Yeah, you're right ... seems like even the Dept of Conservation doesn't start fishing reports until April, and the guides don't have "reports", just pictures.
Even this site : Lake Levels in Missouri, United States doesn't even list Pool levels, and I couldn't find any site showing current water temps.
You might call these people and see if they give any usable info on the lake :U.S. ARMY CORPS OF ENGINEERS, ST. LOUIS DISTRICT, RIVER & RESERVOIR DAILY REPORT
(PHONE: 800-432-1208)