Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-548 - Water resources program in the Methow River basin, WRIA-48
Section 173-548-030 - Future allocations - Reservation of surface water for beneficial uses

Universal Citation: WA Admin Code 173-548-030

Current through Register Vol. 24-06, March 15, 2024

(1) The department determines that there are surface waters available for appropriation from the stream management units specified in the amount specified in cubic feet per second (cfs) during the time specified as follows:

(a) Maximum surface water available for future allocation from the indicated reach is as follows:

Month

Lower Methow

Middle Methow

Upper Methow

Methow

Head-

waters

Early Winters Creek

Chewack River

Twisp River

Oct.

95

50

44

15

29

09

14

Nov.

116

101

46

06

21

10

15

Dec.

112

99

44

17

26

10

15

Jan.

50

36

26

08

19

03

09

Feb.

51

37

29

09

19

04

10

Mar.

147

139

80

38

19

24

18

Apr.

565

590

273

336

35

118

148

May

2,922

2,927

784

412

403

809

703

Jun.

3,116

2,853

1,017

1,249

294

1,292

890

Jul.

965

877

583

608

189

308

298

Aug.

214

192

203

109

94

70

70

Sep.

62

55

76

33

47

23

26

All figures in cubic feet per second.

(b) The control station for each reach is defined in WAC 173-548-020.

(c) The appropriation limit is set forth to be an amount equal to the one in two year natural reach discharge on a monthly basis for all management reaches except Early Winters Creek. The appropriation limit for Early Winters Creek is set forth to be an amount equal to the estimated natural mean monthly streamflow for that stream.

(2) The amounts of water referred to in WAC 173-548-030(1) above are allocated for beneficial uses in the future as follows:

(a) Allocation of surface waters by use category (April through September):

Use Description

Apr.

May

Jun.

Jul.

Aug.

Sep.

Lower Methow

Single Domestic

and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

860

1,940

2,220

800

300

300

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Middle Methow

Single Domestic and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

650

1,500

1,500

500

220

220

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Upper Methow

Single Domestic and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

300

690

790

240

100

100

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Methow Headwaters

Single Domestic and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

90

430

1,160

180

32

32

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Early Winters Creek

Single Domestic and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

23

108

290

45

8.0

11.0

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Chewack River

Single Domestic and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

140

290

320

110

47

47

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Twisp River

Single Domestic and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

100

300

440

130

27

27

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

All figures in cubic feet per second

(b) Allocation of surface waters by use category (October through March):

Use Description

Oct.

Nov.

Dec.

Jan.

Feb.

Mar.

Lower Methow

Single Domestic and

Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

425

425

350

350

350

350

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Middle Methow

Single Domestic and

Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

320

320

260

260

260

260

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Upper Methow

Single Domestic and

Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

150

150

120

120

120

120

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Methow Headwaters

Single Domestic and

Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

60

60

42

42

42

42

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Early Winters Creek

Single Domestic and

Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

15

15

10

10

10

10

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Chewack River

Single Domestic and

Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

68

68

56

56

56

56

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

Twisp River

Single Domestic

and Stock Use

2.0

2.0

2.0

2.0

2.0

2.0

Base Flow

45

45

34

34

34

34

Public Water Supply,

Irrigation, and

Other Uses

Remaining waters up to the

appropriation limit set forth in

WAC 173-548-030(1)(c)

All figures in cubic feet per second.

(c) Allocations presented in this section do not limit the utilization of waters stored for later release, provided such storage does not infringe upon existing rights or base flow and is duly permitted under RCW 90.03.290 and 90.03.350.

(d) As the amount of water allocated for each category of use approaches the amount available for future allocation set forth in WAC 173-548-030(1), the department shall review the program to determine whether there is a need for program revision.

Order DE 76-37, § 173-548-030, filed 12/28/76.

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