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 173-548-020 - Establishment of base flows
Current through Register Vol. 24-06, March 15, 2024
(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 Methow Methow R. nr. Pateros (12.4499.50) |
6.7 20-30-23E |
Methow River confluence with Wells Pool to confluence with Twisp River. |
||
|
Middle Methow Methow 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) |
50.2 2-34-21E |
Methow River from confluence with Chewack River to confluence with Little Boulder Creek and including Little Boulder Creek. |
||
|
Methow Headwaters Methow R. at Little Boulder Cr. (12.4473.83) |
65.3 25-36-19E |
Methow River from confluence with Little Boulder Creek to headwaters. |
||
|
Early Winters Creek Early Winters Cr. near Mazama |
27-36-19E |
Early Winters Creek from confluence with Methow River to headwaters. |
||
|
Chewack River Chewack R. nr. Boulder Creek (12.4475.00) |
8.7 35-36-21E |
Chewack River confluence with Methow River to headwaters. |
||
|
Twisp River Twisp R. nr. Twisp (12.4489.98) |
0.3 7-33-22E |
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 |
Lower Methow (12.4499.50) |
Middle Methow (12.4495.00) |
Upper Methow (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 |
Methow Headwaters (12.4473.83) |
Early Winters Creek |
Chewack River (12.4475.00) |
Twisp River (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.
