1. (1) The following instream flows were established June 3, 1983. Water rights established after that date and prior to the effective date of this rule are subject to these instream flows. The June 3, 1983, instream flows for the following stream management units in WAC 173-545-040 are as follows:

   1983 Instream Flows in the Wenatchee River

   (instantaneous cubic feet per second)

   Month	Day	12-4570.00Wenatchee R. at Plain	12-4580.00Icicle Cr. near Leavenworth	12-4590.00Wenatchee R.at Peshastin
   Jan	1	550		120		700
   	15	550		120		700
   Feb	1	550		120		700
   	15	550		120		700
   Mar	1	550		150		750
   	15	700		170		940
   Apr	1	910		200		1300
   	15	1150		300		1750
   May	1	1500		450		2200
   	15	2000		660		2800
   Jun	1	2500		1000		3500
   	15	2000		660		2600
   Jul	1	1500		450		1900
   	15	1200		300		1400
   Aug	1	880		200		1000
   	15	700		170		840
   Sep	1	660		130		820
   	15	620		130		780
   Oct	1	580		130		750
   	15	520		130		700
   Nov	1	550		150		750
   	15	550		150		750
   Dec	1	550		150		750
   	15	550		150		750

   1983 Instream Flows in the Wenatchee River

   (instantaneous cubic feet per second)

   Month	Day	12-4620.00Mission Cr. near Cashmere	12-4625.00Wenatchee R.at Monitor
   Jan	1	6		820
   	15	6		820
   Feb	1	6		820
   	15	6		800
   Mar	1	6		800
   	15	11		1040
   Apr	1	22		1350
   	15	40		1750
   May	1	40		2200
   	15	40		2800
   Jun	1	28		3500
   	15	20		2400
   Jul	1	14		1700
   	15	10		1200
   Aug	1	7		800
   	15	5		700
   Sep	1	4		700
   	15	4		700
   Oct	1	4		700
   	15	5		700
   Nov	1	6		800
   	15	6		800
   Dec	1	6		800
   	15	6		800

2. (2) Instream flow hydrographs, WAC 173-545-170, Appendix 1 to this rule, shall be used for identification of instream flows on those days not specifically identified in WAC 173-545-050(1).
3. (3) The instream flows in subsection (1) of this section shall retain their original priority date and quantities, except where the flows in WAC 173-545-060(7) are lower than the flows in subsection (1) of this section. In those instances, existing water rights subject to subsection (1) of this section will instead be subject to the lower flow in WAC 173-545-060(7). However, the priority date of the original right remains unchanged. If, at a future date, it is determined that the higher flows in subsection (1) of this section are required to retain flows necessary to preserve fish, wildlife, scenic, aesthetic, or other environmental values, the department will issue an order notifying the holders of the conditioned permits and certificates of such a decision and the justification.

[Statutory Authority: Chapters 90.82, 90.54, 90.22, 90.03, and 90.44 RCW. WSR 08-01-045 (Order 07-06), § 173-545-050, filed 12/12/07, effective 1/12/08. Statutory Authority: Chapters 90.54, 90.22 and 75.20 RCW. WSR 83-13-016 (Order DE 83-8), § 173-545-050, filed 6/3/83.]