Ku sii wad qodobkan - Iyada oo la soo bandhigay qaababka hoose ee kooxda ee 1993 daadadka
, dhammaan Kooxda Council Grove Group, laga bilaabo hillcrest Speiser Shale ilaa ilaa balli-sare Americus, ayaa loo soo bandhigay daraasad sare ilaa hoose ee Tuttle Creek Lake Spillway.