When are some good times of year to go up the creeks and rivers that feed local DFW lakes and flip and pitch and catch fish? I�m sure there are resident fish that live there year round but when is �prime time� to do this?

You kind of have to find out yourself, not to be sarcastic but some lakes have good fishing �up the river� and some lakes are mud holes.. go out and do some exploring on your home lake. you might find a good population of fish that you�ll have to yourself

When the outside temp is Extreme hot or extreme cold

Never realized there was a bad time to fish that way.

With several lakes being low it's more about actually getting in the river (if you're in a bass boat) than catching fish. All creeks and rivers hold a good population of resident fish but the bite can be effected by too much or too little current. I fish the river on Hubbard in November and December and hit the power plant lakes in January and February. Once again, water in any river scenario is the key.