The salmon run is triggered by water temperatures and water flows. When the river starts to rise due to rains it can signal the salmon to run up the river . The bigger higher the river gets the more fish will run.
Another answer was salmon are an introduced species in the great lakes and they run up the rivers in the fall. Salmon is the first species to enter the rivers in the fall and they are the largest. The fishing for salmon is usually best from mid-September to late October but once the salmon runs are over anglers switch over to steelhead fishing.
How far do salmon travel up the river?
The run up the river can be exhausting, sometimes requiring the salmon to battle hundreds of miles upstream against strong currents and rapids. They cease feeding during the run. Chinook and sockeye salmon from central Idaho must travel 900 miles (1,400 km) and climb nearly 7,000 feet (2,100 m) before they are ready to spawn.
This is what I learned. on average, it takes salmon two to three weeks to make their way upstream and reach their spawning ground. Of course, the amount of time highly depends on the river system the salmon migrate through. It can take more days if the fish encounter plenty of obstacles on their way up and fewer days if the river current is below average.
Do salmon jump in rivers?
Salmon often jump in rivers to get over obstacles that would otherwise prevent them from continuing their journey upstream. Common obstacles and barriers include dams, waterfalls, and culverts. Other obstacles that salmon may have to jump over include sunken trees, floating logs, and simply rapids.
All salmon are born in rivers streams and all of them return to the same river or stream they were born in to give birth to a new generation of salmon. As they can locate their specific natal spawning grounds, they have to swim upstream to get there.
When does salmon season start in the Sacramento River?
The 384-mile-long Sacramento River is home to seasonal migratory runs of Chinook, or “King,” salmon that draw fishermen in great numbers, especially in the fall. The river’s salmon-fishing season opens July 16 and runs through the end of January.
Salmon will start getting this urge to spawn as early as July on some Ontario rivers and it’s not uncommon to see some salmon run in Ontario in July or August if the conditions are suitable.
The river’s salmon-fishing season opens July 16 and runs through the end of January. Chinook will begin to appear in the upper river in early August, and peak months for their arrival are September, October and November. The largest of the salmon will typically arrive in late November and December.