reglab/housing_qa huggingface dataset:
WA Rev Code § 36.04.220 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.220 - Lincoln county.

RCW 36.04.220 Lincoln county.Lincoln county shall consist of the territory bounded as follows, to wit: Beginning at the point in township twenty-seven north, where the Colville Guide Meridian between ranges thirty-nine and forty east, Willamette Meridian, intersects the Spokane river, and running thence south along said meridian line to the township line between townships twenty and twenty-one north; thence west along said township line to its intersection with the Columbia Guide Meridian between ranges thirty and thirty-one east, Willamette Meridian; thence north along said meridian line to a point where it intersects the midchannel of the Columbia river; thence up said river in the middle of the channel thereof to the mouth of the Spokane river; thence up the Spokane river, in the middle of the channel thereof, to the place of beginning.[ 1883 p 89 § 1; 1883 p 95 § 1; RRS § 3946.]
WA Rev Code § 36.04.230 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.230 - Mason county.

RCW 36.04.230 Mason county.Mason county shall consist of the territory bounded as follows, to wit: Commencing in middle of the main channel of Puget Sound where it is intersected in the midchannel of Case's Inlet; thence westerly along the midchannel of Puget Sound, via Dana's Passage, into Totten's Inlet, and up said inlet to its intersection by section line between sections twenty-eight and twenty-nine, township nineteen north, range three west of the Willamette Meridian; thence south to the southwest corner of section thirty-three in township nineteen north, range three west; thence west along the township line dividing townships eighteen and nineteen, twenty miles, to the township line dividing ranges six and seven west, of the Willamette Meridian, which constitutes a part of the east boundary line of Grays Harbor county; thence north along said township line to the sixth standard parallel; thence east along said parallel line to the middle of the channel of Hood Canal; thence southerly along said midchannel to a point due west of the intersection of the shore line of said Hood Canal by the township line between townships twenty-three and twenty-four; thence east along said township line to the line dividing sections three and four in said township twenty-three north, range one west of the Willamette Meridian; thence south along said section line to the head of Case's Inlet; thence south by the midchannel of said inlet to the place of beginning.[ 1877 p 406 § 1; 1869 p 293 § 1; 1867 p 45 § 1; 1864 p 71 § 1; 1863 p 7 (local laws portion) § 1; 1861 p 56 § 1; 1861 p 30 § 1; 1860 p 458 § 1; 1854 p 474 § 1; 1854 p 470 § 1; RRS § 3947.]
WA Rev Code § 36.04.240 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.240 - Okanogan county.

RCW 36.04.240 Okanogan county.Okanogan county shall consist of the territory bounded as follows, to wit: Beginning at the intersection of the forty-ninth parallel with the range line between ranges thirty-one and thirty-two east, and from thence running in a southerly direction on said range line to the intersection of the said range line with the Columbia river, and thence down the river to the seventh standard parallel north; thence west along the seventh standard parallel north to the watershed between the waters flowing northerly and easterly into the Methow river and the waters flowing southerly and westerly into Lake Chelan; thence in a general northwesterly direction along the summit of the main divide between the waters flowing northerly and easterly into the Methow river and the waters flowing westerly and southerly into Lake Chelan and its tributaries; following the course of the center of the summit of the watershed dividing said respective waters to the point where the same intersects the east boundary of Skagit county and the summit of the Cascade mountains; thence northerly with said summit to the forty-ninth parallel, and thence on the said parallel to the place of beginning.[ 1899 c 95 § 1; 1888 p 70 § 1; RRS § 3948.]
WA Rev Code § 36.04.250 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.250 - Pacific county.

RCW 36.04.250 Pacific county.Pacific county shall consist of the territory bounded as follows, to wit: Commencing at the midchannel of the Columbia river at the point of intersection of the line between ranges eight and nine west; thence north along said line to the north boundary of township ten north; thence east along said boundary to the line between ranges five and six west; thence north along the west boundary of range five west to the northwest corner of section eighteen in township fifteen north, range five west; thence west to the west boundary of the state in the Pacific Ocean; thence southerly along said boundary, including Shoalwater Bay, to a point opposite Cape Disappointment; thence up midchannel of the Columbia river to the place of beginning.[(i) 1879 p 213 § 1; 1873 p 538 § 1; 1867 p 49 § 1; 1860 p 429 § 1; 1854 p 471 § 1; RRS § 3949. (ii) 1925 ex.s. c 40 § 1; RRS § 3963-1.]
WA Rev Code § 36.04.270 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.270 - Pierce county.

RCW 36.04.270 Pierce county.Pierce county shall consist of the territory bounded as follows, to wit: Commencing at the mouth, midchannel, of the Nisqually river; thence following the main channel of said river to its head; thence due east to the summit of the Cascade mountains; thence northerly along the summit to the head of the Green Water; thence westerly down said river to its confluence with White river; thence down the main channel of White river to the intersection of the fifth standard parallel; thence west along said line to the southeast corner of section thirty-one, township twenty-one north, range four east of Willamette Meridian; thence north along the east line of said section thirty-one to its intersection with the northerly line of the Puyallup Indian reservation; thence northwesterly on said line of the Puyallup Indian reservation, projected northwesterly in a straight line, to its intersection with the center line of Puget Sound; thence southwesterly and westerly following the channel of Dalco Passage to the south entrance of Colvo's Passage; thence down the channel of said passage to the northeast corner of section sixteen, in township twenty-two north, range two east; thence west to the northeast corner of section sixteen, in township twenty-two north, range one west; thence southerly along the channels of Case's Inlet and Puget Sound, to the middle of the mouth of the Nisqually river and place of beginning.[ 1869 p 294 § 1; 1867 p 47 § 1; 1859 p 59 § 1; 1855 p 43 § 1; RRS § 3951.]
WA Rev Code § 36.04.280 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.280 - San Juan county.

RCW 36.04.280 San Juan county.San Juan county shall consist of the territory bounded as follows, to wit: Commencing in the Gulf of Georgia at the place where the boundary line between the United States and the British possessions deflects from the forty-ninth parallel of north latitude; thence following said boundary line through the Gulf of Georgia and Haro Strait to the middle of the Strait of Fuca; thence easterly through Fuca Straits along the center of the main channel between Blunt's Island and San Juan and Lopez Islands to a point easterly from the west entrance of Deception Pass, until opposite the middle of the entrance to the Rosario Straits; thence northerly through the middle of Rosario Straits and through the Gulf of Georgia to the place of beginning.[ 1877 p 425 § 1; 1873 p 461 § 1; RRS § 3952.]
WA Rev Code § 36.04.290 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.290 - Skagit county.

RCW 36.04.290 Skagit county.Skagit county shall consist of the territory bounded as follows, to wit: Commencing at midchannel of Rosario Strait where the dividing line between townships thirty-six and thirty-seven intersects the same; thence east on said township line to the summit of the Cascade mountains; thence south along the summit of said mountain range to the eighth standard parallel; thence west along the parallel to the center of the channel or deepest channel of the nearest arm of Puget Sound and extending along said channel to the east entrance of Deception Pass; thence through said pass to the center of the channel of Rosario Strait; thence northerly along said channel to the place of beginning.[ 1883 p 97 § 1; RRS § 3953.]
WA Rev Code § 36.04.300 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.300 - Skamania county.

RCW 36.04.300 Skamania county.Skamania county shall consist of the territory bounded as follows, to wit: Commencing on the Columbia river at a point where range line four east strikes said river; thence north to the north boundary of township ten north; thence east to a point due north of the mouth of White Salmon; thence south to the township line dividing townships six and seven; thence west to the northwest corner of Klickitat county; thence south along the west boundary of said county to the Columbia river; thence along the midchannel of said river to the place of beginning.[ 1881 p 187 § 1; 1879 p 213 § 1; 1867 p 49 § 1; 1854 p 472 § 1; RRS § 3954.]
WA Rev Code § 36.04.310 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.310 - Snohomish county.

RCW 36.04.310 Snohomish county.Snohomish county shall consist of the territory bounded as follows, to wit: Commencing at the southwest corner of Skagit county; thence east along the eighth standard parallel to the summit of the Cascade mountains; thence southerly along the summit of the Cascade mountains to the northeast corner of King county, it being a point due east of the northeast corner of township twenty-six north, range four east; thence due west along the north boundary of King county to Puget Sound; thence northerly along the channel of Puget Sound and Possession Sound to the entrance of Port Susan, including Gedney Island; thence up the main channel of Port Susan to the mouth of the Stillaguamish river; thence northwesterly through the channel of the slough at the head of Camano Island, known as Davis Slough; thence northerly to the place of beginning.[ 1877 p 426 § 3; 1869 p 291 § 1; 1867 p 44 § 1; 1862 p 107 § 1; 1861 p 19 § 1; RRS § 3955.]
WA Rev Code § 36.04.320 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.320 - Spokane county.

RCW 36.04.320 Spokane county.Spokane county shall consist of the territory bounded as follows, to wit: Commencing at the northeast corner of Lincoln county; thence up the midchannel of the Spokane river to the Little Spokane river; thence north to the township line between townships twenty-nine and thirty; thence east to the boundary line between Washington and Idaho; thence south on said boundary line to the fifth standard parallel; thence west on said parallel to the Colville Guide Meridian; thence north on said meridian to the place of beginning.[1879 p 203; 1864 p 70; 1860 p 436; 1858 p 51; RRS § 3956.]
WA Rev Code § 36.04.330 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.330 - Stevens county.

RCW 36.04.330 Stevens county.Stevens county shall consist of the territory bounded as follows, to wit: Commencing at the southeast corner of township thirty north, range forty-two east of the Willamette Meridian; thence north to the northeast corner of said township; thence west to the southwest corner of section thirty-four, township thirty-one north, range forty-two east; thence north along the center line of townships thirty-one, thirty-two, thirty-three, thirty-four, thirty-five and thirty-six in said range forty-two east to the northwest corner of section three in township thirty-six north; thence west to the northwest corner of section three, township thirty-six north, range forty-one east; thence north along the center line of township thirty-seven to the northwest corner of section three in said township; thence east to the northeast corner of said township; thence north to the northwest corner of township thirty-eight, range forty-two east; thence east to the northwest corner of section three of said township; thence north along the center line of township thirty-nine to the northwest corner of section three in said township; thence east to the northeast corner of said township; thence north to the northern boundary line of the state; thence west to where said boundary line intersects the middle of the channel of the Kettle river; thence south along said channel to its confluence with the Columbia river; thence continuing south along the middle of the channel of the Columbia river to its confluence with the Spokane river; thence easterly along the channel of the Spokane to the Little Spokane river; thence north to the township line separating townships twenty-nine and thirty; thence east to the place of beginning.[(i) 1 H.C. §30; 1888 p 70; 1879 p 203; 1869 p 297; 1867 p 50; 1864 p 70; 1863 p 6; RRS § 3957. (ii) 1899 c 18 § 1; RRS § 3934.]
WA Rev Code § 36.04.340 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.340 - Thurston county.

RCW 36.04.340 Thurston county.Thurston county shall consist of the territory bounded as follows, to wit: Commencing at the southeast corner of section thirty-two in township nineteen north, range four west; thence east on the township line to the southeast corner of section thirty-two in township nineteen north, range three west; thence north to the middle of the channel of Totten's Inlet; thence along said channel to the waters of Puget Sound, intersecting the line in the channel of Puget Sound west of the southern portion of Squaxen Reservation; thence following said channel to the mouth of the Nisqually river; thence up midchannel of said river to a point where it strikes the north boundary of Lewis county; thence due west to the northwest corner of section twenty-six, township fifteen north, range four west; thence north to the southeast corner of section thirty-four in township eighteen north, range four west; thence west on the township line to the southeast corner of section thirty-two; thence north on the section line to the place of beginning.[1 H.C. §31; 1873 p 482; 1869 p 294; 1867 p 47; 1863 p 7; 1860 p 458; RRS § 3958.]
WA Rev Code § 36.04.350 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.350 - Wahkiakum county.

RCW 36.04.350 Wahkiakum county.Wahkiakum county shall consist of the territory bounded as follows, to wit: Commencing at the southeast corner of Pacific county, on the Columbia river; thence up midchannel of said river to the southwest corner of Cowlitz county; thence north to the northwest corner of Cowlitz county; thence west on the northern boundary of township ten north to the line between ranges eight and nine west; thence south to the place of beginning.[1879 p 213; 1869 p 295; 1867 p 48; 1854 p 474; RRS § 3959.]
WA Rev Code § 36.04.360 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.360 - Walla Walla county.

RCW 36.04.360 Walla Walla county.Walla Walla county shall consist of the territory bounded as follows, to wit: Commencing at a point where the boundary line between Washington and Oregon intersects the Columbia river; thence up the main channel of the Columbia to the mouth of the Snake river; thence up the main channel of said river to where the range line between ranges thirty-six and thirty-seven intersects said point; thence south on said range line to the northwest corner of township nine north, range thirty-seven east; thence east on the north boundary line of township nine north, range thirty-seven east, to the northeast corner of said township; thence south on the line between ranges thirty-seven and thirty-eight east, of the Willamette Meridian, to the northwest corner of township eight north, range thirty-eight east; thence along the north boundary line of township eight north, range thirty-eight east, to the northeast corner of said township; thence due south to the line dividing the state of Washington from the state of Oregon; thence due west on said dividing line to the place of beginning.[(i) 1 H.C. §33; 1879 p 226; 1875 p 133; 1869 p 397; 1868 p 60; 1867 p 50; 1858 p 51; 1854 p 472; RRS § 3960. (ii) 1879 p 226; RRS § 3960-1.]
WA Rev Code § 36.04.370 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.370 - Whatcom county.

RCW 36.04.370 Whatcom county.Whatcom county shall consist of the territory bounded as follows, to wit: Commencing on the forty-ninth parallel at the point dividing the American and British possessions in the Gulf of Georgia; thence along said boundary line to where it deflects at the north entrance to the Haro Strait; thence along the northeasterly boundary of San Juan county to the ninth standard parallel, or the northwest corner of Skagit county; thence due east along said parallel to the summit of the Cascade mountains; thence northerly along the summit of said mountains to the forty-ninth parallel of north latitude; thence west along said parallel to the place of beginning.[1 H.C. §34; 1877 p 426; 1869 p 291; 1867 p 44; 1859 p 60; 1854 p 475; RRS § 3961.]
WA Rev Code § 36.04.380 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.380 - Whitman county.

RCW 36.04.380 Whitman county.Whitman county shall consist of the territory bounded as follows, to wit: Commencing at a point where the range line between ranges thirty-eight and thirty-nine east intersects the fifth standard parallel, being the northeast corner of Adams county; thence east on said parallel to the boundary line between Idaho and Washington; thence south on said boundary line to the midchannel of the Snake river; thence down the midchannel of the Snake river to its intersection with the midchannel of the Palouse river; thence north along the midchannel of the Palouse river to the point where the same intersects the range line between ranges thirty-eight and thirty-nine east; thence north along said range line to the place of beginning.[(i) 1 H.C. §35; 1875 p 189; 1871 p 134; RRS § 3962. (ii) 1883 p 87; RRS § 3935. (iii) 1883 p 93; RRS § 3924.]
WA Rev Code § 36.04.390 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.390 - Yakima county.

RCW 36.04.390 Yakima county.Yakima county shall consist of the territory bounded as follows, to wit: Commencing at the northwest corner of township six north of range twelve east; thence east along the north boundary of township six north until said line intersects the range line between range twenty-three east and range twenty-four east; thence north along said range line to the Columbia river; thence north up the midchannel of said river to the southeast corner of Kittitas county; thence along the southern boundary of Kittitas county to the summit of the Cascade mountains; thence southerly to the southeast corner of Lewis county; thence west along the line of said county to the northeast corner of Skamania county; thence along the east line of Skamania county to the line between townships six and seven north; thence east along said line to the place of beginning.[ 1905 c 89 § 1; 1886 p 168; 1873 p 571; 1869 p 296; 1868 p 60; 1867 p 50; RRS § 3963.]
WA Rev Code § 36.04.400 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.04 - County Boundaries.|36.04.400 - Survey of county boundaries.

RCW 36.04.400 Survey of county boundaries.All common boundaries and common corners of counties not adequately marked by natural objects or lines, or by surveys lawfully made, must be definitely established by surveys jointly made by all the counties affected thereby, and approved by the board of county commissioners of such counties. The cost of making such surveys shall be apportioned equally among the counties interested, and the board of county commissioners shall audit the same, and the amounts shall be paid out of the county current expense fund.[Code 1881 § 2661; RRS § 3990.]
WA Rev Code § 36.05.010 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.05 - Actions to Establish Boundaries.|36.05.010 - Suit in equity authorized—Grounds.

RCW 36.05.010 Suit in equity authorized—Grounds.Whenever the boundary line between two or more adjoining counties in this state are in dispute, or have been lost by time, accident or any other cause, or have become obscure or uncertain, one or more of the counties, in its corporate name, may bring and maintain suit against such other adjoining county or counties, in equity, in the superior court, to establish the location of the boundary line or lines.[ 1963 c 4 § 36.05.010. Prior: 1897 c 76 § 1; RRS § 3964.]
WA Rev Code § 36.05.020 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.05 - Actions to Establish Boundaries.|36.05.020 - Noninterested judge to sit.

RCW 36.05.020 Noninterested judge to sit.A suit to establish county boundary lines shall be tried before a judge of the superior court who is not a resident of a county which is a party to such suit, or of a judicial district embracing any such county.[ 1963 c 4 § 36.05.020. Prior: 1897 c 76 § 2; RRS § 3965.]
WA Rev Code § 36.05.030 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.05 - Actions to Establish Boundaries.|36.05.030 - Residents of area may intervene.

RCW 36.05.030 Residents of area may intervene.A majority of the voters living in the territory embracing such disputed, lost, obscure, or uncertain boundary line may, by petition, duly verified by one or more of them, intervene in the suit, and thereupon the court shall have jurisdiction and power, in locating and establishing the boundary line or lines, to strike or transfer from one county to another a strip or portion of such territory not exceeding two miles in width.[ 1963 c 4 § 36.05.030. Prior: 1897 c 76 § 3; RRS § 3966.]
WA Rev Code § 36.05.040 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.05 - Actions to Establish Boundaries.|36.05.040 - Questions of fact to be determined.

RCW 36.05.040 Questions of fact to be determined.The boundaries of such territory, the number of voters living therein, and the sufficiency of such petition are questions of fact to be determined by the court.[ 1963 c 4 § 36.05.040. Prior: 1897 c 76 § 5; RRS § 3968.]
WA Rev Code § 36.05.050 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.05 - Actions to Establish Boundaries.|36.05.050 - Court may establish boundary line.

RCW 36.05.050 Court may establish boundary line.The court shall have power to move or establish such boundary line on any government section line or subdivisional line thereof, of the section in or through which said disputed, lost, obscure or uncertain boundary line may be located, or if such boundary line is in unsurveyed territory, then the court shall have power to move or establish such boundary line so it will conform to extensions of government section lines already surveyed in that vicinity.[ 1963 c 4 § 36.05.050. Prior: 1897 c 76 § 6; RRS § 3969.]
WA Rev Code § 36.05.060 (2021)
2021 Revised Code of Washington|Title 36 - Counties|Chapter 36.05 - Actions to Establish Boundaries.|36.05.060 - Practice in civil actions to prevail.

RCW 36.05.060 Practice in civil actions to prevail.The practice, procedure, rules of evidence, and appeals to the supreme court or the court of appeals applicable to civil actions, are preserved under this chapter.[ 1971 c 81 § 96; 1963 c 4 § 36.05.060. Prior: 1897 c 76 § 7; RRS § 3970.]