Wash. Admin. Code § 173-548-020 – Establishment of base flows

(1) Base flows are established for stream management units with monitoring to take place at certain control points as follows:

STREAM MANAGEMENT UNIT INFORMATION

Stream Management Unit Name, Control Station Name and Number		Control Station Location by River Mile, Section, Township, Range	Affected Stream Reach (includes tributaries)
Lower MethowMethow R. nr.Pateros(12.4499.50)	6.7 20-30-23E	Methow River confluence with Wells Pool to confluence with Twisp River.
Middle MethowMethow R. nr.Twisp(12.4495.00)	40.0 17-33-22E	Methow River from confluence with Twisp River to confluence with Chewack River.
Upper Methow Methow R. nr.Winthrop(12.4473.89)	50.22-34-21E	Methow River from confluence with Chewack River to confluence with Little Boulder Creek and including Little Boulder Creek.
Methow Headwaters Methow R. atLittle Boulder Cr.(12.4473.83)	65.325-36-19E	Methow River from confluence with Little Boulder Creek to headwaters.
Early Winters CreekEarly Winters Cr.near Mazama	27-36-19E	Early Winters Creek from confluence with Methow River to headwaters.
Chewack RiverChewack R. nr.Boulder Creek(12.4475.00)	8.735-36-21E	Chewack River confluence with Methow River to headwaters.
Twisp RiverTwisp R. nr.Twisp(12.4489.98)	0.37-33-22E	Twisp River from confluence with Methow River to headwaters.

(2) Base flows established for the stream management units in WAC 173-548-020(1) are as follows:

Base Flows in the Methow River

(All Figures in Cubic Feet Per Second)

[CODIFICATION NOTE: The graphic presentation of this table has been varied slightly in order that it would fall within the printing specification for the Washington Administrative Code. The following table was too wide to be accommodated in the width of the WAC column. The table as codified has been divided into two tables with Part 1 covering the Lower Methow, Middle Methow and Upper Methow and with Part 2 covering the Methow Headwaters, Early Winters Creek, Chewack River and Twisp River.]

PART 1

Month	Day	LowerMethow(12.4499.50)	MiddleMethow(12.4495.00)	UpperMethow(12.4473.89)
Jan.	1		350		260	120
	15		350		260	120
Feb.	1		350		260	120
	15		350		260	120
Mar.	1		350		260	120
	15		350		260	120
Apr.	1		590		430	199
	15		860		650	300
May	1		1,300		1,000	480
	15		1,940		1,500	690
Jun.	1		2,220		1,500	790
	15		2,220		1,500	790
Jul.	1		2,150		1,500	694
	15		800		500	240
Aug.	1		480		325	153
	15		300		220	100
Sep.	1		300		220	100
	15		300		220	100
Oct.	1		360		260	122
	15		425		320	150
Nov.	1		425		320	150
	15		425		320	150
Dec.	1		390		290	135
	15		350		260	120

PART 2

Month	Day	MethowHeadwaters(12.4473.83)	EarlyWintersCreek	ChewackRiver(12.4475.00)	TwispRiver(12.4489.98)
Jan.	1		42		10	56	34
	15		42		10	56	34
Feb.	1		42		10	56	34
	15		42		10	56	34
Mar.	1		42		10	56	34
	15		42		10	56	34
Apr.	1		64		14	90	60
	15		90		23	140	100
May	1		130		32	215	170
	15		430		108	290	300
Jun.	1		1,160		290	320	440
	15		1,160		290	320	440
Jul.	1		500		125	292	390
	15		180		45	110	130
Aug.	1		75		20	70	58
	15		32		8	47	27
Sep.	1		32		8	47	27
	15		32		8	47	27
Oct.	1		45		11	56	35
	15		60		15	68	45
Nov.	1		60		15	68	45
	15		60		15	68	45
Dec.	1		51		12	62	39
	15		42		10	56	34

(3) Base flow hydrographs, as represented in Figure 1 in the document entitled "water resources management program, Methow River basin" dated 1976, shall be used for definition of base flows on those days not specifically identified in WAC 173-548-020(2) and 173-548-030.
(4) All rights hereafter established shall be subject to the base flows established in WAC 173-548-020 (1) through (3), except as provided under WAC 173-548-030 herein.
(5) Future appropriations of water which would conflict with base flows shall be authorized, by the director, only in those situations when it is clear that overriding considerations of the public interest will be served.

[Order DE 76-37, § 173-548-020, filed 12/28/76.]