[Note: The amended beneficial uses designated in this rule,
adopted by the Environmental Quality Commission on November 16, 2023, are not
applicable for Clean Water Act purposes until approved by the U.S. EPA. For
applicable uses prior to EPA approval see "Beneficial Uses of Oregon's Waters"
on DEQ's Water Quality Standards website (https://www.oregon.gov/deq/wq/Pages/WQ-Standards-Uses.aspx).]
(1) Water quality in the Umatilla Basin (see
Figure 1) must be managed to protect the designated beneficial uses shown in
Table 310A (January 2015).
(2)
Designated fish uses to be protected in the Umatilla Basin are shown in Figures
310A, 310B, 310C and 310D (October 2023, except as noted in Table
310A).
(3) For purpose of
protecting active resident trout spawning areas, as required by OAR
340-041-0016
(1):
(a) The
dissolved oxygen spawning criteria will apply to the salmonid spawning
locations and times shown on OAR
340-041-0310: Figures
310D.
(b) In addition to the
salmonid spawning areas shown on Figures 310D, DEQ will determine where
additional active spawning areas used by resident trout occur as data becomes
available. DEQ will identify additional spawning habitat and areas determined
to be active resident trout spawning areas in a publicly available inventory.
The determinations recorded in the inventory will be incorporated into the
designated use tables and maps in OAR
340-041 periodically through rulemaking.
When resident trout spawning is determined to be an existing use based on the
best available data and is added to the resident trout spawning inventory, DEQ
will apply the spawning criteria for dissolved oxygen to protect the existing
trout spawning use.
[NOTE: View a PDF of Figures and Tables by clicking on "Tables"
link below.]
Notes
Or. Admin. Code
§
340-041-0310
DEQ 17-2003, f. & cert.
ef. 12-9-03; DEQ 3-2012, f. & cert. ef. 5-21-12;
DEQ
1-2015, f. & cert. ef.
1/7/2015;
DEQ
13-2019, amend filed 05/16/2019, effective
5/16/2019;
DEQ
27-2023, amend filed 12/21/2023, effective
12/21/2023
Statutory/Other Authority: ORS
468.020,
468B.030,
468B.035 &
468B.048
Statutes/Other Implemented: ORS
468B.030,
468B.035 &
468B.048
