water, and long-term storage credits. Seepage losses are virtually nil, thanks to a system that recaptures virtually all seepage and pumps it back into the lake. A park surrounds the area, along with office and residential highrises such as SouthBank, Grigio, Northshore Condominiums, Onyx Tower Condominiums, Rio West, Plaza Del Rio and Hayden Ferry Lakeside. The lake has fishing and boating (by permit and by day rental which can be purchased at the Tempe Public Library). The lake also hosts a small marina on the northern shore. Tempe Beach Park is home to several major annual events including Tempe's yearly Independence Day Celebrations and the Tempe Music Festival. Fishing Tempe Town Lake is stocked with rainbow trout on a monthly basis from November to February. Other species found in the lake naturally include largemouth bass, yellow bass, tilapia, carp, channel catfish and bluegill. An Arizona fishing license is required to fish in the lake. All motor vehicles are required to have a four stroke marine engine. Emergency warning system To keep users of the lake safe from flash floods on the river in the mountains upstream of Tempe, high winds, lightning, other severe weather and man-made disasters, an emergency warning system was needed. The system combines weather information, weather sensors, communications equipment, visual warnings, audible warnings, and public education to help lake users assess their personal safety and respond accordingly. The Town Lake emergency warning system (EWS) is based on three scenarios; Watch, Warning, and Evacuation. Each of the three steel towers contains Whelen outdoor warning sirens and strobe beacons used as a warning medium. Under high wind conditions, two white strobes will flash in accordance with wind speed. The higher the wind speed, the faster the flash. If lightning is detected in the area, a sensor automatically activates a amber colored strobe, and in the event of evacuation (i.e. weather, natural disaster, man-made disaster, dam break, or other emergencies), the sirens roar in the steady "alert" tone and the red strobe is activated. Both remain active until the lake is re-opened. Each of the towers is powered by DC voltage, through a series of attached solar panels. The system has been in operation since November 1999 and has successfully kept the lake safe during monsoon season and various emergencies, including the 2010 dam break and the 2020 train derailment on a bridge over the lake. Dam The prior dams