[2] Willows and cottonwoods (likely native) grew around the lake, and other ferns and flowers were later delivered by train and added to the landscape.

[7] The San Bernardino Valley Traction Co. ran a trolley line out to the springs, and a separate (but associated) company developed the bathhouse and surrounding parkland.

[8] The lake may have been created or significantly expanded on the "low land to the south of the present bathhouse" in 1901 when the site was purchased by A. C. Denman Jr.[9] Urbita Springs was ultimately developed into a 15-acre (6.1 ha; 650,000 sq ft) amusement park oriented toward working-class families.

[12] Operated for a time by the Pacific Electric streetcar company, and home to the Urbita Lake Railway, the site was renamed Pickering Park in 1924.

[2] In the 1980s, after "a succession of unusually wet winters and intentional replenishing of the water supply overloaded the underground basin," springs and underground water began emerging in places in San Bernardino where it was unexpected and unwanted, including in basements, movie theaters, and in an elevator shaft at San Bernardino City Hall.

The warmest well yields about 200 US gallons (760 L; 170 imp gal) a minute of mildly sulphureted water that is said to have a temperature of 106 °F (41 °C).