31 (1) In this Part,  “sectional township with double fronts” means a township divided into sections and lots where the usual practice in the original survey was to survey the township boundaries, concession lines and side lines of sections defining section boundaries and to establish the front corners of the lots and the section corners. Re-establishment of lost corners, etc. (2) A surveyor in re-establishing a lost corner or obliterated boundary in a sectional township with double fronts shall obtain the best evidence available respecting the corner or boundary, but if the corner or boundary cannot be re-established in its original position from such evidence, the surveyor shall proceed as follows: 1.  If the lost corner is a corner of the township, the surveyor shall report the circumstances to the Minister who shall instruct the surveyor how to proceed. 2.  If the lost corner is a corner of a section on a township boundary, the surveyor shall determine the distance between the two nearest undisputed corners, one being on either side of the lost corner, and the surveyor shall re-establish the corner by dividing the distance proportionately as intended in the original survey having due regard for any road allowance made in the original survey. 3.  If the lost corner is a corner of a section and the concession line in front of the adjacent sections on either side of the lost corner is shown on the original plan and field notes as a straight line and the side lines between such sections and adjacent sections on the opposite side of the concession line are shown on the original plan and field notes as a straight line and the adjacent corners of the sections are lost, the surveyor shall re-establish the corner by intersecting a straight line joining the nearest ascertainable points on the concession line with a straight line joining the nearest ascertainable points on the side line of the section on opposite sides of the concession line, but where such ascertainable points on the side line of the sections are more than 400 metres apart, the surveyor shall determine the distance between the two nearest undisputed corners on the concession line, one being on either side of the lost corner, and the surveyor shall re-establish the corner by dividing the distance proportionately as intended in the original survey having due regard for any road allowance made in the original survey and by joining with a straight line the nearest ascertainable points on the concession line. 4.  If the lost corner is a corner of a section and the concession line in front of the adjacent sections on either side of the lost corner is shown on the original plan and field notes as a straight line and the side lines between such sections and adjacent sections on the opposite side of the concession line are shown on the original plan and field notes not as a straight line and the adjacent corners of the sections are lost, the surveyor shall determine the distance between the two nearest undisputed corners on the concession line, one being on either side of the lost corner, and the surveyor shall re-establish the corner by dividing the distance proportionately as intended in the original survey having due regard for any road allowance made in the original survey and by joining with a straight line the nearest ascertainable points on the concession line. 5.  If the lost corner is a corner of a section and the concession line in front of the adjacent sections on either side of the lost corner is shown on the original plan and field notes as not on a straight line and the side lines between such sections and adjacent sections on the opposite side of the concession line are shown on the original plan and field notes as a straight line and the adjacent corners of the sections are lost, the surveyor shall determine the distance between the two nearest undisputed corners on the side lines of the sections, one being on either side of the lost corner, and the surveyor shall re-establish the corner by dividing the distance proportionately as intended in the original survey having due regard for any road allowance made in the original survey and by joining with a straight line the nearest ascertainable points on the side line of the section on opposite sides of the concession line. 6.  If the lost corner is the corner of a section and the concession line in front of the adjacent sections on either side of the lost corner is shown on the original plan and field notes as not in a straight line, and the side lines between such sections and adjacent sections on the opposite sides of the concession line are shown on the original plan and field notes as not in a straight line and the section corners of the adjacent sections on the concession line are lost, the surveyor shall report the circumstances to the Minister who shall instruct the surveyor how to proceed. 7.  If the lost corner is a corner of a lot in a section on a front of a concession, the surveyor shall determine the distance between the two nearest undisputed corners in the section, one being on either side of the lost corner, and the surveyor shall re-establish the corner by dividing the distance proportionately as intended in the original survey having due regard for any road allowance made in the original survey, but where there is an undisputed corner on the other side of the road allowance, opposite the lost corner, the surveyor shall re-establish the lost corner from the position of the undisputed corner, and where the corner on the opposite side of the road allowance is also lost but the position of the original post on the centre line of the road allowance can be determined, such position shall be used in re-establishing the lost corner. 8.  If a part of a township boundary is obliterated, the surveyor shall re-establish it by joining the nearest ascertainable points thereof as intended in the original survey. 9.  If part of a concession line or side line of a section surveyed in the original survey is obliterated between the corners of a section, the surveyor shall re-establish it by joining the nearest ascertainable points thereof as intended in the original survey. 10.  If a concession line is obliterated beyond the last side line of a section in a concession broken by a lake or river at its end, the surveyor shall re-establish it on the astronomic course shown on the original plan and field notes from the nearest ascertainable point on the concession line in that section. 11.  If in a concession wholly or partly broken by a lake or river on its front a side line of a section is obliterated and it was not surveyed across the lake or river, the surveyor shall re-establish it on the astronomic course shown on the original plan and field notes from the nearest ascertainable point thereof. Application (3) Paragraphs 3 to 6 of subsection (2) do not apply to any corner of a section re-established before the 24th day of March, 1911.  R.S.O. 1990, c. S.30, s. 31.