Share on Google Plus. An illegal u-turn is when an individual performs a u-turn in an unauthorized zone where a sign is posted. Illegal u-turns are considered traffic violations, and individuals who are found guilty of this violation could end up with serious fines and penalties.
AQUAGUIDE POND MANAGEMENT SERIES What is it? Turnover is the gentle, natural mixing of pond and lake waters.It is caused by changing temperatures in surface watersbrought on by the progression of the seasons. In Missouriâscontinental-temperate climate, most ponds and lakes turn overin both the fall and the spring.
Stratification during the summer acts as a deterrent to complete lake mixing. Wind circulates the surface water, but the warm water of the epilimnion is unable to drive through the cold, dense water of the hypolimnion. As a result, the water is only mixed in the epilimnion (Figure 3).