The boundaries of Sutter County are as follows:
Beginning at the northwest corner of Sacramento County, said northwest corner being at the intersection of the center line of the channel of the Sacramento River with the line dividing Section 12, Township 10 North, Range 3 East, Mount Diablo Base and Meridian into north and south halves; running thence upstream along said center line of the channel of Sacramento River, following the meanderings thereof as said channel was established by official government meander line surveys prior to 1870, of record in the Office of the United States Surveyor General for the State of California, to the intersection of said center line of the channel of Sacramento River with the center line of the channel of Butte Slough; thence northeasterly along said center line of the channel of Butte Slough to the intersection of said last named center line with the east line of Section 35, Township 16 North, Range 1 West, Mount Diablo Base and Meridian; thence northerly along said east line of Section 35 and along the extension thereof to the intersection of said east line of Section 35 extended northerly with the center line of the channel of Butte Creek; thence northwesterly and northeasterly along said center line of the channel of Butte Creek upstream following the meanderings thereof to the intersection of said center line of the channel of Butte Creek with the north line of Section 30, Township 17 North, Range 1 East, Mount Diablo Base and Meridian; thence easterly along the north lines of said Section 30, and Sections 29, 28, 27, 26, and 25, of said last named township and range, along the north lines of Sections 30, 29, 28, 27, 26, and 25, Township 17 North, Range 2 East, Mount Diablo Base and Meridian, along the north line of fractional Section 30, Township 17 North, Range 3 East, Mount Diablo Base and Meridian, and along said last named north line of fractional Section 30 produced easterly through Boga Rancho to the intersection of said last named line produced easterly with the center line of the channel of Feather River; thence southerly downstream along said center line of the channel of Feather River following the meanderings thereof, as said channel of Feather River was established by official government meander line surveys prior to 1870, of record in the Office of the United States Surveyor General for the State of California, to the intersection of said center line of the channel of Feather River with the center line of the channel of Bear River, said point of intersection being 2100.00 feet south of a monument on the boundary line between the Counties of Yuba and Sutter, said monument being south 88° 40' 32" west and distant on said course 3990.00 feet from the southwest corner of Section 32, Township 13 North, Range 4 East, Mount Diablo Base and Meridian; running thence north 2100.00 feet to said monument; thence north 12° 25' 50" east 5472.52 feet to a point which is south 89° 13' 30" west and distant on said course 2840.00 feet from the northwest corner of said Section 32; thence north 28° 05' 20" east 6041.67 feet to the northwest corner of Section 29 of said township and range; thence north 88° 40' 30" east along the north line of said Section 29, 2220.00 feet to a point which is south 88° 36' 20" west and distant on said course 2878.20 feet from the intersection of said north line of Section 29 with the center line of the Sacramento Northern Railway, formerly known as the Northern Electric Railway, as said center line of the railway is laid down and delineated upon the official plat of Bear River Garden Subdivision No. 2 of record in Book 3 of Surveys, page 22, Sutter County Records; thence north 23° 01' 36" east, 7439.33 feet to a point on said center line of the Sacramento Northern Railway, which point is north 0° 16' 30" east and distant on said course 6780.00 feet from said intersection of the center line of the railway with the north line of said Section 29; thence south 86° 03' 55" east 5334.98 feet to a point which is north 0° 06' 00" west and distant on said course 3620.00 feet from a concrete monument at the southwest corner of Lot 25 of Bear River Garden Subdivision No. 2; thence north 47° 02' 26" east 6060.57 feet; thence north 82° 44' 27" east 830.00 feet to a point which is north 0° 05' 33" west and distant on said course 2488.27 feet from a concrete monument at the southwest corner of Lot 1 of Bear River Garden Subdivision No. 3; thence north 82° 44' 27" east 3582.00 feet; thence north 10° 52' 00" east 938.34 feet; thence north 54° 20' 00" east 641.00 feet; thence north 0° 04' 00" east 971.00 feet; thence north 37° 17' 00" east 715.00 feet; thence south 42° 50' 00" east 692.00 feet; thence south 81° 50' 00" east 118.00 feet to a point which is north 0° 13' 30" west and distant on said course 2504.99 feet from the southwest corner of Section 12 of said last named township and range; thence south 81° 50' 00" east 142.03 feet; thence north 15° 52' 10" east 570.02 feet; thence north 60° 01' 10" east 245.08 feet; thence north 69° 24' 50" east 799.71 feet; thence north 70° 09' 50" east 283.24 feet; thence south 76° 42' 25" east 691.78 feet; thence south 78° 32' 50" east 493.68 feet; thence south 70° 42' 40" east 794.33 feet; thence north 80° 36' 30" east 450.13 feet; thence north 58° 30' 50" east 529.14 feet; thence north 68° 57' 10" east 993.96 feet to a point which is north 0° 03' 30" west and distant on said course 3390.71 feet from the southeast corner of said Section 12; thence north 69° 57' 40" east 774.51 feet; thence north 44° 02' 50" east 650.79 feet; thence north 60° 57' 20" east 617.99 feet; thence north 71° 37' 20" east 974.27 feet; thence north 78° 44' 50" east 925.30 feet; thence south 76° 01' 50" east 1301.54 feet to a point which is north 0° 46' 00" west and distant on said course 4763.20 feet from the southwest corner of Section 8, Township 13 North, Range 5 East, Mount Diablo Base and Meridian; thence south 76° 20' 00" east 205.00 feet; thence south 88° 35' 00" east 527.00 feet; thence south 70° 20' 00" east 251.00 feet; thence south 43° 50' 00" east 867.00 feet; thence south 35° 05' 00" east 500.00 feet; thence south 55° 20' 00" east 169.00 feet; thence south 58° 20' 00" east 428.00 feet; thence north 39° 25' 35" east 816.05 feet; thence south 70° 50' 00" east 1365.00 feet; thence north 65° 40' 00" east 435.00 feet; thence south 77° 20' 00" east 270.00 feet; thence north 72° 50' 04" east 555.45 feet to a point which is north 0° 00' 39" west and distant on said course 3646.71 feet from the southeast corner of said Section 8; thence north 73° 05' 51" east 1379.31 feet; thence north 22° 11' 28" east 231.36 feet; thence north 88° 05' 00" east 352.00 feet; thence north 73° 45' 00" east 300.00 feet; thence north 45° 10' 00" west 448.00 feet; thence north 7° 50' 00" east 101.00 feet; thence north 50° 05' 00" east 257.00 feet; thence north 77° 53' 08" east 584.63 feet; thence north 23° 20' 00" east 472.00 feet; thence north 65° 30' 00" east 190.00 feet; thence south 30° 00' 00" east 405.00 feet; thence north 54° 00' 00" east 441.00 feet; thence north 36° 45' 00" east 515.00 feet; thence north 63° 30' 00" east 438.00 feet; thence north 66° 24' 35" east 729.53 feet; thence north 40° 30' 00" east 386.00 feet; and thence south 86° 00' 00" east 217.00 feet to a point on the east line of Section 4 of said Township 13 North, Range 5 East, said point being north 0° 16' 05" west and distant on said course 1343.08 feet from the southeast corner of said Section 4, and said point being the corner common to Sutter and Placer Counties on the southerly line of Yuba County; thence southerly along the east line of said Section 4 and along the east lines of Sections 9, 16, 21, 28, and 33 of said township and range to the southeast corner of said Section 33; thence westerly along the south line of said Section 33 and along the south lines of Sections 32 and 31 of said last named township and range to the southwest corner of said Section 31; thence southerly along the range line between Township 12 North, Range 4 East and Township 12 North, Range 5 East and along the range line between Township 11 North, Range 4 East and Township 11 North, Range 5 East, Mount Diablo Base and Meridian to the southeast corner of Section 36 of said Township 11 North, Range 4 East; thence westerly along the south line of said Section 36 to the northeast corner of fractional Section 1 of Township 10 North, Range 4 East, Mount Diablo Base and Meridian; thence southerly along the east line of fractional Section 1 and along the east line of Section 12 of said last named township and range to the intersection of said east line of Section 12 with the northerly line of Sacramento County, said intersection being south 85° 15' 00" east of a point on the line dividing Section 11 of said last named township and range into north and south halves, said point being 2121.00 feet westerly measured along said half section line from the quarter section corner between said Section 11 and 12, and said northerly line of Sacramento County being a direct line drawn from said point on the line dividing Section 11 into north and south halves to the junction of the north and south forks of the American River; thence north 85° 15' 00" west to said point on the line dividing Section 11 into north and south halves; and thence westerly along said line dividing Section 11 into north and south halves, along the lines dividing Sections 10, 9, 8, and 7 of said last named township and range and along said line dividing Section 12 of Township 10 North, Range 3 East, Mount Diablo Base and Meridian into north and south halves to the point of beginning.
Ca. Gov. Code § 23151