SPINNERDAM - AN OVERVIEW

Subzero temperature had remaining ice two feet thick around the Niobrara River upriver in the dam. Then came a thaw, rising flows to the river threefold, followed by a storm that was a “bomb cyclone,” with 2 inches of rain, followed by snow and blinding winds.Jurisdictional top of the dam, as determined by DSOD, could be the vertical length cal