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Ontario County High Points

RankCountyPeak Elev-M Range (Level 4)Ascent Date
1.Sudbury DistrictIshpatina Ridge693Northern Ontario 
2.Thunder BayTower Mountain679Northern Ontario 
3.TimiskamingIshpatina Ridge North677Northern Ontario 
4.AlgomaOgidaki Mountain665Northern Ontario 
5.NipissingSouthern Ontario High Point578Southern Ontario 
6.HaliburtonManitou Mountain563Southern Ontario 
7.KenoraKenora District High Point559Northern Ontario 
8.GreyGrey County High Point544Southern Ontario 
8.SimcoeNiagara Escarpment High Point544Southern Ontario 
8.Rainy RiverRainy River District High Point544Northern Ontario 
11.DufferinDufferin County High Point542Southern Ontario 
11.HastingsHastings County High Point542Southern Ontario 
11.MuskokaMuskoka High Point542Southern Ontario 
14.Parry SoundParry Sound High Point532Southern Ontario 
15.RenfrewRyans Mountain523Southern Ontario 
16.WellingtonLuther Benchmark511Southern Ontario 
17.Sudbury CityWolf Lake Mountain504Northern Ontario 
18.Lennox and AddingtonMoger Pond Peak501Southern Ontario 
19.PeelPeel High Point494Southern Ontario 
20.CochraneGhost Range Peak488Northern Ontario 
21.WaterlooWaterloo High Point438Southern Ontario 
22.PeterboroughPeterborough County High Point434Southern Ontario 
23.PerthPerth County High Point427Southern Ontario 
24.FrontenacEvergreen Mountain417Southern Ontario 
25.HaltonHalton High Point414Southern Ontario 
26.DurhamDurham High Point410Southern Ontario 
27.BruceBruce County High Point403Southern Ontario 
28.HuronHuron County High Point397Southern Ontario 
28.Kawartha LakesKawartha Lakes High Point397Southern Ontario 
30.OxfordOxford County High Point391Southern Ontario 
31.LanarkWhite Mountain386Southern Ontario 
32.YorkYork High Point379Southern Ontario 
33.NorthumberlandNorthumberland County High Point356Southern Ontario 
34.ManitoulinCup and Saucer352Southern Ontario 
35.MiddlesexMiddlesex County High Point342Southern Ontario 
36.BrantBrant County High Point327Southern Ontario 
37.HamiltonHamilton High Point324Southern Ontario 
38.ElginElgin County High Point296Southern Ontario 
39.NorfolkNorfolk County High Point278Southern Ontario 
40.BrantfordBrantford High Point267Southern Ontario 
41.LambtonLambton County High Point264Southern Ontario 
42.NiagaraNiagara High Point259Southern Ontario 
43.Chatham-KentChatham-Kent High Point233Southern Ontario 
43.EssexEssex County High Point233Southern Ontario 
45.HaldimandHaldimand County High Point231Southern Ontario 
46.Leeds and GrenvilleLeeds and Grenville High Point212Southern Ontario 
46.TorontoToronto High Point212Southern Ontario 
48.OttawaOttawa High Point166Southern Ontario 
49.Prince EdwardEast Picton Bay Hill155Southern Ontario 
50.Stormont, Dundas and GlengarryStormont-Dundas-Glengarry High Point125Southern Ontario 
51.Prescott and RussellVankleek Hill123Southern Ontario 

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List Description

Ontario is administratively divided into 51 units that are a mixture of counties, unified counties, regional municipalities, districts, cities, and municipalities. Most of them were historically counties at one point, and despite changes in name or status, the boundaries have remained mostly stable over the years.

These units also correspond to the Canadian Census Divisions for the most part. Since the last revision of Census Divisions in 2001, the combined county of Haldimand-Norfolk split into Haldimand County and Norfolk County, and the City of Brantford separated from Brant County. That is why there are 51 entiries on this list, while the Census lists only 49 Divisions.

Sources

The main source for the Ontario county high point list was the excellent Ontario Basic Mapping database system created by the provincial government, which is a huge improvement over the old NTS 1:50,000 map sheets. To help generate this list, all the spot elevations (over 500,000 of them) in the OBM data were downloaded, matched to their county by a point-in-polygon operation, and the highest spot elevations picked out. Sometimes there was a swarm of spot elevations of the same height in the same general location, and one represenative point was picked. In other cases, separate areas were logged (see, for example, Chatham-Kent). Also, some OBM spot elevations were clearly erroneous outliers and had to be discarded. In general, though, a 1-meter difference in spot elevations was considered significant, and these lower points were not considered high-point candidates.

Once a set of county high points was generated, they were cross-checked with the 1:50,000 NTS maps, and some were adjusted a little bit based on information there. The result should be a reasonably accurate guide to the highest ground in the counties. Before tackling any county, though, be sure to check the OBM and NTS maps yourself to familiarlize yourself with the area. You may have to check out several nearby areas to be sure of locating the highest piece of earth, an occupational hazard of highpointers in relatively flat terrain like Ontario.

Links

     Ontario Basic Mapping

 


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