Saskatchewan Restricted Activity Timing Windows for the Protection of Fish and Fish Habitat

Restricted activity timing windows have been identified for Saskatchewan lakes, rivers and streams to protect fish during spawning and incubation periods when spawning fish, eggs and fry are vulnerable to disturbance or sediment. Restricted activity periods are determined on a case by case basis according to the species of fish in the water body, whether those fish spawn in the spring or fall/winter, and whether the water body is located in Northern, Central, or Southern Saskatchewan.

Figure 1: Northern, Central, and Southern Saskatchewan boundaries for Restricted Activity Timing Windows. 
(Note: Central Region includes the Churchill River).
Regional Map

How To Determine Timing Windows

  1. Determine the fish species living in the water body where you wish to do work.
  2. Determine if the fish living in the water body spawn in the spring or fall/winter according to Table 1. There may be one or both spawning types in any given water body. In Saskatchewan, essentially all lakes and streams contain one or more of the spring spawning fish listed, however far fewer contain fall/winter spawning fish.
  3. Determine if the water body is located in Northern, Central, or Southern Saskatchewan according to Figure 1.
  4. Use Table 2 to determine the in-water work timing restrictions according to the location of a water body (Northern, Central or Southern) and the type of fish found within (spring or fall spawners). During these periods work should be avoided.
Table 1: Common spring and fall/winter spawning fish.
Spring Spawning Fish Fall/Winter Spawning Fish
Arctic Grayling
Bullhead
Goldeye
Lake Sturgeon
Mooneye
Northern Pike
Rainbow Trout
Sauger
Smallmouth Bass
Suckers
Walleye
Yellow Perch
Brook Trout
Brown Trout
Burbot (winter)
Cisco (Tullibee)
Lake Trout
Whitefish


Table 2a: Timing windows when work should be avoided in order to protect spawning fish and developing eggs and fry.
Spring Spawning Fish
Location No Lake
Sturgeon
Lake Sturgeon
present
Northern Saskatchewan May 1 to July 15 May 1 to July 31
Central Saskatchewan April 16 to June 30 April 16 to July 15
Southern Saskatchewan April 1 to May 31 April 1 to July 15


Table 2b: Timing windows when work should be avoided in order to protect spawning fish and developing eggs and fry.
Fall/Winter Spawning Fish
Location No Lake Trout Lake Trout
present
Northern Saskatchewan October 1 to July 15 September 1 to July 15
Central Saskatchewan October 1 to June 30 September 15 to June 30
Southern Saskatchewan October 1 to May 31 Not Applicable