First page Back Continue Last page Overview Graphics
Capacity of an Anaerobic Lagoon
Heavy rainfall factoras a minimum must be equal to or greater than the depth of a 25-year, 24-hour storm on the lagoon surface to allow for excessive prolonged rainfall periods.
Freeboardthe required distance from the top of the lagoon dam or dike elevation (at its lowest point) to the highest allowed waste liquid elevation (at least 1 foot). This distance is in addition to the 25-year, 24-hour storm and the heavy rainfall factor.