Geography of Ottawa

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This is the outline of the geography of the city of Ottawa, the capital of Canada. Ottawa's current borders were formed in 2001, when the former city of Ottawa amalgamated with the ten other municipalities within the former Regional Municipality of Ottawa-Carleton. Ottawa is now a single-tiered Census division, home to 870,250 people.

The city centre is located at the confluence of the Ottawa and Rideau Rivers. The Ottawa River forms the entire northern boundary of the city which it shares with the province of Quebec's municipalities of Pontiac and Gatineau. The northern boundary begins in the west at Arnprior and continues east to Rockland. The boundary then turns south in a straight line, separating the former Township of Cumberland (now in Ottawa) and the City of Clarence-Rockland. It then turns west in another straight line separating the former Township of Cumberland with the municipalities of The Nation and Russell. It then turns south separating Russell from the former Township of Osgoode (now in Ottawa). That boundary runs south in a straight line, then turns west separating Osgoode from the municipality of North Dundas. That boundary runs west in a straight line before turning north separating Osgoode from the municipality of North Grenville. This is another straight line, running north until the Rideau River near Kemptville. The boundary follows the River upstream until almost reaching Merrickville. The boundary then runs in a northwest direction in a straight line with a number of jogs. It separates the municipalities of Montague, Beckwith and Mississippi Mills from the former townships of Marlborough, Goulbourn, Huntley and Fitzroy.

Former townships[edit]

What is now Ottawa was once divided geographically into 11 townships. Ten of them in the former Carleton and one (Cumberland) in the former Russell County. The ten townships of Carleton were Fitzroy, Gloucester, Goulbourn, Huntley, March, Marlborough, Nepean, North Gower, Osgoode and Torbolton.

Physical geography[edit]

The highest point in the city is 166 m (545 ft) above sea level, and is located 2.6 km SSE of Manion Corners (45° 14' 5" N; 76° 3' 3" W). [1] The lowest point in the city is the Ottawa River, at 44m above sea level.

Highest points by ward[edit]

Map of Ottawa showing urban area, highways, waterways, and historic townships
Ward Highest point Elevation (approx.)
West Carleton-March Ward 2.6 km SSE of Manion Corners 166m
Rideau-Goulbourn Ward Jinkinson Road, 8 km N of Munster 153m
Kanata South Ward Glen Cairn Reservoir 131m
College Ward Khymer Ct, 1 km N of Fallowfield 129m
Stittsville Ward Rockson Cres. 128m
Kanata North Ward Huntsville Dr, Kanata Lakes 126m
Osgoode Ward 1 km SE of Bank Street & Rideau Road, South Gloucester 120m+
Cumberland Ward Cumberland Ridge Dr, Quigley Hill 120m+
Barrhaven Ward Cedarview Road, Cedar Hill Estates 120m+
Gloucester-Southgate Ward Tom Roberts Ave, Macdonald-Cartier International Airport 119m
Knoxdale-Merivale Ward Cedarview Road at Cedarhill Drive 115m+
River Ward Carlington Hill, (Carlington Heights Reservoir, Carlington Park) Carlington 115m+
Bay Ward Corkstown Road, Ottawa - Nepean Tent & Trailer Park 114m
Gloucester-South Nepean Ward Osgoode Link Pathway (former CPR) & High Rd, 4 km SW of Leitrim 114m
Innes Ward 200m WSW of Forest Ridge Pumping Station 114m
Beacon Hill-Cyrville Ward Quarry Park, Rothwell Heights 113m
Rideau-Rockcliffe Ward Foxview Pleasant, Quarries 106m
Alta Vista Ward Alta Vista (Alta Vista Drive & Randall Ave) 102m
Capital Ward Bank Street & Alta Vista Drive 96m
Orleans Ward Clearcrest Cres, Fallingbrook 93m
Kitchissippi Ward Maitland Avenue Bridge (over the Queensway) 89m
Somerset Ward Parliament Hill 86m
Rideau-Vanier Ward Richelieu Park, Vanier 75m+

Geology of Ottawa[edit]

Many features of geologic interest are found in and surrounding Ottawa. [1]

Site Feature
W. Erskine Johnston Elementary School Glacially sculpted Precambrian gneiss that displays foliation, folds and cross-cutting dykes
Centrum parking lot Nepean and March Formations sandstone and dolostone
Stony Swamp Conservation Area Sedimentary structures in Paleozoic strata
Champlain Bridge Stromatolite fossils in plan view
Westboro Beach Stromatolites, orthocones and trace fossils
OC Transitway at Roosevelt Ave Stromatolite fossils in cross-section
Tunney's Pasture Gloucester Fault in cross-section
Geological Survey of Canada, 601 Booth St. Fossiliferous limestone
Hog's Back Falls Ordovician sedimentary rocks and the Gloucester Fault
Mer Bleue Bog Boreal peatland
Lemieux Landslide Leda Clay landslide, 1993
Parc Brébeuf, Gatineau Fossiliferous limestone bedrock and glacial erratics
Victoria Island Dune bedforms and fossiliferous limestone
Champlain Lookout, Gatineau Park Precambrian bedrock and Eardley Fault escarpment
Cantley quarry, Québec Outcrops of Precambrian marble shaped in part by sub-glacial hydraulic scouring
Lac des Fées Trail, Gatineau Park Limestones from a depositional environment of shallowing water depths
Lady Grey Dr. behind Royal Canadian Mint Limestones from a depositional environment of episodic storms
Parc du Lac Beauchamp, Québec Precambrian-Cambrian contact exposed
Pinhey's Point Sandstone, limestone and glacial erratics at an historic homestead
Petrie Island Modern shoreline processes and the geology of imported blocks
Metcalfe Geoheritage Park, Almonte An assemblege of rocks that are representative of regional geology
Burnt Lands Alvar, Almonte Barren limestone plain that hosts rare vegetation
Outcrop along HWY 307, near Cantley Gneiss exhibiting folding, faulting, partial melting and intrusion by dykes
Building Stones and Monuments of Downtown Ottawa
Pinhey Sand Dunes
Cardinal Creek Karst

Rivers and creeks[edit]

Tributaries of the Ottawa River (from east to west)
The Rideau River is one of the two main rivers in Ottawa
Tributaries of the Rideau River (from north to south)

Features of the Ottawa River[edit]

(from East to West)

Features of the Rideau River[edit]

(from North to South)


Other geographical features[edit]

Mer Bleue bog



  1. ^ "Ottawa-Gatineau Geoheritage". Retrieved 2018-10-04.

External links[edit]