y ▁Mountains ▁National ▁Park . ▁It ▁is ▁also ▁imp ounded ▁by ▁Che o ah ▁Dam ▁in ▁North ▁Carolina , ▁and ▁by ▁Cal der wood ▁and ▁Ch il how ee ▁d ams ▁in ▁Tennessee . ▁The ▁res er voir s ▁provide ▁flo od ▁control ▁and ▁hydro elect ric ▁power . ▁ ▁Cal der wood ▁and ▁Che o ah ▁d ams ▁di vert ▁water ▁through ▁short ▁t unn els ▁slightly ▁down stream ▁of ▁the ▁d ams ▁themselves ▁to ▁hydro elect ric ▁gener ators . ▁ ▁Ch il how ee ▁has ▁power ▁gener ators ▁built ▁straight ▁into ▁the ▁dam ▁itself . ▁ ▁Some ▁water ▁is ▁also ▁di vert ed ▁from ▁the ▁nearby ▁S ante et lah ▁Dam ▁on ▁the ▁Che o ah ▁River ▁to ▁power ▁another ▁hydro elect ric ▁generator ▁at ▁the ▁S ante et lah ▁Power house . ▁ ▁This ▁water ▁is ▁brought ▁to ▁the ▁Little ▁Tennessee ▁River ▁through ▁ ▁of ▁t unn els ▁through ▁the ▁Great ▁Sm ok y ▁Mountains . ▁ ▁Ch il how ee , ▁Cal der wood , ▁and ▁Che o ah ▁D ams ▁and ▁the ▁S ante et lah ▁Power house ▁were ▁originally ▁built ▁by ▁Al co a ▁to ▁power ▁the ▁al umin um ▁plant ▁at ▁Al co a , ▁Tennessee . ▁ ▁To ▁ensure ▁efficiency ▁in ▁operation , ▁Al co a ▁coordinates ▁the ▁operation ▁of ▁its ▁hydro ▁system ▁with ▁TV A , ▁making ▁sure ▁that ▁res er voir ▁and ▁river ▁water ▁levels ▁are ▁safe ▁for ▁recre ational ▁use ▁( prim arily ▁bo ating ▁and ▁fish ing ) ▁and ▁that