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Ontario County High Points

RankCountyPeak Elev-M Range (Level 4)Ascents
1.Sudbury DistrictIshpatina Ridge693Northern Ontario54
2.Thunder BayTower Mountain679Northern Ontario8
3.TimiskamingIshpatina Ridge North677Northern Ontario7
4.AlgomaOgidaki Mountain665Northern Ontario6
5.NipissingSouthern Ontario High Point578Southern Ontario9
6.HaliburtonManitou Mountain563Southern Ontario8
7.KenoraKenora District High Point559Northern Ontario4
8.GreyGrey County High Point544Southern Ontario14
8.SimcoeNiagara Escarpment High Point544Southern Ontario14
8.Rainy RiverRainy River District High Point544Northern Ontario2
11.DufferinDufferin County High Point542Southern Ontario13
11.HastingsHastings County High Point542Southern Ontario6
11.MuskokaMuskoka High Point542Southern Ontario8
14.Parry SoundParry Sound High Point532Southern Ontario6
15.RenfrewRyans Mountain523Southern Ontario12
16.WellingtonLuther Benchmark511Southern Ontario10
17.Sudbury CityWolf Lake Mountain504Northern Ontario7
18.Lennox and AddingtonMoger Pond Peak501Southern Ontario6
19.PeelPeel High Point494Southern Ontario9
20.CochraneGhost Range Peak488Northern Ontario9
21.WaterlooWaterloo High Point438Southern Ontario9
22.PeterboroughPeterborough County High Point434Southern Ontario8
23.PerthPerth County High Point427Southern Ontario10
24.FrontenacEvergreen Mountain417Southern Ontario8
25.HaltonHalton High Point414Southern Ontario17
26.DurhamDurham High Point410Southern Ontario10
27.BruceBruce County High Point403Southern Ontario7
28.HuronHuron County High Point397Southern Ontario7
28.Kawartha LakesKawartha Lakes High Point397Southern Ontario12
30.OxfordOxford County High Point391Southern Ontario13
31.LanarkWhite Mountain386Southern Ontario9
32.YorkYork High Point379Southern Ontario13
33.NorthumberlandNorthumberland County High Point356Southern Ontario7
34.ManitoulinCup and Saucer352Southern Ontario26
35.MiddlesexMiddlesex County High Point342Southern Ontario12
36.HamiltonHamilton High Point330Southern Ontario8
37.BrantBrant County High Point327Southern Ontario5
38.ElginElgin County High Point296Southern Ontario7
39.NorfolkNorfolk County High Point278Southern Ontario6
40.BrantfordBrantford High Point267Southern Ontario11
41.LambtonLambton County High Point264Southern Ontario10
42.NiagaraNiagara High Point259Southern Ontario20
43.Chatham-KentChatham-Kent High Point233Southern Ontario7
44.HaldimandHaldimand County High Point231Southern Ontario7
45.EssexEssex County High Point228Southern Ontario5
46.Leeds and GrenvilleLeeds and Grenville High Point212Southern Ontario8
46.TorontoToronto High Point212Southern Ontario28
48.OttawaOttawa High Point166Southern Ontario11
49.Prince EdwardEast Picton Bay Hill155Southern Ontario13
50.Stormont, Dundas and GlengarryStormont-Dundas-Glengarry High Point125Southern Ontario9
51.Prescott and RussellVankleek Hill123Southern Ontario20

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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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