Saint Mary River (Oldman River)

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Saint Mary River
St. Mary River
Saint Mary River above Lower Saint Mary Lake

Saint Mary River above Lower Saint Mary Lake

Data
Water code US :  776125
location Montana ( United States ), Alberta ( Canada ) United StatesUnited States 
CanadaCanada 
River system Nelson River
Drain over Oldman River  → South Saskatchewan River  → Saskatchewan River  → Nelson River  → Hudson Bay
Headwaters SE flank of Gunsight Mountain in the Lewis Range
48 ° 37 ′ 13 ″  N , 113 ° 44 ′ 37 ″  W
Source height approx.  2300  m
muzzle Oldman River Coordinates: 48 ° 54 '11 "  N , 113 ° 19' 3"  W 48 ° 54 '11 "  N , 113 ° 19' 3"  W.
Mouth height 835  m
Height difference approx. 1465 m
Bottom slope approx. 7.3 ‰
length approx. 200 km
Catchment area approx. 3700 km²
Discharge at the gauge near Lethbridge
A Eo : 3340 km²
Location: 13 km above the estuary 		MQ 1911/2000
Mq 1911/2000
 		14.93 m³ / s
4.5 l / (s km²)
Left tributaries Swiftcurrent Creek
Flowing lakes Gunsight Lake, Saint Mary Lake , Lower Saint Mary Lake
Reservoirs flowed through St. Mary Reservoir

The Saint Mary River (short form: St. Mary River ) is an approximately 200 km long right tributary of the Oldman River in Montana (USA) and Alberta (Canada).

The Saint Mary River has its source in the Rocky Mountains in the US American Glacier National Park . Its headwaters are located on the southeast flank of Gunsight Mountain in the Lewis Range . The river flows through Gunsight Lake and Saint Mary Lake within the national park. Then it flows through the Lower Saint Mary Lake , into which the Swiftcurrent Creek flows from the west . Below the lake is a drainage dam on which part of the river water is diverted to the North Fork Milk River , a tributary of the Milk River , for irrigation purposes . The river flows in a predominantly north-northeast direction through the Great Plains . He crosses the border into Canada. 45 km southwest of Lethbridge , the Saint Mary River is dammed to form the 37.5 km² St. Mary Reservoir . Finally, 10 km southwest of Lethbridge, the river flows into the Oldman River, the right source river of the South Saskatchewan River .

A rock formation with dinosaur skeleton finds, the St. Mary River Formation , was named after the river.

Web links

Commons : Saint Mary River  - Collection of Images, Videos and Audio Files

Individual evidence

  1. ↑ Saint Mary River in the Geographic Names Information System of the United States Geological Survey
  2. ↑ Station Code 05AE006, ST. MARY RIVER NEAR LETHBRIDGE . R-ArcticNET. Retrieved September 19, 2017.
  3. ↑ St. Mary / Milk River - 1909 Boundary Waters Treaty . Alberta Environment and Parks. Retrieved September 19, 2017.
  4. ^ Alberta Lakes, St. Mary Reservoir . University of Alberta. Retrieved September 19, 2017.