Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-563 - Instream resources protection program for the main stem Columbia River in Washington state
Section 173-563-056 - Application of minimum average weekly flows to out-of-stream uses
Universal Citation: WA Admin Code 173-563-056
Current through Register Vol. 24-06, March 15, 2024
(1) For the first 4,500 cfs of water rights issued subject to this program, the following conditions shall apply:
(a) When the March 1
forecast of April-September runoff at The Dalles, Oregon (as published by the
National Weather Service in Water Supply Outlook for the Western United States)
is equal to or greater than 88 million acre-feet (MAF), no regulation of
out-of-stream diverters shall occur, regardless of the gaged flow of the
Columbia River.
(b) When the flow
forecast is less than 88 MAF but greater than 60 MAF, the department shall
encourage voluntary water conservation through appropriate notification of
water users in an attempt to foster efficient resource use.
(c) When the flow forecast is 60 MAF or less,
the department shall regulate out-of-stream diverters on the basis of
first-in-time is first-in-right whenever it is predicted that gaged flows will
fall below the minimum average weekly flows as established by this
chapter.
(2) For any water allocations issued in excess of the first 4,500 cfs defined in WAC 173-563-056(1), the following conditions shall apply:
(a)
When the March 1 forecast of April-September runoff at The Dalles, Oregon (as
published by the National Weather Service in Water Supply Outlook for the
Western United States) is equal to or greater than 88 million acre-feet (MAF),
no regulation of out-of-stream diverters shall occur, regardless of the gaged
flow of the Columbia River.
(b)
When the flow forecast is less than 88 MAF, the department shall regulate
out-of-stream diverters on the basis of first-in-time is first-in-right
whenever it is predicted that gaged flows will fall below the CRIRPP minimum
average weekly flows as established by this chapter.
(3) The department shall utilize the Bonneville Power Administration (BPA) 30-day power operation plan in predicting specific periods of anticipated flow conditions.
Statutory Authority: RCW 90.54.040, 90.54.050, chapters 90.03 and 90.22 RCW. 82-21-001 and 82-21-007 (Orders DE 82-35 and DE 82-35A), § 173-563-056, filed 10/7/82 and 10/8/82.
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