Sesekinika Lake

Where Sesekinika Lake is

Sesekinika Lake lies in the District of Timiskaming.

How deep is Sesekinika Lake?

Sesekinika Lake reaches a maximum recorded depth of 10.7 meters, determined from 46,408 soundings.

Surveyed Depths

Ontario has surveyed the depths of several thousand of its lakes over more than half a century. Later surveys were conducted by boat with satellite positioning and produced hundreds of thousands of soundings per lake. Earlier surveys were charted by running transects across the water and drawing depth contours by hand.

Water quality

Ontario’s Lake Partner Program is a volunteer monitoring network. Participants collect a water sample each spring for phosphorus analysis and measure water clarity through the summer with a Secchi disk.

Phosphorus is the nutrient that controls how much algae a lake can grow. A lake with little phosphorus stays clear and supports cold-water fish such as lake trout. As phosphorus rises, algae increase, the water clouds, and oxygen in the deep water falls as the algae decay. The province classifies each monitoring site by its spring phosphorus. Below 10 micrograms per litre is oligotrophic: clear water and low algae. From 10 to 20 is mesotrophic: moderately productive water, with more algae and weed growth than an oligotrophic lake but rarely a bloom. Above 20 is eutrophic: nutrient-rich water, prone to algal blooms and low oxygen at depth.

A Secchi disk is a 20 centimeter white or black-and-white plate lowered on a marked line until it disappears from view. The depth at which it vanishes is the Secchi depth, a direct measure of water clarity. Clearer water gives a deeper reading.

Sesekinika Lake has 10 Lake Partner monitoring sites. Six have reported phosphorus for the three or more years the province requires before a status is assigned. All are classified mesotrophic.

The longest record is held by site 4875/7 at Mid lake, deep spot, sampled over 9 springs to 2025. Its long-term mean phosphorus concentration is 15.74 micrograms per litre, within the mesotrophic band, which runs from 10 to 20. The site’s 5 clarity readings give a median Secchi depth of 1.2 meters.

Fish in Sesekinika Lake

Ontario’s aquatic resource records name 7 fish species in Sesekinika Lake. The province classes the lake as cool water. The record took effect on 17 January 2018, and it compiles what field biologists had reported by then. The province’s other records for the lake name one further species, brook trout. It appears in the records below.

Six of the eight species in the province’s records

• Lake Whitefishtrout and whitefish
• Northern Pikepike
• Walleyeperch
• Yellow Perchperch
• Smallmouth Basssunfish
• Burbotcod

Stocking history

Ontario’s stocking records for Sesekinika Lake run from 1947 to 2000 and hold 9 releases. Walleye account for most of the fish: 575,276 released in five of the years between 1947 and 1967. The last recorded release was 100 brook trout subadults in 2000.

The province’s current stocking programme, recorded from 2016, lists no release into Sesekinika Lake.

Eating the fish

The 2025 Guide to Eating Ontario Fish carries consumption advice for two species taken from Sesekinika Lake, tested for contaminants at a sampling location in Maisonville Twp., Timiskaming Dist. Each figure below is the most meals a month the guide advises for a fish of that length. The advice falls as the fish gets longer, because mercury accumulates over a fish’s life. A zero means the guide advises no meals of that fish at that size.

General population adultsSensitive population children under fifteen, women who are or may become pregnant

Fisheries Management Zone 8

Sesekinika Lake lies in Fisheries Management Zone 8. Ontario sets its fishing seasons and catch limits by zone.

The figures are the number of fish an angler may catch and keep in a day and have in possession, under a sport fishing licence and under a conservation licence. The rows are the whole zone’s, and they apply to every lake in it. No waterbody exception names Sesekinika Lake.

Islands and names

Sesekinika Lake contains 27 islands in the Ontario Hydro Network’s outline, three of them over 10 hectares and ten under a tenth of a hectare.

Official names

Ontario’s geographic names register lists 4 official names on the water and its islands: 4 islands. The register records the origin of one name: Butte Island, “Unknown.”

Nearby lakes

• Kenogami Lake8 km away
• Watabeag Lake24 km away
• Mistinikon Lake44 km away
• Larder Lake45 km away

All lakes

Questions about Sesekinika Lake

• How deep is Sesekinika Lake?

  Its maximum recorded depth is 10.7 meters.

• How big is Sesekinika Lake?

  Its surface covers 6.5 square kilometers and it holds 27 islands. Of its 42 kilometers of shoreline, 22 kilometers is the mainland shore and 20 kilometers is the shore of the islands.

• What fish are in Sesekinika Lake?

  Ontario’s aquatic resource records name seven species, among them walleye, smallmouth bass, northern pike, lake whitefish and yellow perch. The lake’s spawning, consumption and stocking records also name brook trout.

• Is the water clear?

  All six monitoring sites with a phosphorus status are classified mesotrophic, the middle of the province’s three bands.