18-Geom-B5 Survey Law · May 2016
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — May 2016 — 04-Geom-B5 Survey Law. Three hours; CLOSED BOOK, NO CALCULATOR. NINE (9) questions constitute a complete paper; most answers require sentence-and-paragraph format, and clarity and organization are marked. All nine questions (including every lettered sub-part) are solved in full below. Content is framed in the Canadian common-law and Ontario land-registration context named by the source (Surveyor General's Instructions, the Ontario township survey systems, Registry/Land Titles, the Expropriations Act).
Reference texts: Survey Law in Canada (Canadian Council of Land Surveyors / Carswell, 1989); Brown, Robillard & Wilson, Brown's Boundary Control and Legal Principles (7th ed., Wiley, 2017); Association of Ontario Land Surveyors (AOLS) Survey Review and educational materials; the Surveys Act, R.S.O. 1990, c. S.30, the Registry Act, R.S.O. 1990, c. R.20, the Land Titles Act, R.S.O. 1990, c. L.5, the Boundaries Act, R.S.O. 1990, c. B.10, and the Expropriations Act, R.S.O. 1990, c. E.26.
Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.
A parcel is riparian (or, on a lake or the sea, littoral) when the water itself is a boundary of the parcel, so that the owner holds up to the water and enjoys riparian rights; it is non-riparian when something lies between the parcel and the water so that the lot does not legally touch it. The determining factors are:
1. Whether an intervening strip exists. The single most decisive factor is whether an original shore road allowance, a Crown reservation, a reserved strip, or a public road runs between the lot and the water. In the original Ontario surveys a one-chain (66 ft) shore road allowance was commonly laid out along navigable waters; where it survives unclosed, the abutting lot is non-riparian because the allowance, not the lot, meets the water.
2. The words of the original grant/description. Does the description call the water (or its high-water mark) as the boundary, or does it call a fixed inland line or the limit of an allowance? A call "to the water's edge" indicates a riparian boundary; a call to the limit of a road allowance does not.
3. Navigability and Crown ownership of the bed. For navigable waters the Crown owns the bed to the high-water mark; the private boundary can be no lower than the HWM. For non-navigable streams the abutting owner may hold to the medium filum (centre thread).
4. Whether the water is natural. Riparian doctrine attaches to natural watercourses and bodies; artificial channels are treated differently.
If the parcel is riparian, its water boundary is ambulatory — it moves with the water's edge. Where soil is added gradually and imperceptibly (accretion, or reliction where water permanently recedes) the boundary follows the new margin and the owner gains land; where the bank is worn away gradually (erosion) the boundary retreats and the owner loses land. Only a sudden and perceptible change (avulsion — a river cutting a new channel in a flood) leaves the boundary fixed at the former location. Because the margin moves, the parcel's area is inherently uncertain and the description reads "to the water's edge… more or less." On a non-navigable stream the riparian owner may run to the medium filum; on navigable water the boundary is the ambulatory high-water mark, with the Crown owning the bed below it. The owner also enjoys riparian rights of access to and from the water and to the natural flow.
If the parcel is non-riparian, its water-side limit is the fixed inland line — typically the limit of the intervening shore road allowance or reservation. That boundary does not move with the water: accretion and erosion accrue to the strip (and thus to its owner, often the Crown or municipality), not to the lot. The parcel's area is certain, it has no riparian rights, and it has no direct legal access to the water except across the intervening strip. Thus the riparian/non-riparian classification decides whether the water boundary is ambulatory or fixed, whether the area is uncertain or certain, and whether the owner enjoys the benefits and bears the risks of the moving margin.
