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Ontario County High Points

Showing Caj Svensson's first ascent dates for climbed peaks (0 out of 51, or 0%)

RankCountyPeak Elev-M Range (Level 4)Ascent Date
 Sudbury DistrictIshpatina Ridge693Northern Ontario 
 Thunder BayTower Mountain679Northern Ontario 
 TimiskamingIshpatina Ridge North677Northern Ontario 
 AlgomaOgidaki Mountain665Northern Ontario 
 NipissingSouthern Ontario High Point578Southern Ontario 
 HaliburtonManitou Mountain563Southern Ontario 
 KenoraKenora District High Point559Northern Ontario 
 SimcoeNiagara Escarpment High Point544Southern Ontario 
 Rainy RiverRainy River District High Point544Northern Ontario 
 GreyGrey County High Point544Southern Ontario 
 MuskokaMuskoka High Point542Southern Ontario 
 DufferinDufferin County High Point542Southern Ontario 
 HastingsHastings County High Point542Southern Ontario 
 Parry SoundParry Sound High Point532Southern Ontario 
 RenfrewRyans Mountain523Southern Ontario 
 WellingtonLuther Benchmark511Southern Ontario 
 Sudbury CityWolf Lake Mountain504Northern Ontario 
 Lennox and AddingtonMoger Pond Peak501Southern Ontario 
 PeelPeel High Point494Southern Ontario 
 CochraneGhost Range Peak488Northern Ontario 
 WaterlooWaterloo High Point438Southern Ontario 
 PeterboroughPeterborough County High Point434Southern Ontario 
 PerthPerth County High Point427Southern Ontario 
 FrontenacEvergreen Mountain417Southern Ontario 
 HaltonHalton High Point414Southern Ontario 
 DurhamDurham High Point410Southern Ontario 
 BruceBruce County High Point403Southern Ontario 
 Kawartha LakesKawartha Lakes High Point397Southern Ontario 
 HuronHuron County High Point397Southern Ontario 
 OxfordOxford County High Point391Southern Ontario 
 LanarkWhite Mountain386Southern Ontario 
 YorkYork High Point379Southern Ontario 
 NorthumberlandNorthumberland County High Point356Southern Ontario 
 ManitoulinCup and Saucer352Southern Ontario 
 MiddlesexMiddlesex County High Point342Southern Ontario 
 HamiltonHamilton High Point330Southern Ontario 
 BrantBrant County High Point327Southern Ontario 
 ElginElgin County High Point296Southern Ontario 
 NorfolkNorfolk County High Point278Southern Ontario 
 BrantfordBrantford High Point267Southern Ontario 
 LambtonLambton County High Point264Southern Ontario 
 NiagaraNiagara High Point259Southern Ontario 
 Chatham-KentChatham-Kent High Point233Southern Ontario 
 HaldimandHaldimand County High Point231Southern Ontario 
 EssexEssex County High Point228Southern Ontario 
 TorontoToronto High Point212Southern Ontario 
 Leeds and GrenvilleLeeds and Grenville High Point212Southern Ontario 
 OttawaOttawa High Point166Southern Ontario 
 Prince EdwardEast Picton Bay Hill155Southern Ontario 
 Stormont, Dundas and GlengarryStormont-Dundas-Glengarry High Point125Southern Ontario 
 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.


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.


     Ontario Basic Mapping


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