River
Assiniboine River
1,275 km from source to mouth · Canada.
CanadaFlows into Red River of the North7th longest in Canada
In numbers
Length
1,275km
Average flow
45m³/s
Basin
100,000km²
Drop
387m
from 613 m to 226 m
Country
1
The journey
From source to mouth
1,275 km of river and 26 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 613 m
- 0 kmWindy Lake2.1 km²
- 28 kmShutte Lake0.4 km²
- 61 kmLybeck Lake0.6 km²
- 71 kmLoch Lomond3.1 km²
- 73 kmAnnie Laurie Lake1.2 km²
- 100 kmMay Lake0.7 km²
- 107 kmGibney Lake0.9 km²
- 112 kmCrystal Lake0.5 km²
- 225 kmWhitesand Rivertributary
- 350 kmShell Rivertributary
- 352 kmShellmouth Reservoir52 km²
- 451 kmQu'Appelle Rivertributary
- 540 kmBacons Lagoon0.5 km²
- 669 kmLittle Saskatchewan Rivertributary
- 686 kmBrandon48,859 people
- 749 kmSouris Rivertributary
- 1,010 kmPortage Reservoir2.0 km²
- 1,010 kmCrescent Lake1.3 km²
- 1,012 kmPortage la Prairie13,304 people
- 1,176 kmSt. James-Assiniboia East27,755 people
- 1,179 kmSt. James Bridge
- 1,183 kmMaryland Bridge
- 1,188 kmForks Historic Rail Bridge
- 1,188 kmMain St. Bridge
- 1,190 kmWinnipeg749,607 people
- 1,190 kmDowntown Winnipeg66,850 people
- 1,275 kmRed River of the Northat 226 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Saskatchewan and Manitoba, Canada
At the mouth it carries 45 m³/s on average: an Olympic pool every 56 seconds. It drops from 613 m to 226 m, 0.3 m per kilometre on average. Its basin covers 100,000 km², about the size of KR. 1.8 million people live in it. Highest water: from June to July; lowest: from December to March. It is heavily dammed: reservoirs can hold 104% of a year's flow.
Where to start
- WinnipegLargest city on its banks · 749,607 people
- Winnipeg / James Armstrong Richardson International Airport (YWG)Nearest airport with scheduled flights, 7 km from the cityCar hire at YWG airport (Winnipeg)Discover Cars · Affiliate link↗
- On the water5 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe19 put-ins and rapids mapped (OpenStreetMap)
- From June to AugustThe best months to visit
Assiniboine River, month by month
Highest water: from June to July
Lowest water: from December to March. Freezing months (average below −4 °C): from November to March. Best months to visit: from June to August.
From about 210 m³/s in the lowest month to 300 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The basin
Assiniboine River: the basin in numbers
259,240 km² of land send their water to this river. This is what lives on it.
- 1.8millionpeople live in the basin
- 7/km²people per km²
- 468maverage altitude of the basin
- 463mmof rain a year (basin average)
- 3.0°Caverage air temperature
- 8%protected areas
- 1.8%covered by lakes
- 8.1km³held in reservoirs
What covers the basin
- 11% Forest
- 67% Cropland
- 12% Pasture
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
Along the river
Assiniboine River: what you find on the way
- 19Rapids
- 1Boat rampsLouise Bridge Boat Launch
- 2Ferry piersStockton Ferry (Eastbound), Stockton Ferry (Westbound)
- 2Marinaspritchard docs abandoned
- 5River beachesAssiniboine Flats, Adams Flats, Carie Flats and 2 more
From OpenStreetMap, within 2.6 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Assiniboine River in our other atlases
What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.
12lakes on its wayLakeyas
Lakes and reservoirs (12)
Lakes it flows through, by Lakeyas
- Windy Lakekm 02.1km²
- Shutte Lakekm 190.4km²
- Loch Lomondkm 463.1km²
- Annie Laurie Lakekm 481.2km²
- Gibney Lakekm 700.9km²
- Crystal Lakekm 730.5km²
- Shellmouth Reservoirkm 23052km²
- Crescent Lakekm 6601.3km²
4 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗
From space
The source and the mouth, seen from orbit
Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Photos
Assiniboine River in pictures
Tributaries
Where it flows, and what flows into it
It flows into
Red River of the NorthCanada890 km260 m³/sTributaries (5)
Also: Little Saskatchewan River, Whitesand River, Shell River
In the same basin
Where these numbers come from
| Name, length, places | Wikidata (Q220503) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Our other atlases | Lakeyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST |
Every source and licence is on the data sources page.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.
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islands
Every island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit 
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Every river from source to sea: the journey, the flow and the basin in numbers.You are here
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Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit