Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-511 - Instream resources protection program - Nisqually River basin, water resource inventory area (WRIA) 11
Section 173-511-030 - Establishment of instream flows
Current through Register Vol. 24-06, March 15, 2024
(1) Stream management units and associated control stations are established as follows:
STREAM MANAGEMENT UNIT INFORMATION
|
Control Station No. Stream Management Unit Name |
Control Station Location, River Mile and Section, Township and Range |
Affected Stream Reach |
|
New gage Nisqually River |
4.3 9, 18N, 1E |
From influence of mean annual high tide at low base flow levels to the outlet of the Centralia City Light Power Plant. |
|
12-0895-00 Nisqually River |
21.8 28, 17N, 2E |
From outlet of the Centralia City Light Power Plant at river mile 12.6 to Centralia City Light Power canal diversion at river mile 26.2, including all tributaries. |
|
12-0884-00 Nisqually River |
32.6 21, 16N, 3E |
From the Centralia City Light Power canal diversion at river mile 26.2 to gage 12-0865-00 near the La Grande Power Plant, including all tributaries except the Mashel River. |
|
12-0825-00 Nisqually River |
57.8 29, 15N, 6E |
From gage 12-0865-00 near the La Grande Power Plant to the headwaters including all tributaries. |
|
12-0870.00 Mashel River |
3.25 11, 16N, 4E |
From mouth upstream to the headwaters including all tributaries. |
(2) Instream flows established for the stream management unit described in WAC 173-511-030(1) are as follows:
INSTREAM FLOWS IN THE NISQUALLY RIVER BASIN
(in Cubic Feet per Second)
|
Month |
Day |
Lower Reach of the Nisqually River USGS Gage 12-* RM 4.3 RM 4.3 |
Bypass Reach of the Nisqually River USGS Gage 12-0895-00 RM 21.8 |
Mid Reach of the Nisqually River USGS Gage 12-0884-00 RM 32.6- |
|
January |
1 |
900 |
600 |
900 |
|
15 |
900 |
600 |
900 |
|
|
February |
1 |
900 |
600 |
900 |
|
15 |
900 |
600 |
900 |
|
|
March |
1 |
900 |
600 |
900 |
|
15 |
900 |
600 |
900 |
|
|
April |
1 |
900 |
600 |
900 |
|
15 |
900 |
600 |
900 |
|
|
May |
1 |
900 |
600 |
900 |
|
15 |
900 |
600 |
900 |
|
|
June |
1 |
900 |
500(closed) |
800(closed) |
|
15 |
850 |
450(closed) |
800(closed) |
|
|
July |
1 |
800 |
400(closed) |
800(closed) |
|
15 |
800 |
400(closed) |
800(closed) |
|
|
August |
1 |
800 |
370(closed) |
800(closed) |
|
15 |
800 |
370(closed) |
650(closed) |
|
|
September |
1 |
600 |
370(closed) |
600(closed) |
|
15 |
600 |
370(closed) |
600(closed) |
|
|
October |
1 |
700 |
550(closed) |
700(closed) |
|
15 |
700 |
550(closed) |
700(closed) |
|
|
November |
1 |
700 |
600 |
700 |
|
15 |
700 |
600 |
700 |
|
|
December |
1 |
800 |
600 |
800 |
|
15 |
900 |
600 |
900 |
|
*New gage to be established. |
|
Month |
Day |
Upper Reach of the Nisqually River USGS Gage 12-0825-00 RM 57.8 |
Mashel River USGS Gage 12-0870-00 RM 3.25 |
|
January |
1 |
450 |
100 |
|
15 |
450 |
100 |
|
|
February |
1 |
450 |
100 |
|
15 |
450 |
100 |
|
|
March |
1 |
450 |
100 |
|
15 |
450 |
100 |
|
|
April |
1 |
450 |
100 |
|
15 |
450 |
100 |
|
|
May |
1 |
450 |
100 |
|
15 |
450 |
80 |
|
|
June |
1 |
600 |
80(closed) |
|
15 |
650 |
70(closed) |
|
|
July |
1 |
550 |
50(closed) |
|
15 |
500 |
40(closed) |
|
|
August |
1 |
450 |
30(closed) |
|
15 |
400 |
30(closed) |
|
|
September |
1 |
350 |
20(closed) |
|
15 |
300 |
20(closed) |
|
|
October |
1 |
300 |
20(closed) |
|
15 |
300 |
20(closed) |
|
|
November |
1 |
350 |
40 |
|
15 |
400 |
70 |
|
|
December |
1 |
450 |
100 |
|
15 |
450 |
100 |
(3) Instream flow hydrographs, as represented in the document entitled "Nisqually River basin instream resource protection program," shall be used for identification of instream flows on those days not specifically identified in WAC 173-511-030(2).
Statutory Authority: Chapters 90.22 and 90.54 RCW. 81-04-028 (Order DE 80-42), § 173-511-030, filed 2/2/81.
