What Water Temperature Do Rainbow Trout Spawn

If the water temperature continues to rise and gets in the 75 to 77 degree range for an extended period it can be lethal for Rainbow and Brown Trout.

What water temperature do rainbow trout spawn. At approximately 3 years of age they will move into larger water lakes rivers. Mean daily surface water temperature at Norns reek Fan from January to September for the years 2000 to 2016 with the range of spawning and emergence dates. Migration begins when the rivers warm to between 44F and 50F7C to 10C which is shy of their ideal temperature range of 55F to 60F127C to 157C.

The Rainbow Trout eggs hatch between 3 weeks to 4 months depending on the water temperature. Spawning times can be quite variable and are dependent on water temperaturethey can spawn as early as January in warm areas such as California or as late as June in colder areas. Moreover they will usually prefer shallow rivers with solid gravel bottoms.

Rainbows not steelhead mind you are usually sexually mature between the ages of two and four. During the first two or three years of life rainbow trout will feed mainly on crustaceans plant material and aquatic insects. Runoff often hits a few weeks after the spawn is complete.

Extensive research and observations indicate that adult lake rainbow trout prefer. They are also partial to areas that have bedrock or spring creeks. 2019-05-14 Rainbow and Cutthroat Trout spawn every spring anywhere from February to May.

They generally will not come out unless the temperature is at 42 to 44 F. Spawning can continue through the month of June. In tailwater fisheries where the water temperatures see little variance below the dam the spawn can even cycle out of season at random.

Rainbows can begin spawning as early as February in some rivers and streams and by March or April theyre generally in full spawn when water temperatures have topped 41 degrees or so. There is a possibility of finding some rainbow trout in water bodies having temperatures between 20-23 C depending on the month and period in terms of spawning. If for some reason water temperatures rise above 55.