Wash. Rev. Code » Title 86 · Chapter 86.16
Revised Code of Washington

Wash. Rev. Code § 86.16.020 (2026)

Floodplain management regulation

✓ current as of May 2026
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Statewide floodplain management regulation shall be exercised through: (1) Local governments' administration of the national flood insurance program regulation requirements, (2) the establishment of minimum state requirements for floodplain management that equal the minimum federal requirements for the national flood insurance program, and (3) the issuance of regulatory orders. This regulation shall be exercised over the planning, construction, operation and maintenance of any works, structures and improvements, private or public, which might, if improperly planned, constructed, operated and maintained, adversely influence the regimen of a stream or body of water or might adversely affect the security of life, health and property against damage by flood water.
[ 1989 c 64 s 1; 1987 c 523 s 2; 1935 c 159 s 3; RRS s 9663A-3. FORMER PART OF SECTION: 1939 c 85 s 1 now codified as RCW 86.16.025 and 86.16.027.]
Notes of Decisions
Cited in 3 cases, 1977–2015 · leading case: Maple Leaf Investors, Inc. v. Dep't of Ecology, 565 P.2d 1162 (Wash. 1977).
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Maple Leaf Investors, Inc. v. Dep't of Ecology, 565 P.2d 1162 (Wash. 1977). · cites it 2× “RCW 86.16.020 provides the state regulatory control shall be exercised over planning and construction of structures "which might, if improperly planned, constructed, operated and maintained, adversely influence the regimen of a stream .”
Klineburger v. King Cnty., 356 P.3d 223 (Wash. Ct. App. 2015). “110(l)(b) (PCHB has jurisdiction over appeals of orders issued under RCW 86.16.020). RCW 43.21B.230. RCW 43.21B.”
King Co Dept Of Dev. & Environ. Ser. Bldg, App-cross Res v. Stephan & Sandra Klineburger, Res-cr App (Wash. Ct. App. 2015). “110 (1)(b) (PCHB has jurisdiction over appeals of orders issued under RCW 86.16.020)). 22 RCW 43.21 B.230. 23RCW43.”
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