i got them from the aqueduct that runs through Hesperia here in southern California. about 5 miles before it dumps into lake silverwood. ive seen Tules in there since (to 4") but never any Sac's. up above about 60 miles, theres a split and it empties into Quail lake. where the only perch are tules. so comming from the same water source, id say Tule.