropriate for
			 minimizing pollution if the flows are the lowest level which, if maintained,
			 would assure that projected loading levels from adequately treated wastes and
			 best management practices for non-point sources would not result in violation
			 of water quality standards of the Department of Environmental
			 Quality.
(8) "Planned" means a
			 determination has been made for a specific course of action either by
			 administrative or budgetary action of a public body or by engineering, design
			 work, investment toward construction or application for a development permit
			 from the private sector.
(9)
			 "Potential" means an option which could reasonably occur in the future but is
			 not planned. A feasibility determination may or may not have been completed,
			 but the option has not been ruled out.
(10) "Subbasin" means any subarea of a basin
			 defined by surface drainage patterns such as the drainage basin of any
			 tributary, or the area draining to any point on a river, or draining between
			 two points on a river.
(11)
			 "Withdrawal" means an administrative rule prohibiting all new appropriations
			 for particular uses from a source for part or all of the year as provided in
			 ORS 536.410. A withdrawal can be set
			 for a prescribed length of time or indefinitely until modified or revoked by
			 the Commission.
Stat. Auth.: ORS 183, ORS 197 & ORS 536
Stats. Implemented: