Each tank should have adequate protection enabling the water surface to rise above the designed height and to flow beyond the shores. Wody zbiorników naturalnych po przekroczeniu regulowanej za pomocą jazu wysokości spływają zwykle do kanałów lub innych powierzchniowych ujęć wody. In the event of an overflow, the water in the artificial tanks flows into specially made pipes. It is required to establish such conductor cross-sections, to ensure that excess water is drained from a violent storm. The edge of the overflow pipes should be placed at the level of the designed water table. The wires are open (they don't have a valve) and are connected to the sewage or rainfall sewage system. Line inlets should be protected against the ingress of various contaminants floating on the water. Siphons are most often used as such protection. The inlet of the overflow pipe can be placed in the middle of the tank, most often, however, it is placed in a wall that serves as a shore reinforcement.
Garden tanks, in which baths of the wading type are envisaged, should be properly adapted for this purpose. The water depth in the coastal part should not exceed several centimeters, and the fall of the bottom should be gentle. The surface of the bottom and the elements forming the shore reinforcement should be as smooth as possible. The surface of the coastal area should be sufficiently smooth, hard, strengthened or grassy, with a permeable substrate. For hygienic reasons, bathing in small tanks in standing water should be limited. To play with water and in the water, it is better to build special paddling pools,where the water is in constant motion, it not only provides better hygiene conditions, but also greater fun.
At large reservoirs intended for water sports, like for example. canoeing, it is necessary to build appropriate platforms or adapt the bank reinforcement for this purpose. Suitable rooms must be built near the tank to store the equipment.