Lakelse River

Lakelse River
Copper River
Mouth of the Lakelse River
Location
CountryCanada
ProvinceBritish Columbia
DistrictRange 5 Coast Land District
Physical characteristics
SourceLakelse Lake
  locationKitimat Ranges
  coordinates54°22′41″N 128°33′36″W / 54.37806°N 128.56000°W / 54.37806; -128.56000
  elevation76 m (249 ft)
MouthSkeena River
  location
Southwest of Terrace, British Columbia
  coordinates
54°26′33″N 128°46′52″W / 54.44250°N 128.78111°W / 54.44250; -128.78111
  elevation
43 m (141 ft)
Length24 km (15 mi)
Basin size583 km2 (225 sq mi),
Discharge 
  average27.5 m3/s (970 cu ft/s)
Basin features
Tributaries 
  leftColdwater Creek, White Creek
  rightHerman Creek
Topo mapNTS103I7 Lakelse Lake

The Lakelse River (la-KELS) is a tributary of the Skeena River in northwestern part of the province of British Columbia, Canada. From its source in Lakelse Lake, in the Kitimat Ranges of the Coast Mountains, the Lakelse River flows northwest for about 24 km (15 mi) to empty into the Skeena River about 12 km (7.5 mi) southwest of Terrace, British Columbia.

The Lakelse River's drainage basin covers 583 km2 (225 sq mi). The river's mean annual discharge is estimated at 27.5 m3/s (970 cu ft/s). The Lakelse watershed's land cover is classified as 53.5% conifer forest, 12.9% shrubland, 11.8 barren, and small amounts of other cover. The mouth of the Lakelse River is located about 12 km (7.5 mi) southwest of Terrace, British Columbia, about 45 km (28 mi) north of Kitimat, about 100 km (62 mi) east of Prince Rupert, British Columbia, and about 395 km (245 mi) west of Prince George, British Columbia.

The Lakelse River watershed lies within the traditional territory of the Tsimshian Kitselas people. As of 2025 the Kitselas First Nation and the Kitsumkalum First Nation are in the process of finalizing a treaty with the government of British Columbia. By the terms of the treaty agreement the Kitselas will receive several land parcels in the Lakelse watershed.

The name "Lakelse" comes from a Tsimshianic word meaning "fresh water mussel".