DGIF's has a team of biologists who continually monitor the our areas creeks and rivers. It is funded nearly entirely by licensing fees for fishing and hunting, and grants.
DGIF's biologist in our area is John Odenkirk. I have taken several trips with him to learn about his efforts to study and monitor the Potomac's Snakehead population which originated in Dogue Creek and Little Hunting Creek. Here's some of my prior posts:
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