Questions about NJ trout

[thmyorke1]

From what I understand, the majority of trout in NJ are stocked, and only a few streams (other than some reservoirs and lakes) support natural trout production.

What I don't understand; what happens to these thousands of trout? Are they simply just fished out by anglers or do they just not survive some waters such? Im curious to know what factors influence if the stream is trout-sustainable or not.

One last note- North branch or south branch of the Raritan? And im talking about the convergence area since thats most local for me. From the stocking info it seems like the South Branch is better stocked but it's only stocked on the northern part- up between Spruce Run and RV.

Thanks!