(1) Watershed planning developed and approved under this chapter shall not contain provisions that: (a) Are in conflict with existing state statutes, federal laws, or tribal treaty rights; (b) impair or diminish in any manner an existing water right evidenced by a claim filed in the water rights claims registry established under chapter 90.14 RCW or a water right certificate or permit; (c) require a modification in the basic operations of a federal reclamation project with a water right the priority date of which is before June 11, 1998, or alter in any manner whatsoever the quantity of water available under the water right for the reclamation project, whether the project has or has not been completed before June 11, 1998; (d) affect or interfere with an ongoing general adjudication of water rights; (e) modify or require the modification of any waste discharge permit issued under chapter 90.48 RCW; (f) modify or require the modification of activities or actions taken or intended to be taken under a habitat restoration work schedule developed under chapter 246, Laws of 1998; or (g) modify or require the modification of activities or actions taken to protect or enhance fish habitat if the activities or actions are: (i) Part of an approved habitat conservation plan and an incidental take permit, an incidental take statement, a management or recovery plan, or other cooperative or conservation agreement entered into with a federal or state fish and wildlife protection agency under its statutory authority for fish and wildlife protection that addresses the affected habitat; or (ii) part of a water quality program adopted by an irrigation district under chapter 87.03 RCW or a board of joint control under chapter 87.80 RCW. This subsection (1)(g) applies as long as the activities or actions continue to be taken in accordance with the plan, agreement, permit, or statement. Any assessment conducted under RCW 90.82.070, 90.82.090, or 90.82.100 shall take into consideration such activities and actions and those taken under the forest practices rules, including watershed analysis adopted under the forest practices act, chapter 76.09 RCW.

(2) Watershed planning developed and approved under this chapter shall not change existing local ordinances or existing state rules or permits, but may contain recommendations for changing such ordinances or rules.

(3) Notwithstanding any other provision of this chapter, watershed planning shall take into account forest practices rules under the forest practices act, chapter 76.09 RCW, and shall not create any obligations or restrictions on forest practices additional to or inconsistent with the forest practices act and its implementing rules, whether watershed planning is approved by the counties or the department.