Baum Lake is in great shape, there are a ton of fish, midges and Baetis are coming off daily and I don't know why I'm still in the shop typing this. Zebras in brown and black, sizes #16 - 20, stripped or under an indicator are good strategies. Sweet Peas, under an indicator, or Jigged Quills in silver or copper, will work too. Balanced Leeches, Crystal Buggers, these are go-to's on this lake. Bring all of your smaller Adams and Parachute Adams, you should get a chance to cast over some noses here. Our guides have this place wired if you are looking for some tactical advice on fishing a great spring creek fishery with an expert! 

Hot Flies:  
Dry Flies:
Adams - #18-20, Hackle Winged May - BWO, Harrop's Last Chance - All, Griffith's Gnat, Mercer's Missing Link - #14-18, Light Cahill - #18 

Nymphs/Wet Flies:
Red Copper John - #18, Ultra Scuds, GB Flashback PT - #14-20, Black A.P. - #14-16, Beaded Zebra Midge - #18-20, Mercer's Gidget, Mercer's CB Micro Mays - Ruby Red #16-18, GB Flashback PT - Olive #18, Beaded Zebra Midge - #16-20, Chromie - #18 

Steamers & Leeches:
JGF Translucent Wiggle Tail - #10, Beaded Micro Buggers - #12, Zack's Damseleech - #14