The airport maintains the necessary equipment ready to salvage in a short time any aircraft that crashes into the lake, as required by International Civil Aviation Organization regulations.

The remaining 10% comes from ground water wells, which are maintained as a backup in case the lake becomes contaminated.

On 18 March 2010, a DHL Antonov An-26 aircraft made an emergency landing on the ice of the lake, leaking about 1 ton of fuel.

[2] Administratively, Lake Ülemiste is part of Tallinn's central district Kesklinn, and constitutes Ülemistejärve subdistrict with its neighbouring forests.

In Estonian mythology, it is believed to be one of the boulders Linda was supposed to carry to Kalev's grave at Toompea, but which fell off her apron.