173-511-020  <<  173-511-030 >>   173-511-040

WAC 173-511-030

Establishment of instream flows.

(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. WSR 81-04-028 (Order DE 80-42), § 173-511-030, filed 2/2/81.]
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