The eastern boundary of the Louisiana purchase was the Mississippi River, from its source to the 31st parallel, though the source of the Mississippi was, at the time, unknown. The eastern boundary below the 31st parallel was unclear.
An A-frame pool ladder is a great above ground pool ladder designed for stability and safety that is perfect for above ground swimming pools Pool owners with small children can provide an extra layer of safety with the fold up mechanism or locking gate.
1 Bring the pool water to normal level. 2  Fill a 5-gallon bucket with pool water to about two-thirds from the top. 3  Place the bucket on the first or second step of the pool. 4  Ensure the bucket is immersed in the pool at least five inches. 5  Mark the water level inside the bucket.